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angular/adev/src/content/tutorials/first-app/steps/13-search/src/app/housing-location/housing-location.component.css_0_583 | .listing {
background: var(--accent-color);
border-radius: 30px;
padding-bottom: 30px;
}
.listing-heading {
color: var(--primary-color);
padding: 10px 20px 0 20px;
}
.listing-photo {
height: 250px;
width: 100%;
object-fit: cover;
border-radius: 30px 30px 0 0;
}
.listing-location {
padding: 10px 20px 20px 20px;
}
.listing-location::before {
content: url("/assets/location-pin.svg") / "";
}
section.listing a {
padding-left: 20px;
text-decoration: none;
color: var(--primary-color);
}
section.listing a::after {
content: "\203A";
margin-left: 5px;
}
| {
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"start_byte": 0,
"url": "https://github.com/angular/angular/blob/main/adev/src/content/tutorials/first-app/steps/13-search/src/app/housing-location/housing-location.component.css"
} |
angular/adev/src/content/tutorials/first-app/steps/13-search/src/app/housing-location/housing-location.component.ts_0_908 | import {Component, Input} from '@angular/core';
import {CommonModule} from '@angular/common';
import {HousingLocation} from '../housinglocation';
import {RouterModule} from '@angular/router';
@Component({
selector: 'app-housing-location',
standalone: true,
imports: [CommonModule, RouterModule],
template: `
<section class="listing">
<img
class="listing-photo"
[src]="housingLocation.photo"
alt="Exterior photo of {{ housingLocation.name }}"
crossorigin
/>
<h2 class="listing-heading">{{ housingLocation.name }}</h2>
<p class="listing-location">{{ housingLocation.city }}, {{ housingLocation.state }}</p>
<a [routerLink]="['/details', housingLocation.id]">Learn More</a>
</section>
`,
styleUrls: ['./housing-location.component.css'],
})
export class HousingLocationComponent {
@Input() housingLocation!: HousingLocation;
}
| {
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} |
angular/adev/src/content/tutorials/first-app/steps/13-search/src/app/details/details.component.ts_0_2657 | import {Component, inject} from '@angular/core';
import {CommonModule} from '@angular/common';
import {ActivatedRoute} from '@angular/router';
import {HousingService} from '../housing.service';
import {HousingLocation} from '../housinglocation';
import {FormControl, FormGroup, ReactiveFormsModule} from '@angular/forms';
@Component({
selector: 'app-details',
standalone: true,
imports: [CommonModule, ReactiveFormsModule],
template: `
<article>
<img
class="listing-photo"
[src]="housingLocation?.photo"
alt="Exterior photo of {{ housingLocation?.name }}"
crossorigin
/>
<section class="listing-description">
<h2 class="listing-heading">{{ housingLocation?.name }}</h2>
<p class="listing-location">{{ housingLocation?.city }}, {{ housingLocation?.state }}</p>
</section>
<section class="listing-features">
<h2 class="section-heading">About this housing location</h2>
<ul>
<li>Units available: {{ housingLocation?.availableUnits }}</li>
<li>Does this location have wifi: {{ housingLocation?.wifi }}</li>
<li>Does this location have laundry: {{ housingLocation?.laundry }}</li>
</ul>
</section>
<section class="listing-apply">
<h2 class="section-heading">Apply now to live here</h2>
<form [formGroup]="applyForm" (submit)="submitApplication()">
<label for="first-name">First Name</label>
<input id="first-name" type="text" formControlName="firstName" />
<label for="last-name">Last Name</label>
<input id="last-name" type="text" formControlName="lastName" />
<label for="email">Email</label>
<input id="email" type="email" formControlName="email" />
<button type="submit" class="primary">Apply now</button>
</form>
</section>
</article>
`,
styleUrls: ['./details.component.css'],
})
export class DetailsComponent {
route: ActivatedRoute = inject(ActivatedRoute);
housingService = inject(HousingService);
housingLocation: HousingLocation | undefined;
applyForm = new FormGroup({
firstName: new FormControl(''),
lastName: new FormControl(''),
email: new FormControl(''),
});
constructor() {
const housingLocationId = parseInt(this.route.snapshot.params['id'], 10);
this.housingLocation = this.housingService.getHousingLocationById(housingLocationId);
}
submitApplication() {
this.housingService.submitApplication(
this.applyForm.value.firstName ?? '',
this.applyForm.value.lastName ?? '',
this.applyForm.value.email ?? '',
);
}
}
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} |
angular/adev/src/content/tutorials/first-app/steps/13-search/src/app/details/details.component.css_0_1075 | .listing-photo {
height: 600px;
width: 50%;
object-fit: cover;
border-radius: 30px;
float: right;
}
.listing-heading {
font-size: 48pt;
font-weight: bold;
margin-bottom: 15px;
}
.listing-location::before {
content: url('/assets/location-pin.svg') / '';
}
.listing-location {
font-size: 24pt;
margin-bottom: 15px;
}
.listing-features > .section-heading {
color: var(--secondary-color);
font-size: 24pt;
margin-bottom: 15px;
}
.listing-features {
margin-bottom: 20px;
}
.listing-features li {
font-size: 14pt;
}
li {
list-style-type: none;
}
.listing-apply .section-heading {
font-size: 18pt;
margin-bottom: 15px;
}
label, input {
display: block;
}
label {
color: var(--secondary-color);
font-weight: bold;
text-transform: uppercase;
font-size: 12pt;
}
input {
font-size: 16pt;
margin-bottom: 15px;
padding: 10px;
width: 400px;
border-top: none;
border-right: none;
border-left: none;
border-bottom: solid .3px;
}
@media (max-width: 1024px) {
.listing-photo {
width: 100%;
height: 400px;
}
}
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"url": "https://github.com/angular/angular/blob/main/adev/src/content/tutorials/first-app/steps/13-search/src/app/details/details.component.css"
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angular/adev/src/content/tutorials/first-app/steps/13-search/src/assets/location-pin.svg_0_502 | <?xml version="1.0" encoding="UTF-8"?>
<svg width="20pt" height="20pt" version="1.1" viewBox="0 0 100 100" xmlns="http://www.w3.org/2000/svg">
<path d="m50 11.602c-15.398 0-27.898 12.5-27.898 27.898 0 5 1.3008 9.6992 3.6016 13.801l2.8984 4.1992 21.398 30.898 21.801-31.398 2.1992-3.1992c2.5-4.1992 3.8984-9 3.8984-14.199 0-15.5-12.5-28-27.898-28zm0 35.598c-4.1992 0-7.6992-3.3984-7.6992-7.6992s3.3984-7.6992 7.6992-7.6992 7.6992 3.3984 7.6992 7.6992-3.5 7.6992-7.6992 7.6992z" fill="#605cc8"/>
</svg>
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} |
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angular/adev/src/content/tutorials/first-app/steps/10-routing/README.md_0_4824 | # Add routes to the application
This tutorial lesson demonstrates how to add routes to your app.
<docs-video src="https://www.youtube.com/embed/r5DEBMuStPw?si=H6Bx6nLJoMLaMxkx" />
IMPORTANT: We recommend using your local environment to learn routing.
## What you'll learn
At the end of this lesson your application will have support for routing.
## Conceptual preview of routing
This tutorial introduces routing in Angular. Routing is the ability to navigate from one component in the application to another. In [Single Page Applications (SPA)](guide/routing), only parts of the page are updated to represent the requested view for the user.
The [Angular Router](guide/routing) enables users to declare routes and specify which component should be displayed on the screen if that route is requested by the application.
In this lesson, you will enable routing in your application to navigate to the details page.
<docs-workflow>
<docs-step title="Create a default details component ">
1. From the terminal, enter the following command to create the `DetailsComponent`:
<docs-code language="shell">
ng generate component details
</docs-code>
This component will represent the details page that provides more information on a given housing location.
</docs-step>
<docs-step title="Add routing to the application">
1. In the `src/app` directory, create a file called `routes.ts`. This file is where we will define the routes in the application.
1. In `main.ts`, make the following updates to enable routing in the application:
1. Import the routes file and the `provideRouter` function:
<docs-code header="Import routing details in src/main.ts" path="adev/src/content/tutorials/first-app/steps/11-details-page/src/main.ts" visibleLines="[7,8]"/>
1. Update the call to `bootstrapApplication` to include the routing configuration:
<docs-code header="Add router configuration in src/main.ts" path="adev/src/content/tutorials/first-app/steps/11-details-page/src/main.ts" visibleLines="[10,17]"/>
1. In `src/app/app.component.ts`, update the component to use routing:
1. Add a file level import for `RoutingModule`:
<docs-code header="Import RouterModule in src/app/app.component.ts" path="adev/src/content/tutorials/first-app/steps/11-details-page/src/app/app.component.ts" visibleLines="[3]"/>
1. Add `RouterModule` to the `@Component` metadata imports
<docs-code header="Import RouterModule in src/app/app.component.ts" path="adev/src/content/tutorials/first-app/steps/11-details-page/src/app/app.component.ts" visibleLines="[7]"/>
1. In the `template` property, replace the `<app-home></app-home>` tag with the `<router-outlet>` directive and add a link back to the home page. Your code should match this code:
<docs-code header="Add router-outlet in src/app/app.component.ts" path="adev/src/content/tutorials/first-app/steps/11-details-page/src/app/app.component.ts" visibleLines="[8,18]"/>
</docs-step>
<docs-step title="Add route to new component">
In the previous step you removed the reference to the `<app-home>` component in the template. In this step, you will add a new route to that component.
1. In `routes.ts`, perform the following updates to create a route.
1. Add a file level imports for the `HomeComponent`, `DetailsComponent` and the `Routes` type that you'll use in the route definitions.
<docs-code header="Import components and Routes" path="adev/src/content/tutorials/first-app/steps/11-details-page/src/app/routes.ts" visibleLines="[1,3]"/>
1. Define a variable called `routeConfig` of type `Routes` and define two routes for the app:
<docs-code header="Add routes to the app" path="adev/src/content/tutorials/first-app/steps/11-details-page/src/app/routes.ts" visibleLines="[5,18]"/>
The entries in the `routeConfig` array represent the routes in the application. The first entry navigates to the `HomeComponent` whenever the url matches `''`. The second entry uses some special formatting that will be revisited in a future lesson.
1. Save all changes and confirm that the application works in the browser. The application should still display the list of housing locations.
</docs-step>
</docs-workflow>
Summary: In this lesson, you enabled routing in your app as well as defined new routes. Now your app can support navigation between views. In the next lesson, you will learn to navigate to the "details" page for a given housing location.
You are making great progress with your app, well done.
For more information about the topics covered in this lesson, visit:
<docs-pill-row>
<docs-pill href="guide/routing" title="Routing in Angular Overview"/>
<docs-pill href="guide/routing/common-router-tasks" title="Common Routing Tasks"/>
</docs-pill-row>
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} |
angular/adev/src/content/tutorials/first-app/steps/10-routing/src/index.html_0_427 | <!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>Homes</title>
<base href="/">
<meta name="viewport" content="width=device-width, initial-scale=1">
<link rel="icon" type="image/x-icon" href="favicon.ico">
<link href="https://fonts.googleapis.com/css2?family=Be+Vietnam+Pro:ital,wght@0,400;0,700;1,400;1,700&display=swap" rel="stylesheet">
</head>
<body>
<app-root></app-root>
</body>
</html>
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angular/adev/src/content/tutorials/first-app/steps/10-routing/src/main.ts_0_420 | /*
* Protractor support is deprecated in Angular.
* Protractor is used in this example for compatibility with Angular documentation tools.
*/
import {bootstrapApplication, provideProtractorTestingSupport} from '@angular/platform-browser';
import {AppComponent} from './app/app.component';
bootstrapApplication(AppComponent, {providers: [provideProtractorTestingSupport()]}).catch((err) =>
console.error(err),
);
| {
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"start_byte": 0,
"url": "https://github.com/angular/angular/blob/main/adev/src/content/tutorials/first-app/steps/10-routing/src/main.ts"
} |
angular/adev/src/content/tutorials/first-app/steps/10-routing/src/styles.css_0_443 | /* You can add global styles to this file, and also import other style files */
* {
margin: 0;
padding: 0;
}
body {
font-family: 'Be Vietnam Pro', sans-serif;
}
:root {
--primary-color: #605DC8;
--secondary-color: #8B89E6;
--accent-color: #e8e7fa;
--shadow-color: #E8E8E8;
}
button.primary {
padding: 10px;
border: solid 1px var(--primary-color);
background: var(--primary-color);
color: white;
border-radius: 8px;
}
| {
"end_byte": 443,
"start_byte": 0,
"url": "https://github.com/angular/angular/blob/main/adev/src/content/tutorials/first-app/steps/10-routing/src/styles.css"
} |
angular/adev/src/content/tutorials/first-app/steps/10-routing/src/app/housinglocation.ts_0_180 | export interface HousingLocation {
id: number;
name: string;
city: string;
state: string;
photo: string;
availableUnits: number;
wifi: boolean;
laundry: boolean;
}
| {
"end_byte": 180,
"start_byte": 0,
"url": "https://github.com/angular/angular/blob/main/adev/src/content/tutorials/first-app/steps/10-routing/src/app/housinglocation.ts"
} |
angular/adev/src/content/tutorials/first-app/steps/10-routing/src/app/housing.service.ts_0_2977 | import {Injectable} from '@angular/core';
import {HousingLocation} from './housinglocation';
@Injectable({
providedIn: 'root',
})
export class HousingService {
readonly baseUrl = 'https://angular.dev/assets/images/tutorials/common';
protected housingLocationList: HousingLocation[] = [
{
id: 0,
name: 'Acme Fresh Start Housing',
city: 'Chicago',
state: 'IL',
photo: `${this.baseUrl}/bernard-hermant-CLKGGwIBTaY-unsplash.jpg`,
availableUnits: 4,
wifi: true,
laundry: true,
},
{
id: 1,
name: 'A113 Transitional Housing',
city: 'Santa Monica',
state: 'CA',
photo: `${this.baseUrl}/brandon-griggs-wR11KBaB86U-unsplash.jpg`,
availableUnits: 0,
wifi: false,
laundry: true,
},
{
id: 2,
name: 'Warm Beds Housing Support',
city: 'Juneau',
state: 'AK',
photo: `${this.baseUrl}/i-do-nothing-but-love-lAyXdl1-Wmc-unsplash.jpg`,
availableUnits: 1,
wifi: false,
laundry: false,
},
{
id: 3,
name: 'Homesteady Housing',
city: 'Chicago',
state: 'IL',
photo: `${this.baseUrl}/ian-macdonald-W8z6aiwfi1E-unsplash.jpg`,
availableUnits: 1,
wifi: true,
laundry: false,
},
{
id: 4,
name: 'Happy Homes Group',
city: 'Gary',
state: 'IN',
photo: `${this.baseUrl}/krzysztof-hepner-978RAXoXnH4-unsplash.jpg`,
availableUnits: 1,
wifi: true,
laundry: false,
},
{
id: 5,
name: 'Hopeful Apartment Group',
city: 'Oakland',
state: 'CA',
photo: `${this.baseUrl}/r-architecture-JvQ0Q5IkeMM-unsplash.jpg`,
availableUnits: 2,
wifi: true,
laundry: true,
},
{
id: 6,
name: 'Seriously Safe Towns',
city: 'Oakland',
state: 'CA',
photo: `${this.baseUrl}/phil-hearing-IYfp2Ixe9nM-unsplash.jpg`,
availableUnits: 5,
wifi: true,
laundry: true,
},
{
id: 7,
name: 'Hopeful Housing Solutions',
city: 'Oakland',
state: 'CA',
photo: `${this.baseUrl}/r-architecture-GGupkreKwxA-unsplash.jpg`,
availableUnits: 2,
wifi: true,
laundry: true,
},
{
id: 8,
name: 'Seriously Safe Towns',
city: 'Oakland',
state: 'CA',
photo: `${this.baseUrl}/saru-robert-9rP3mxf8qWI-unsplash.jpg`,
availableUnits: 10,
wifi: false,
laundry: false,
},
{
id: 9,
name: 'Capital Safe Towns',
city: 'Portland',
state: 'OR',
photo: `${this.baseUrl}/webaliser-_TPTXZd9mOo-unsplash.jpg`,
availableUnits: 6,
wifi: true,
laundry: true,
},
];
getAllHousingLocations(): HousingLocation[] {
return this.housingLocationList;
}
getHousingLocationById(id: number): HousingLocation | undefined {
return this.housingLocationList.find((housingLocation) => housingLocation.id === id);
}
}
| {
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"start_byte": 0,
"url": "https://github.com/angular/angular/blob/main/adev/src/content/tutorials/first-app/steps/10-routing/src/app/housing.service.ts"
} |
angular/adev/src/content/tutorials/first-app/steps/10-routing/src/app/app.component.ts_0_529 | import {Component} from '@angular/core';
import {HomeComponent} from './home/home.component';
@Component({
selector: 'app-root',
standalone: true,
imports: [HomeComponent],
template: `
<main>
<header class="brand-name">
<img class="brand-logo" src="/assets/logo.svg" alt="logo" aria-hidden="true" />
</header>
<section class="content">
<app-home></app-home>
</section>
</main>
`,
styleUrls: ['./app.component.css'],
})
export class AppComponent {
title = 'homes';
}
| {
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"start_byte": 0,
"url": "https://github.com/angular/angular/blob/main/adev/src/content/tutorials/first-app/steps/10-routing/src/app/app.component.ts"
} |
angular/adev/src/content/tutorials/first-app/steps/10-routing/src/app/app.component.css_0_213 | :host {
--content-padding: 10px;
}
header {
display: block;
height: 60px;
padding: var(--content-padding);
box-shadow: 0px 5px 25px var(--shadow-color);
}
.content {
padding: var(--content-padding);
}
| {
"end_byte": 213,
"start_byte": 0,
"url": "https://github.com/angular/angular/blob/main/adev/src/content/tutorials/first-app/steps/10-routing/src/app/app.component.css"
} |
angular/adev/src/content/tutorials/first-app/steps/10-routing/src/app/home/home.component.ts_0_1080 | import {Component, inject} from '@angular/core';
import {CommonModule} from '@angular/common';
import {HousingLocationComponent} from '../housing-location/housing-location.component';
import {HousingLocation} from '../housinglocation';
import {HousingService} from '../housing.service';
@Component({
selector: 'app-home',
standalone: true,
imports: [CommonModule, HousingLocationComponent],
template: `
<section>
<form>
<input type="text" placeholder="Filter by city" />
<button class="primary" type="button">Search</button>
</form>
</section>
<section class="results">
<app-housing-location
*ngFor="let housingLocation of housingLocationList"
[housingLocation]="housingLocation"
></app-housing-location>
</section>
`,
styleUrls: ['./home.component.css'],
})
export class HomeComponent {
housingLocationList: HousingLocation[] = [];
housingService: HousingService = inject(HousingService);
constructor() {
this.housingLocationList = this.housingService.getAllHousingLocations();
}
}
| {
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"start_byte": 0,
"url": "https://github.com/angular/angular/blob/main/adev/src/content/tutorials/first-app/steps/10-routing/src/app/home/home.component.ts"
} |
angular/adev/src/content/tutorials/first-app/steps/10-routing/src/app/home/home.component.css_0_746 | .results {
display: grid;
column-gap: 14px;
row-gap: 14px;
grid-template-columns: repeat(auto-fill, minmax(400px, 400px));
margin-top: 50px;
justify-content: space-around;
}
input[type="text"] {
border: solid 1px var(--primary-color);
padding: 10px;
border-radius: 8px;
margin-right: 4px;
display: inline-block;
width: 30%;
}
button {
padding: 10px;
border: solid 1px var(--primary-color);
background: var(--primary-color);
color: white;
border-radius: 8px;
}
@media (min-width: 500px) and (max-width: 768px) {
.results {
grid-template-columns: repeat(2, 1fr);
}
input[type="text"] {
width: 70%;
}
}
@media (max-width: 499px) {
.results {
grid-template-columns: 1fr;
}
}
| {
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"url": "https://github.com/angular/angular/blob/main/adev/src/content/tutorials/first-app/steps/10-routing/src/app/home/home.component.css"
} |
angular/adev/src/content/tutorials/first-app/steps/10-routing/src/app/housing-location/housing-location.component.css_0_583 | .listing {
background: var(--accent-color);
border-radius: 30px;
padding-bottom: 30px;
}
.listing-heading {
color: var(--primary-color);
padding: 10px 20px 0 20px;
}
.listing-photo {
height: 250px;
width: 100%;
object-fit: cover;
border-radius: 30px 30px 0 0;
}
.listing-location {
padding: 10px 20px 20px 20px;
}
.listing-location::before {
content: url("/assets/location-pin.svg") / "";
}
section.listing a {
padding-left: 20px;
text-decoration: none;
color: var(--primary-color);
}
section.listing a::after {
content: "\203A";
margin-left: 5px;
}
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} |
angular/adev/src/content/tutorials/first-app/steps/10-routing/src/app/housing-location/housing-location.component.ts_0_776 | import {Component, Input} from '@angular/core';
import {CommonModule} from '@angular/common';
import {HousingLocation} from '../housinglocation';
@Component({
selector: 'app-housing-location',
standalone: true,
imports: [CommonModule],
template: `
<section class="listing">
<img
class="listing-photo"
[src]="housingLocation.photo"
alt="Exterior photo of {{ housingLocation.name }}"
crossorigin
/>
<h2 class="listing-heading">{{ housingLocation.name }}</h2>
<p class="listing-location">{{ housingLocation.city }}, {{ housingLocation.state }}</p>
</section>
`,
styleUrls: ['./housing-location.component.css'],
})
export class HousingLocationComponent {
@Input() housingLocation!: HousingLocation;
}
| {
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} |
angular/adev/src/content/tutorials/first-app/steps/10-routing/src/assets/location-pin.svg_0_502 | <?xml version="1.0" encoding="UTF-8"?>
<svg width="20pt" height="20pt" version="1.1" viewBox="0 0 100 100" xmlns="http://www.w3.org/2000/svg">
<path d="m50 11.602c-15.398 0-27.898 12.5-27.898 27.898 0 5 1.3008 9.6992 3.6016 13.801l2.8984 4.1992 21.398 30.898 21.801-31.398 2.1992-3.1992c2.5-4.1992 3.8984-9 3.8984-14.199 0-15.5-12.5-28-27.898-28zm0 35.598c-4.1992 0-7.6992-3.3984-7.6992-7.6992s3.3984-7.6992 7.6992-7.6992 7.6992 3.3984 7.6992 7.6992-3.5 7.6992-7.6992 7.6992z" fill="#605cc8"/>
</svg>
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} |
angular/adev/src/content/tutorials/first-app/steps/10-routing/src/assets/logo.svg_0_2207 | <svg width="151" height="44" viewBox="0 0 151 44" fill="none" xmlns="http://www.w3.org/2000/svg">
<path fill-rule="evenodd" clip-rule="evenodd" d="M6.15532 33.2946C5.25369 33.2946 4.58006 32.5707 4.58006 31.6701V24.0152C4.58006 19.5469 4.35206 20.6276 7.59585 17.4236C21.7317 4.06732 16.2425 4.24744 29.6149 18.054C32.0434 20.7627 31.9985 19.4534 31.9985 23.8316V31.6667C31.9985 32.5707 31.28 33.2912 30.3749 33.2912H6.15532V33.2946Z" fill="#605DC8"/>
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} |
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angular/adev/src/content/tutorials/first-app/steps/10-routing/src/assets/logo.svg_6612_6619 | </svg>
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} |
angular/adev/src/content/tutorials/first-app/steps/11-details-page/README.md_0_7579 | # Integrate details page into application
This tutorial lesson demonstrates how to connect the details page to your app.
<docs-video src="https://www.youtube.com/embed/-jRxG84AzCI?si=CbqIpmRpwp5ZZDnu&start=345"/>
IMPORTANT: We recommend using your local environment to learn routing.
## What you'll learn
At the end of this lesson your application will have support for routing to the details page.
## Conceptual preview of routing with route parameters
Each housing location has specific details that should be displayed when a user navigates to the details page for that item. To accomplish this goal, you will need to use route parameters.
Route parameters enable you to include dynamic information as a part of your route URL. To identify which housing location a user has clicked on you will use the `id` property of the `HousingLocation` type.
<docs-workflow>
<docs-step title="Using `routerLink` for dynamic navigation">
In lesson 10, you added a second route to `src/app/routes.ts` which includes a special segment that identifies the route parameter, `id`:
<docs-code language="javascript">
'details/:id'
</docs-code>
In this case, `:id` is dynamic and will change based on how the route is requested by the code.
1. In `src/app/housing-location/housing-location.component.ts`, add an anchor tag to the `section` element and include the `routerLink` directive:
<docs-code header="Add anchor with a routerLink directive to housing-location.component.ts" path="adev/src/content/tutorials/first-app/steps/12-forms/src/app/housing-location/housing-location.component.ts" visibleLines="[20]"/>
The `routerLink` directive enables Angular's router to create dynamic links in the application. The value assigned to the `routerLink` is an array with two entries: the static portion of the path and the dynamic data.
For the `routerLink` to work in the template, add a file level import of `RouterLink` and `RouterOutlet` from '@angular/router', then update the component `imports` array to include both `RouterLink` and `RouterOutlet`.
1. At this point you can confirm that the routing is working in your app. In the browser, refresh the home page and click the "Learn More" button for a housing location.
<img alt="details page displaying the text 'details works!'" src="assets/images/tutorials/first-app/homes-app-lesson-11-step-1.png">
</docs-step>
<docs-step title="Get route parameters">
In this step, you will get the route parameter in the `DetailsComponent`. Currently, the app displays `details works!`. Next you'll update the code to display the `id` value passed using the route parameters.
1. In `src/app/details/details.component.ts` update the template to import the functions, classes and services that you'll need to use in the `DetailsComponent`:
<docs-code header="Update file level imports" path="adev/src/content/tutorials/first-app/steps/12-forms/src/app/details/details.component.ts" visibleLines="[1,5]"/>
1. Update the `template` property of the `@Component` decorator to display the value `housingLocationId`:
<docs-code language="javascript">
template: `<p>details works! {{ housingLocationId }}</p>`,
</docs-code>
1. Update the body of the `DetailsComponent` class with the following code:
<docs-code language="javascript">
export class DetailsComponent {
route: ActivatedRoute = inject(ActivatedRoute);
housingLocationId = -1;
constructor() {
this.housingLocationId = Number(this.route.snapshot.params['id']);
}
}
</docs-code>
This code gives the `DetailsComponent` access to the `ActivatedRoute` router feature that enables you to have access to the data about the current route. In the `constructor`, the code converts the `id` parameter acquired from the route from a string to a number.
1. Save all changes.
1. In the browser, click on one of the housing location's "Learn More" links and confirm that the numeric value displayed on the page matches the `id` property for that location in the data.
</docs-step>
<docs-step title="Customize the `DetailComponent`">
Now that routing is working properly in the application this is a great time to update the template of the `DetailsComponent` to display the specific data represented by the housing location for the route parameter.
To access the data you will add a call to the `HousingService`.
1. Update the template code to match the following code:
<docs-code header="Update the DetailsComponent template in src/app/details/details.component.ts" path="adev/src/content/tutorials/first-app/steps/12-forms/src/app/details/details.component.ts" visibleLines="[11,32]"/>
Notice that the `housingLocation` properties are being accessed with the optional chaining operator `?`. This ensures that if the `housingLocation` value is null or undefined the application doesn't crash.
1. Update the body of the `DetailsComponent` class to match the following code:
<docs-code header="Update the DetailsComponent class in src/app/details/details.component.ts" path="adev/src/content/tutorials/first-app/steps/12-forms/src/app/details/details.component.ts" visibleLines="[35,44]"/>
Now the component has the code to display the correct information based on the selected housing location. The `constructor` now includes a call to the `HousingService` to pass the route parameter as an argument to the `getHousingLocationById` service function.
1. Copy the following styles into the `src/app/details/details.component.css` file:
<docs-code header="Add styles for the DetailsComponent" path="adev/src/content/tutorials/first-app/steps/12-forms/src/app/details/details.component.css" visibleLines="[1,71]"/>
1. Save your changes.
1. In the browser refresh the page and confirm that when you click on the "Learn More" link for a given housing location the details page displays the correct information based on the data for that selected item.
<img alt="Details page listing home info" src="assets/images/tutorials/first-app/homes-app-lesson-11-step-3.png">
</docs-step>
<docs-step title="Add navigation to the `HomeComponent`">
In a previous lesson you updated the `AppComponent` template to include a `routerLink`. Adding that code updated your app to enable navigation back to the `HomeComponent` whenever the logo is clicked.
1. Confirm that your code matches the following:
<docs-code header="Add routerLink to AppComponent" path="adev/src/content/tutorials/first-app/steps/12-forms/src/app/app.component.ts" visibleLines="[8,20]"/>
Your code may already be up-to-date but confirm to be sure.
</docs-step>
</docs-workflow>
Summary: In this lesson you added routing to show details pages.
You now know how to:
* use route parameters to pass data to a route
* use the `routerLink` directive to use dynamic data to create a route
* use route parameter to retrieve data from the `HousingService` to display specific housing location information.
Really great work so far.
For more information about the topics covered in this lesson, visit:
<docs-pill-row>
<docs-pill href="guide/routing/common-router-tasks#accessing-query-parameters-and-fragments" title="Route Parameters"/>
<docs-pill href="guide/routing" title="Routing in Angular Overview"/>
<docs-pill href="guide/routing/common-router-tasks" title="Common Routing Tasks"/>
<docs-pill href="https://developer.mozilla.org/docs/Web/JavaScript/Reference/Operators/Optional_chaining" title="Optional Chaining Operator"/>
</docs-pill-row>
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} |
angular/adev/src/content/tutorials/first-app/steps/11-details-page/src/index.html_0_427 | <!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>Homes</title>
<base href="/">
<meta name="viewport" content="width=device-width, initial-scale=1">
<link rel="icon" type="image/x-icon" href="favicon.ico">
<link href="https://fonts.googleapis.com/css2?family=Be+Vietnam+Pro:ital,wght@0,400;0,700;1,400;1,700&display=swap" rel="stylesheet">
</head>
<body>
<app-root></app-root>
</body>
</html>
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"url": "https://github.com/angular/angular/blob/main/adev/src/content/tutorials/first-app/steps/11-details-page/src/index.html"
} |
angular/adev/src/content/tutorials/first-app/steps/11-details-page/src/main.ts_0_536 | /*
* Protractor support is deprecated in Angular.
* Protractor is used in this example for compatibility with Angular documentation tools.
*/
import {bootstrapApplication, provideProtractorTestingSupport} from '@angular/platform-browser';
import {AppComponent} from './app/app.component';
import {provideRouter} from '@angular/router';
import routeConfig from './app/routes';
bootstrapApplication(AppComponent, {
providers: [provideProtractorTestingSupport(), provideRouter(routeConfig)],
}).catch((err) => console.error(err));
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} |
angular/adev/src/content/tutorials/first-app/steps/11-details-page/src/styles.css_0_443 | /* You can add global styles to this file, and also import other style files */
* {
margin: 0;
padding: 0;
}
body {
font-family: 'Be Vietnam Pro', sans-serif;
}
:root {
--primary-color: #605DC8;
--secondary-color: #8B89E6;
--accent-color: #e8e7fa;
--shadow-color: #E8E8E8;
}
button.primary {
padding: 10px;
border: solid 1px var(--primary-color);
background: var(--primary-color);
color: white;
border-radius: 8px;
}
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"url": "https://github.com/angular/angular/blob/main/adev/src/content/tutorials/first-app/steps/11-details-page/src/styles.css"
} |
angular/adev/src/content/tutorials/first-app/steps/11-details-page/src/app/routes.ts_0_389 | import {Routes} from '@angular/router';
import {HomeComponent} from './home/home.component';
import {DetailsComponent} from './details/details.component';
const routeConfig: Routes = [
{
path: '',
component: HomeComponent,
title: 'Home page',
},
{
path: 'details/:id',
component: DetailsComponent,
title: 'Home details',
},
];
export default routeConfig;
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} |
angular/adev/src/content/tutorials/first-app/steps/11-details-page/src/app/housinglocation.ts_0_180 | export interface HousingLocation {
id: number;
name: string;
city: string;
state: string;
photo: string;
availableUnits: number;
wifi: boolean;
laundry: boolean;
}
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} |
angular/adev/src/content/tutorials/first-app/steps/11-details-page/src/app/housing.service.ts_0_2978 | import {Injectable} from '@angular/core';
import {HousingLocation} from './housinglocation';
@Injectable({
providedIn: 'root',
})
export class HousingService {
readonly baseUrl = 'https://angular.dev/assets/images/tutorials/common';
protected housingLocationList: HousingLocation[] = [
{
id: 0,
name: 'Acme Fresh Start Housing',
city: 'Chicago',
state: 'IL',
photo: `${this.baseUrl}/bernard-hermant-CLKGGwIBTaY-unsplash.jpg`,
availableUnits: 4,
wifi: true,
laundry: true,
},
{
id: 1,
name: 'A113 Transitional Housing',
city: 'Santa Monica',
state: 'CA',
photo: `${this.baseUrl}/brandon-griggs-wR11KBaB86U-unsplash.jpg`,
availableUnits: 0,
wifi: false,
laundry: true,
},
{
id: 2,
name: 'Warm Beds Housing Support',
city: 'Juneau',
state: 'AK',
photo: `${this.baseUrl}/i-do-nothing-but-love-lAyXdl1-Wmc-unsplash.jpg`,
availableUnits: 1,
wifi: false,
laundry: false,
},
{
id: 3,
name: 'Homesteady Housing',
city: 'Chicago',
state: 'IL',
photo: `${this.baseUrl}/ian-macdonald-W8z6aiwfi1E-unsplash.jpg`,
availableUnits: 1,
wifi: true,
laundry: false,
},
{
id: 4,
name: 'Happy Homes Group',
city: 'Gary',
state: 'IN',
photo: `${this.baseUrl}/krzysztof-hepner-978RAXoXnH4-unsplash.jpg`,
availableUnits: 1,
wifi: true,
laundry: false,
},
{
id: 5,
name: 'Hopeful Apartment Group',
city: 'Oakland',
state: 'CA',
photo: `${this.baseUrl}/r-architecture-JvQ0Q5IkeMM-unsplash.jpg`,
availableUnits: 2,
wifi: true,
laundry: true,
},
{
id: 6,
name: 'Seriously Safe Towns',
city: 'Oakland',
state: 'CA',
photo: `${this.baseUrl}/phil-hearing-IYfp2Ixe9nM-unsplash.jpg`,
availableUnits: 5,
wifi: true,
laundry: true,
},
{
id: 7,
name: 'Hopeful Housing Solutions',
city: 'Oakland',
state: 'CA',
photo: `${this.baseUrl}/r-architecture-GGupkreKwxA-unsplash.jpg`,
availableUnits: 2,
wifi: true,
laundry: true,
},
{
id: 8,
name: 'Seriously Safe Towns',
city: 'Oakland',
state: 'CA',
photo: `${this.baseUrl}/saru-robert-9rP3mxf8qWI-unsplash.jpg`,
availableUnits: 10,
wifi: false,
laundry: false,
},
{
id: 9,
name: 'Capital Safe Towns',
city: 'Portland',
state: 'OR',
photo: `${this.baseUrl}/webaliser-_TPTXZd9mOo-unsplash.jpg`,
availableUnits: 6,
wifi: true,
laundry: true,
},
];
getAllHousingLocations(): HousingLocation[] {
return this.housingLocationList;
}
getHousingLocationById(id: number): HousingLocation | undefined {
return this.housingLocationList.find((housingLocation) => housingLocation.id === id);
}
}
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} |
angular/adev/src/content/tutorials/first-app/steps/11-details-page/src/app/app.component.ts_0_646 | import {Component} from '@angular/core';
import {HomeComponent} from './home/home.component';
import {RouterModule} from '@angular/router';
@Component({
selector: 'app-root',
standalone: true,
imports: [HomeComponent, RouterModule],
template: `
<main>
<a [routerLink]="['/']">
<header class="brand-name">
<img class="brand-logo" src="/assets/logo.svg" alt="logo" aria-hidden="true" />
</header>
</a>
<section class="content">
<router-outlet></router-outlet>
</section>
</main>
`,
styleUrls: ['./app.component.css'],
})
export class AppComponent {
title = 'homes';
}
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angular/adev/src/content/tutorials/first-app/steps/11-details-page/src/app/app.component.css_0_213 | :host {
--content-padding: 10px;
}
header {
display: block;
height: 60px;
padding: var(--content-padding);
box-shadow: 0px 5px 25px var(--shadow-color);
}
.content {
padding: var(--content-padding);
}
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angular/adev/src/content/tutorials/first-app/steps/11-details-page/src/app/home/home.component.ts_0_1081 | import {Component, inject} from '@angular/core';
import {CommonModule} from '@angular/common';
import {HousingLocationComponent} from '../housing-location/housing-location.component';
import {HousingLocation} from '../housinglocation';
import {HousingService} from '../housing.service';
@Component({
selector: 'app-home',
standalone: true,
imports: [CommonModule, HousingLocationComponent],
template: `
<section>
<form>
<input type="text" placeholder="Filter by city" />
<button class="primary" type="button">Search</button>
</form>
</section>
<section class="results">
<app-housing-location
*ngFor="let housingLocation of housingLocationList"
[housingLocation]="housingLocation"
></app-housing-location>
</section>
`,
styleUrls: ['./home.component.css'],
})
export class HomeComponent {
housingLocationList: HousingLocation[] = [];
housingService: HousingService = inject(HousingService);
constructor() {
this.housingLocationList = this.housingService.getAllHousingLocations();
}
}
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angular/adev/src/content/tutorials/first-app/steps/11-details-page/src/app/home/home.component.css_0_746 | .results {
display: grid;
column-gap: 14px;
row-gap: 14px;
grid-template-columns: repeat(auto-fill, minmax(400px, 400px));
margin-top: 50px;
justify-content: space-around;
}
input[type="text"] {
border: solid 1px var(--primary-color);
padding: 10px;
border-radius: 8px;
margin-right: 4px;
display: inline-block;
width: 30%;
}
button {
padding: 10px;
border: solid 1px var(--primary-color);
background: var(--primary-color);
color: white;
border-radius: 8px;
}
@media (min-width: 500px) and (max-width: 768px) {
.results {
grid-template-columns: repeat(2, 1fr);
}
input[type="text"] {
width: 70%;
}
}
@media (max-width: 499px) {
.results {
grid-template-columns: 1fr;
}
}
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angular/adev/src/content/tutorials/first-app/steps/11-details-page/src/app/housing-location/housing-location.component.css_0_583 | .listing {
background: var(--accent-color);
border-radius: 30px;
padding-bottom: 30px;
}
.listing-heading {
color: var(--primary-color);
padding: 10px 20px 0 20px;
}
.listing-photo {
height: 250px;
width: 100%;
object-fit: cover;
border-radius: 30px 30px 0 0;
}
.listing-location {
padding: 10px 20px 20px 20px;
}
.listing-location::before {
content: url("/assets/location-pin.svg") / "";
}
section.listing a {
padding-left: 20px;
text-decoration: none;
color: var(--primary-color);
}
section.listing a::after {
content: "\203A";
margin-left: 5px;
}
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} |
angular/adev/src/content/tutorials/first-app/steps/11-details-page/src/app/housing-location/housing-location.component.ts_0_836 | import {Component, Input} from '@angular/core';
import {CommonModule} from '@angular/common';
import {HousingLocation} from '../housinglocation';
import {RouterModule} from '@angular/router';
@Component({
selector: 'app-housing-location',
standalone: true,
imports: [CommonModule, RouterModule],
template: `
<section class="listing">
<img
class="listing-photo"
[src]="housingLocation.photo"
alt="Exterior photo of {{ housingLocation.name }}"
crossorigin
/>
<h2 class="listing-heading">{{ housingLocation.name }}</h2>
<p class="listing-location">{{ housingLocation.city }}, {{ housingLocation.state }}</p>
</section>
`,
styleUrls: ['./housing-location.component.css'],
})
export class HousingLocationComponent {
@Input() housingLocation!: HousingLocation;
}
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} |
angular/adev/src/content/tutorials/first-app/steps/11-details-page/src/app/details/details.component.ts_0_298 | import {Component} from '@angular/core';
import {CommonModule} from '@angular/common';
@Component({
selector: 'app-details',
standalone: true,
imports: [CommonModule],
template: `
<p>details works!</p>
`,
styleUrls: ['./details.component.css'],
})
export class DetailsComponent {}
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angular/adev/src/content/tutorials/first-app/steps/11-details-page/src/assets/location-pin.svg_0_502 | <?xml version="1.0" encoding="UTF-8"?>
<svg width="20pt" height="20pt" version="1.1" viewBox="0 0 100 100" xmlns="http://www.w3.org/2000/svg">
<path d="m50 11.602c-15.398 0-27.898 12.5-27.898 27.898 0 5 1.3008 9.6992 3.6016 13.801l2.8984 4.1992 21.398 30.898 21.801-31.398 2.1992-3.1992c2.5-4.1992 3.8984-9 3.8984-14.199 0-15.5-12.5-28-27.898-28zm0 35.598c-4.1992 0-7.6992-3.3984-7.6992-7.6992s3.3984-7.6992 7.6992-7.6992 7.6992 3.3984 7.6992 7.6992-3.5 7.6992-7.6992 7.6992z" fill="#605cc8"/>
</svg>
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} |
angular/adev/src/content/tutorials/first-app/steps/11-details-page/src/assets/logo.svg_0_2207 | <svg width="151" height="44" viewBox="0 0 151 44" fill="none" xmlns="http://www.w3.org/2000/svg">
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angular/adev/src/content/tutorials/first-app/steps/11-details-page/src/assets/logo.svg_6612_6619 | </svg>
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angular/adev/src/content/tutorials/first-app/steps/05-inputs/README.md_0_2955 | # Add an input parameter to the component
This tutorial lesson demonstrates how to create a component `@Input()` and use it to pass data to a component for customization.
<docs-video src="https://www.youtube.com/embed/eM3zi_n7lNs?si=WvRGFSkW_7_zDIFD&start=241"/>
## What you'll learn
Your app's `HousingLocationComponent` template has a `HousingLocation` property to receive input.
## Conceptual preview of Inputs
[Inputs](api/core/Input) allow components to share data. The direction of the data sharing is from parent component to child component.
In this lesson, you'll define `@Input()` properties in the `HousingLocationComponent` component which will enable you to customize the data displayed in the component.
Learn more in the [Accepting data with input properties](guide/components/inputs) and [Custom events with outputs](guide/components/outputs) guides.
<docs-workflow>
<docs-step title="Import the Input decorator">
This step imports the `Input` decorator into the class.
In the code editor:
1. Navigate to `src/app/housing-location/housing-location.component.ts`
1. Update the file imports to include `Input` and `HousingLocation`:
<docs-code header="Import HousingLocationComponent and Input in src/app/housing-location/housing-location.component.ts" path="adev/src/content/tutorials/first-app/steps/06-property-binding/src/app/housing-location/housing-location.component.ts" visibleLines="[1,3]"/>
</docs-step>
<docs-step title="Add the Input property">
1. In the same file, add a property called `housingLocation` of type `HousingLocation` to the `HousingLocationComponent` class. Add an `!` after the property name and prefix it with the `@Input()` decorator:
<docs-code header="Import HousingLocationComponent and Input in src/app/housing-location/housing-location.component.ts" path="adev/src/content/tutorials/first-app/steps/06-property-binding/src/app/housing-location/housing-location.component.ts" visibleLines="[13,15]"/>
You have to add the `!` because the input is expecting the value to be passed. In this case, there is no default value. In our example application case we know that the value will be passed in - this is by design. The exclamation point is called the non-null assertion operator and it tells the TypeScript compiler that the value of this property won't be null or undefined.
1. Save your changes and confirm the app does not have any errors.
1. Correct any errors before you continue to the next step.
</docs-step>
</docs-workflow>
Summary: In this lesson, you created a new property decorated with the `@Input()` decorator. You also used the non-null assertion operator to notify the compiler that the value of the new property won't be `null` or `undefined`.
<docs-pill-row>
<docs-pill href="guide/components/inputs" title="Accepting data with input properties"/>
<docs-pill href="guide/components/outputs" title="Custom events with outputs"/>
</docs-pill-row>
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} |
angular/adev/src/content/tutorials/first-app/steps/05-inputs/src/index.html_0_427 | <!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>Homes</title>
<base href="/">
<meta name="viewport" content="width=device-width, initial-scale=1">
<link rel="icon" type="image/x-icon" href="favicon.ico">
<link href="https://fonts.googleapis.com/css2?family=Be+Vietnam+Pro:ital,wght@0,400;0,700;1,400;1,700&display=swap" rel="stylesheet">
</head>
<body>
<app-root></app-root>
</body>
</html>
| {
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"url": "https://github.com/angular/angular/blob/main/adev/src/content/tutorials/first-app/steps/05-inputs/src/index.html"
} |
angular/adev/src/content/tutorials/first-app/steps/05-inputs/src/main.ts_0_420 | /*
* Protractor support is deprecated in Angular.
* Protractor is used in this example for compatibility with Angular documentation tools.
*/
import {bootstrapApplication, provideProtractorTestingSupport} from '@angular/platform-browser';
import {AppComponent} from './app/app.component';
bootstrapApplication(AppComponent, {providers: [provideProtractorTestingSupport()]}).catch((err) =>
console.error(err),
);
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"url": "https://github.com/angular/angular/blob/main/adev/src/content/tutorials/first-app/steps/05-inputs/src/main.ts"
} |
angular/adev/src/content/tutorials/first-app/steps/05-inputs/src/styles.css_0_443 | /* You can add global styles to this file, and also import other style files */
* {
margin: 0;
padding: 0;
}
body {
font-family: 'Be Vietnam Pro', sans-serif;
}
:root {
--primary-color: #605DC8;
--secondary-color: #8B89E6;
--accent-color: #e8e7fa;
--shadow-color: #E8E8E8;
}
button.primary {
padding: 10px;
border: solid 1px var(--primary-color);
background: var(--primary-color);
color: white;
border-radius: 8px;
}
| {
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"start_byte": 0,
"url": "https://github.com/angular/angular/blob/main/adev/src/content/tutorials/first-app/steps/05-inputs/src/styles.css"
} |
angular/adev/src/content/tutorials/first-app/steps/05-inputs/src/app/housinglocation.ts_0_180 | export interface HousingLocation {
id: number;
name: string;
city: string;
state: string;
photo: string;
availableUnits: number;
wifi: boolean;
laundry: boolean;
}
| {
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"url": "https://github.com/angular/angular/blob/main/adev/src/content/tutorials/first-app/steps/05-inputs/src/app/housinglocation.ts"
} |
angular/adev/src/content/tutorials/first-app/steps/05-inputs/src/app/app.component.ts_0_529 | import {Component} from '@angular/core';
import {HomeComponent} from './home/home.component';
@Component({
selector: 'app-root',
standalone: true,
imports: [HomeComponent],
template: `
<main>
<header class="brand-name">
<img class="brand-logo" src="/assets/logo.svg" alt="logo" aria-hidden="true" />
</header>
<section class="content">
<app-home></app-home>
</section>
</main>
`,
styleUrls: ['./app.component.css'],
})
export class AppComponent {
title = 'homes';
}
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"url": "https://github.com/angular/angular/blob/main/adev/src/content/tutorials/first-app/steps/05-inputs/src/app/app.component.ts"
} |
angular/adev/src/content/tutorials/first-app/steps/05-inputs/src/app/app.component.css_0_213 | :host {
--content-padding: 10px;
}
header {
display: block;
height: 60px;
padding: var(--content-padding);
box-shadow: 0px 5px 25px var(--shadow-color);
}
.content {
padding: var(--content-padding);
}
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"url": "https://github.com/angular/angular/blob/main/adev/src/content/tutorials/first-app/steps/05-inputs/src/app/app.component.css"
} |
angular/adev/src/content/tutorials/first-app/steps/05-inputs/src/app/home/home.component.ts_0_1010 | import {Component} from '@angular/core';
import {CommonModule} from '@angular/common';
import {HousingLocationComponent} from '../housing-location/housing-location.component';
import {HousingLocation} from '../housinglocation';
@Component({
selector: 'app-home',
standalone: true,
imports: [CommonModule, HousingLocationComponent],
template: `
<section>
<form>
<input type="text" placeholder="Filter by city" />
<button class="primary" type="button">Search</button>
</form>
</section>
<section class="results">
<app-housing-location></app-housing-location>
</section>
`,
styleUrls: ['./home.component.css'],
})
export class HomeComponent {
readonly baseUrl = 'https://angular.dev/assets/images/tutorials/common';
housingLocation: HousingLocation = {
id: 9999,
name: 'Test Home',
city: 'Test city',
state: 'ST',
photo: `${this.baseUrl}/example-house.jpg`,
availableUnits: 99,
wifi: true,
laundry: false,
};
}
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"url": "https://github.com/angular/angular/blob/main/adev/src/content/tutorials/first-app/steps/05-inputs/src/app/home/home.component.ts"
} |
angular/adev/src/content/tutorials/first-app/steps/05-inputs/src/app/home/home.component.css_0_746 | .results {
display: grid;
column-gap: 14px;
row-gap: 14px;
grid-template-columns: repeat(auto-fill, minmax(400px, 400px));
margin-top: 50px;
justify-content: space-around;
}
input[type="text"] {
border: solid 1px var(--primary-color);
padding: 10px;
border-radius: 8px;
margin-right: 4px;
display: inline-block;
width: 30%;
}
button {
padding: 10px;
border: solid 1px var(--primary-color);
background: var(--primary-color);
color: white;
border-radius: 8px;
}
@media (min-width: 500px) and (max-width: 768px) {
.results {
grid-template-columns: repeat(2, 1fr);
}
input[type="text"] {
width: 70%;
}
}
@media (max-width: 499px) {
.results {
grid-template-columns: 1fr;
}
}
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"url": "https://github.com/angular/angular/blob/main/adev/src/content/tutorials/first-app/steps/05-inputs/src/app/home/home.component.css"
} |
angular/adev/src/content/tutorials/first-app/steps/05-inputs/src/app/housing-location/housing-location.component.css_0_583 | .listing {
background: var(--accent-color);
border-radius: 30px;
padding-bottom: 30px;
}
.listing-heading {
color: var(--primary-color);
padding: 10px 20px 0 20px;
}
.listing-photo {
height: 250px;
width: 100%;
object-fit: cover;
border-radius: 30px 30px 0 0;
}
.listing-location {
padding: 10px 20px 20px 20px;
}
.listing-location::before {
content: url("/assets/location-pin.svg") / "";
}
section.listing a {
padding-left: 20px;
text-decoration: none;
color: var(--primary-color);
}
section.listing a::after {
content: "\203A";
margin-left: 5px;
}
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"url": "https://github.com/angular/angular/blob/main/adev/src/content/tutorials/first-app/steps/05-inputs/src/app/housing-location/housing-location.component.css"
} |
angular/adev/src/content/tutorials/first-app/steps/05-inputs/src/app/housing-location/housing-location.component.ts_0_333 | import {Component} from '@angular/core';
import {CommonModule} from '@angular/common';
@Component({
selector: 'app-housing-location',
standalone: true,
imports: [CommonModule],
template: `
<p>housing-location works!</p>
`,
styleUrls: ['./housing-location.component.css'],
})
export class HousingLocationComponent {}
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} |
angular/adev/src/content/tutorials/first-app/steps/05-inputs/src/assets/location-pin.svg_0_502 | <?xml version="1.0" encoding="UTF-8"?>
<svg width="20pt" height="20pt" version="1.1" viewBox="0 0 100 100" xmlns="http://www.w3.org/2000/svg">
<path d="m50 11.602c-15.398 0-27.898 12.5-27.898 27.898 0 5 1.3008 9.6992 3.6016 13.801l2.8984 4.1992 21.398 30.898 21.801-31.398 2.1992-3.1992c2.5-4.1992 3.8984-9 3.8984-14.199 0-15.5-12.5-28-27.898-28zm0 35.598c-4.1992 0-7.6992-3.3984-7.6992-7.6992s3.3984-7.6992 7.6992-7.6992 7.6992 3.3984 7.6992 7.6992-3.5 7.6992-7.6992 7.6992z" fill="#605cc8"/>
</svg>
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"url": "https://github.com/angular/angular/blob/main/adev/src/content/tutorials/first-app/steps/05-inputs/src/assets/location-pin.svg"
} |
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angular/adev/src/content/tutorials/first-app/steps/05-inputs/src/assets/logo.svg_6612_6619 | </svg>
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angular/adev/src/content/tutorials/first-app/steps/08-ngFor/README.md_0_3346 | # Use *ngFor to list objects in component
This tutorial lesson demonstrates how to use `ngFor` directive in Angular templates in order to display dynamically repeated data in a template.
<docs-video src="https://www.youtube.com/embed/eM3zi_n7lNs?si=MIl5NcRxvcLjYt5f&start=477"/>
## What you'll learn
* You will have added a data set to the app
* Your app will display a list of elements from the new data set using `ngFor`
## Conceptual preview of ngFor
In Angular, `ngFor` is a specific type of [directive](guide/directives) used to dynamically repeat data in a template. In plain JavaScript you would use a for loop - ngFor provides similar functionality for Angular templates.
You can utilize `ngFor` to iterate over arrays and even asynchronous values. In this lesson, you'll add a new array of data to iterate over.
For a more in depth explanation, please refer to the [Built-in directives](guide/directives#ngFor) guide.
<docs-workflow>
<docs-step title="Add housing data to the `HomeComponent`">
In the `HomeComponent` there is only a single housing location. In this step, you will add an array of `HousingLocation` entries.
1. In `src/app/home/home.component.ts`, remove the `housingLocation` property from the `HomeComponent` class.
1. Update the `HomeComponent` class to have a property called `housingLocationList`. Update your code to match the following code:
<docs-code header="Add housingLocationList property" path="adev/src/content/tutorials/first-app/steps/09-services/src/app/home/home.component.ts" visibleLines="26-131"/>
IMPORTANT: Do not remove the `@Component` decorator, you will update that code in an upcoming step.
</docs-step>
<docs-step title="Update the `HomeComponent` template to use `ngFor`">
Now the app has a dataset that you can use to display the entries in the browser using the `ngFor` directive.
1. Update the `<app-housing-location>` tag in the template code to this:
<docs-code header="Add ngFor to HomeComponent template" path="adev/src/content/tutorials/first-app/steps/09-services/src/app/home/home.component.ts" visibleLines="[17,22]"/>
Note, in the code `[housingLocation] = "housingLocation"` the `housingLocation` value now refers to the variable used in the `ngFor` directive. Before this change, it referred to the property on the `HomeComponent` class.
1. Save all changes.
1. Refresh the browser and confirm that the app now renders a grid of housing locations.
<section class="lightbox">
<img alt="browser frame of homes-app displaying logo, filter text input box, search button and a grid of housing location cards" src="assets/images/tutorials/first-app/homes-app-lesson-08-step-2.png">
</section>
</docs-step>
</docs-workflow>
Summary: In this lesson, you used the `ngFor` directive to repeat data dynamically in Angular templates. You also added a new array of data to be used in the Angular app. The application now dynamically renders a list of housing locations in the browser.
The app is taking shape, great job.
For more information about the topics covered in this lesson, visit:
<docs-pill-row>
<docs-pill href="guide/directives/structural-directives" title="Structural Directives"/>
<docs-pill href="guide/directives#ngFor" title="ngFor guide"/>
<docs-pill href="api/common/NgFor" title="ngFor"/>
</docs-pill-row>
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} |
angular/adev/src/content/tutorials/first-app/steps/08-ngFor/src/index.html_0_427 | <!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>Homes</title>
<base href="/">
<meta name="viewport" content="width=device-width, initial-scale=1">
<link rel="icon" type="image/x-icon" href="favicon.ico">
<link href="https://fonts.googleapis.com/css2?family=Be+Vietnam+Pro:ital,wght@0,400;0,700;1,400;1,700&display=swap" rel="stylesheet">
</head>
<body>
<app-root></app-root>
</body>
</html>
| {
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"url": "https://github.com/angular/angular/blob/main/adev/src/content/tutorials/first-app/steps/08-ngFor/src/index.html"
} |
angular/adev/src/content/tutorials/first-app/steps/08-ngFor/src/main.ts_0_420 | /*
* Protractor support is deprecated in Angular.
* Protractor is used in this example for compatibility with Angular documentation tools.
*/
import {bootstrapApplication, provideProtractorTestingSupport} from '@angular/platform-browser';
import {AppComponent} from './app/app.component';
bootstrapApplication(AppComponent, {providers: [provideProtractorTestingSupport()]}).catch((err) =>
console.error(err),
);
| {
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"url": "https://github.com/angular/angular/blob/main/adev/src/content/tutorials/first-app/steps/08-ngFor/src/main.ts"
} |
angular/adev/src/content/tutorials/first-app/steps/08-ngFor/src/styles.css_0_443 | /* You can add global styles to this file, and also import other style files */
* {
margin: 0;
padding: 0;
}
body {
font-family: 'Be Vietnam Pro', sans-serif;
}
:root {
--primary-color: #605DC8;
--secondary-color: #8B89E6;
--accent-color: #e8e7fa;
--shadow-color: #E8E8E8;
}
button.primary {
padding: 10px;
border: solid 1px var(--primary-color);
background: var(--primary-color);
color: white;
border-radius: 8px;
}
| {
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"url": "https://github.com/angular/angular/blob/main/adev/src/content/tutorials/first-app/steps/08-ngFor/src/styles.css"
} |
angular/adev/src/content/tutorials/first-app/steps/08-ngFor/src/app/housinglocation.ts_0_180 | export interface HousingLocation {
id: number;
name: string;
city: string;
state: string;
photo: string;
availableUnits: number;
wifi: boolean;
laundry: boolean;
}
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"url": "https://github.com/angular/angular/blob/main/adev/src/content/tutorials/first-app/steps/08-ngFor/src/app/housinglocation.ts"
} |
angular/adev/src/content/tutorials/first-app/steps/08-ngFor/src/app/app.component.ts_0_529 | import {Component} from '@angular/core';
import {HomeComponent} from './home/home.component';
@Component({
selector: 'app-root',
standalone: true,
imports: [HomeComponent],
template: `
<main>
<header class="brand-name">
<img class="brand-logo" src="/assets/logo.svg" alt="logo" aria-hidden="true" />
</header>
<section class="content">
<app-home></app-home>
</section>
</main>
`,
styleUrls: ['./app.component.css'],
})
export class AppComponent {
title = 'homes';
}
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} |
angular/adev/src/content/tutorials/first-app/steps/08-ngFor/src/app/app.component.css_0_213 | :host {
--content-padding: 10px;
}
header {
display: block;
height: 60px;
padding: var(--content-padding);
box-shadow: 0px 5px 25px var(--shadow-color);
}
.content {
padding: var(--content-padding);
}
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"url": "https://github.com/angular/angular/blob/main/adev/src/content/tutorials/first-app/steps/08-ngFor/src/app/app.component.css"
} |
angular/adev/src/content/tutorials/first-app/steps/08-ngFor/src/app/home/home.component.ts_0_1046 | import {Component} from '@angular/core';
import {CommonModule} from '@angular/common';
import {HousingLocationComponent} from '../housing-location/housing-location.component';
import {HousingLocation} from '../housinglocation';
@Component({
selector: 'app-home',
standalone: true,
imports: [CommonModule, HousingLocationComponent],
template: `
<section>
<form>
<input type="text" placeholder="Filter by city" />
<button class="primary" type="button">Search</button>
</form>
</section>
<section class="results">
<app-housing-location [housingLocation]="housingLocation"></app-housing-location>
</section>
`,
styleUrls: ['./home.component.css'],
})
export class HomeComponent {
readonly baseUrl = 'https://angular.dev/assets/images/tutorials/common';
housingLocation: HousingLocation = {
id: 9999,
name: 'Test Home',
city: 'Test city',
state: 'ST',
photo: `${this.baseUrl}/example-house.jpg`,
availableUnits: 99,
wifi: true,
laundry: false,
};
}
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} |
angular/adev/src/content/tutorials/first-app/steps/08-ngFor/src/app/home/home.component.css_0_746 | .results {
display: grid;
column-gap: 14px;
row-gap: 14px;
grid-template-columns: repeat(auto-fill, minmax(400px, 400px));
margin-top: 50px;
justify-content: space-around;
}
input[type="text"] {
border: solid 1px var(--primary-color);
padding: 10px;
border-radius: 8px;
margin-right: 4px;
display: inline-block;
width: 30%;
}
button {
padding: 10px;
border: solid 1px var(--primary-color);
background: var(--primary-color);
color: white;
border-radius: 8px;
}
@media (min-width: 500px) and (max-width: 768px) {
.results {
grid-template-columns: repeat(2, 1fr);
}
input[type="text"] {
width: 70%;
}
}
@media (max-width: 499px) {
.results {
grid-template-columns: 1fr;
}
}
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"url": "https://github.com/angular/angular/blob/main/adev/src/content/tutorials/first-app/steps/08-ngFor/src/app/home/home.component.css"
} |
angular/adev/src/content/tutorials/first-app/steps/08-ngFor/src/app/housing-location/housing-location.component.css_0_583 | .listing {
background: var(--accent-color);
border-radius: 30px;
padding-bottom: 30px;
}
.listing-heading {
color: var(--primary-color);
padding: 10px 20px 0 20px;
}
.listing-photo {
height: 250px;
width: 100%;
object-fit: cover;
border-radius: 30px 30px 0 0;
}
.listing-location {
padding: 10px 20px 20px 20px;
}
.listing-location::before {
content: url("/assets/location-pin.svg") / "";
}
section.listing a {
padding-left: 20px;
text-decoration: none;
color: var(--primary-color);
}
section.listing a::after {
content: "\203A";
margin-left: 5px;
}
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} |
angular/adev/src/content/tutorials/first-app/steps/08-ngFor/src/app/housing-location/housing-location.component.ts_0_776 | import {Component, Input} from '@angular/core';
import {CommonModule} from '@angular/common';
import {HousingLocation} from '../housinglocation';
@Component({
selector: 'app-housing-location',
standalone: true,
imports: [CommonModule],
template: `
<section class="listing">
<img
class="listing-photo"
[src]="housingLocation.photo"
alt="Exterior photo of {{ housingLocation.name }}"
crossorigin
/>
<h2 class="listing-heading">{{ housingLocation.name }}</h2>
<p class="listing-location">{{ housingLocation.city }}, {{ housingLocation.state }}</p>
</section>
`,
styleUrls: ['./housing-location.component.css'],
})
export class HousingLocationComponent {
@Input() housingLocation!: HousingLocation;
}
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} |
angular/adev/src/content/tutorials/first-app/steps/08-ngFor/src/assets/location-pin.svg_0_502 | <?xml version="1.0" encoding="UTF-8"?>
<svg width="20pt" height="20pt" version="1.1" viewBox="0 0 100 100" xmlns="http://www.w3.org/2000/svg">
<path d="m50 11.602c-15.398 0-27.898 12.5-27.898 27.898 0 5 1.3008 9.6992 3.6016 13.801l2.8984 4.1992 21.398 30.898 21.801-31.398 2.1992-3.1992c2.5-4.1992 3.8984-9 3.8984-14.199 0-15.5-12.5-28-27.898-28zm0 35.598c-4.1992 0-7.6992-3.3984-7.6992-7.6992s3.3984-7.6992 7.6992-7.6992 7.6992 3.3984 7.6992 7.6992-3.5 7.6992-7.6992 7.6992z" fill="#605cc8"/>
</svg>
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angular/adev/src/content/tutorials/first-app/steps/01-hello-world/README.md_0_6374 | # Hello world
This first lesson serves as the starting point from which each lesson in this tutorial adds new features to build a complete Angular app. In this lesson, we'll update the application to display the famous text, "Hello World".
<docs-video src="https://www.youtube.com/embed/UnOwDuliqZA?si=uML-cDRbrxmYdD_9"/>
## What you'll learn
The updated app you have after this lesson confirms that you and your IDE are ready to begin creating an Angular app.
Note: If you are working with the embedded editor, skip to [step three](#create-%60hello-world%60).
When working in the browser playground, you do not need to `ng serve` to run the app. Other commands like `ng generate` can be done in the console window to your right.
<docs-workflow>
<docs-step title="Download the default app">
Start by clicking the "Download" icon in the top right pan of the code editor. This will download a `.zip` file containing the source code for this tutorial. Open this in your local Terminal and IDE then move on to testing the default app.
At any step in the tutorial, you can click this icon to download the step's source code and start from there.
</docs-step>
<docs-step title="Test the default app">
In this step, after you download the default starting app, you build the default Angular app.
This confirms that your development environment has what you need to continue the tutorial.
In the **Terminal** pane of your IDE:
1. In your project directory, navigate to the `first-app` directory.
1. Run this command to install the dependencies needed to run the app.
<docs-code language="shell">
npm install
</docs-code>
1. Run this command to build and serve the default app.
<docs-code language="shell">
ng serve
</docs-code>
The app should build without errors.
1. In a web browser on your development computer, open `http://localhost:4200`.
1. Confirm that the default web site appears in the browser.
1. You can leave `ng serve` running as you complete the next steps.
</docs-step>
<docs-step title="Review the files in the project">
In this step, you get to know the files that make up a default Angular app.
In the **Explorer** pane of your IDE:
1. In your project directory, navigate to the `first-app` directory.
1. Open the `src` directory to see these files.
1. In the file explorer, find the Angular app files (`/src`).
1. `index.html` is the app's top level HTML template.
1. `styles.css` is the app's top level style sheet.
1. `main.ts` is where the app starts running.
1. `favicon.ico` is the app's icon, just as you would find in any web site.
1. In the file explorer, find the Angular app's component files (`/app`).
1. `app.component.ts` is the source file that describes the `app-root` component.
This is the top-level Angular component in the app. A component is the basic building block of an Angular application.
The component description includes the component's code, HTML template, and styles, which can be described in this file, or in separate files.
In this app, the styles are in a separate file while the component's code and HTML template are in this file.
1. `app.component.css` is the style sheet for this component.
1. New components are added to this directory.
1. In the file explorer, find the image directory (`/assets`) that contains images used by the app.
1. In the file explorer, find the files and directories that an Angular app needs to build and run, but they are not files that you normally interact with.
1. `.angular` has files required to build the Angular app.
1. `.e2e` has files used to test the app.
1. `.node_modules` has the node.js packages that the app uses.
1. `angular.json` describes the Angular app to the app building tools.
1. `package.json` is used by `npm` (the node package manager) to run the finished app.
1. `tsconfig.*` are the files that describe the app's configuration to the TypeScript compiler.
After you have reviewed the files that make up an Angular app project, continue to the next step.
</docs-step>
<docs-step title="Create `Hello World`">
In this step, you update the Angular project files to change the displayed content.
In your IDE:
1. Open `first-app/src/index.html`.
Note: This step and the next are only for your local environment!
1. In `index.html`, replace the `<title>` element with this code to update the title of the app.
<docs-code header="Replace in src/index.html" path="adev/src/content/tutorials/first-app/steps/02-HomeComponent/src/index.html" visibleLines="[5]"/>
Then, save the changes you just made to `index.html`.
1. Next, open `first-app/src/app/app.component.ts`.
1. In `app.component.ts`, in the `@Component` definition, replace the `template` line with this code to change the text in the app component.
<docs-code header="Replace in src/app/app.component.ts" path="adev/src/content/tutorials/first-app/steps/02-HomeComponent/src/app/app.component.ts" visibleLines="[7,9]"/>
1. In `app.component.ts`, in the `AppComponent` class definition, replace the `title` line with this code to change the component title.
<docs-code header="Replace in src/app/app.component.ts" path="adev/src/content/tutorials/first-app/steps/02-HomeComponent/src/app/app.component.ts" visibleLines="[12,14]"/>
Then, save the changes you made to `app.component.ts`.
1. If you stopped the `ng serve` command from step 1, in the **Terminal** window of your IDE, run `ng serve` again.
1. Open your browser and navigate to `localhost:4200` and confirm that the app builds without error and displays *Hello world* in the title and body of your app:
<img alt="browser frame of page displaying the text 'Hello World'" src="assets/images/tutorials/first-app/homes-app-lesson-01-browser.png">
</docs-step>
</docs-workflow>
Summary: In this lesson, you updated a default Angular app to display *Hello world*.
In the process, you learned about the `ng serve` command to serve your app locally for testing.
For more information about the topics covered in this lesson, visit:
<docs-pill-row>
<docs-pill href="guide/components" title="Angular Components"/>
<docs-pill href="tools/cli" title="Creating applications with the Angular CLI"/>
</docs-pill-row>
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} |
angular/adev/src/content/tutorials/first-app/steps/01-hello-world/src/index.html_0_429 | <!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>Default</title>
<base href="/">
<meta name="viewport" content="width=device-width, initial-scale=1">
<link rel="icon" type="image/x-icon" href="favicon.ico">
<link href="https://fonts.googleapis.com/css2?family=Be+Vietnam+Pro:ital,wght@0,400;0,700;1,400;1,700&display=swap" rel="stylesheet">
</head>
<body>
<app-root></app-root>
</body>
</html>
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"url": "https://github.com/angular/angular/blob/main/adev/src/content/tutorials/first-app/steps/01-hello-world/src/index.html"
} |
angular/adev/src/content/tutorials/first-app/steps/01-hello-world/src/main.ts_0_420 | /*
* Protractor support is deprecated in Angular.
* Protractor is used in this example for compatibility with Angular documentation tools.
*/
import {bootstrapApplication, provideProtractorTestingSupport} from '@angular/platform-browser';
import {AppComponent} from './app/app.component';
bootstrapApplication(AppComponent, {providers: [provideProtractorTestingSupport()]}).catch((err) =>
console.error(err),
);
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} |
angular/adev/src/content/tutorials/first-app/steps/01-hello-world/src/styles.css_0_443 | /* You can add global styles to this file, and also import other style files */
* {
margin: 0;
padding: 0;
}
body {
font-family: 'Be Vietnam Pro', sans-serif;
}
:root {
--primary-color: #605DC8;
--secondary-color: #8B89E6;
--accent-color: #e8e7fa;
--shadow-color: #E8E8E8;
}
button.primary {
padding: 10px;
border: solid 1px var(--primary-color);
background: var(--primary-color);
color: white;
border-radius: 8px;
}
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"url": "https://github.com/angular/angular/blob/main/adev/src/content/tutorials/first-app/steps/01-hello-world/src/styles.css"
} |
angular/adev/src/content/tutorials/first-app/steps/01-hello-world/src/app/app.component.ts_0_246 | import {Component} from '@angular/core';
@Component({
selector: 'app-root',
standalone: true,
imports: [],
template: `
<h1>Default</h1>
`,
styleUrls: ['./app.component.css'],
})
export class AppComponent {
title = 'default';
}
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} |
angular/adev/src/content/tutorials/first-app/steps/01-hello-world/src/app/app.component.css_0_213 | :host {
--content-padding: 10px;
}
header {
display: block;
height: 60px;
padding: var(--content-padding);
box-shadow: 0px 5px 25px var(--shadow-color);
}
.content {
padding: var(--content-padding);
}
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"url": "https://github.com/angular/angular/blob/main/adev/src/content/tutorials/first-app/steps/01-hello-world/src/app/app.component.css"
} |
angular/adev/src/content/tutorials/first-app/steps/01-hello-world/src/assets/location-pin.svg_0_502 | <?xml version="1.0" encoding="UTF-8"?>
<svg width="20pt" height="20pt" version="1.1" viewBox="0 0 100 100" xmlns="http://www.w3.org/2000/svg">
<path d="m50 11.602c-15.398 0-27.898 12.5-27.898 27.898 0 5 1.3008 9.6992 3.6016 13.801l2.8984 4.1992 21.398 30.898 21.801-31.398 2.1992-3.1992c2.5-4.1992 3.8984-9 3.8984-14.199 0-15.5-12.5-28-27.898-28zm0 35.598c-4.1992 0-7.6992-3.3984-7.6992-7.6992s3.3984-7.6992 7.6992-7.6992 7.6992 3.3984 7.6992 7.6992-3.5 7.6992-7.6992 7.6992z" fill="#605cc8"/>
</svg>
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angular/adev/src/content/tutorials/first-app/steps/01-hello-world/src/assets/logo.svg_5629_6611 | 24.9789C139.658 24.6613 138.578 24.3331 137.731 23.9943C136.905 23.6555 136.185 23.1368 135.571 22.438C134.979 21.7393 134.682 20.797 134.682 19.6113C134.682 18.6373 134.957 17.748 135.508 16.9434C136.08 16.1387 136.884 15.5035 137.922 15.0377C138.98 14.5719 140.219 14.3389 141.638 14.3389C143.734 14.3389 145.407 14.8683 146.656 15.927C147.905 16.9645 148.593 18.3726 148.721 20.1512H144.465C144.401 19.4525 144.105 18.902 143.575 18.4996C143.067 18.0762 142.379 17.8644 141.511 17.8644C140.706 17.8644 140.081 18.0126 139.637 18.3091C139.213 18.6055 139.002 19.0184 139.002 19.5478C139.002 20.1406 139.298 20.5959 139.891 20.9135C140.484 21.2099 141.405 21.517 142.654 21.8346C143.925 22.1522 144.973 22.4804 145.798 22.8192C146.624 23.1579 147.334 23.6873 147.926 24.4072C148.541 25.106 148.858 26.0376 148.879 27.2022C148.879 28.2186 148.593 29.129 148.022 29.9337C147.471 30.7383 146.667 31.3735 145.608 31.8393C144.57 32.284 143.353 32.5063 141.955 32.5063Z" fill="#605DC8"/> | {
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angular/adev/src/content/tutorials/first-app/steps/01-hello-world/src/assets/logo.svg_6612_6619 | </svg>
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} |
angular/adev/src/content/tutorials/first-app/steps/07-dynamic-template-values/README.md_0_2965 | # Add an interpolation to a component’s template
This tutorial lesson demonstrates how to add interpolation to Angular templates in order to display dynamic data in a template.
<docs-video src="https://www.youtube.com/embed/eM3zi_n7lNs?si=IFAly3Ss8dwqFx8N&start=338"/>
## What you'll learn
- Your app will display interpolated values in the `HousingLocationComponent` template.
- Your app will render a housing location data to the browser.
## Conceptual preview of interpolation
In this step you will display values (properties and `Input` values) in a template using interpolation.
Using the `{{ expression }}` in Angular templates, you can render values from properties, `Inputs` and valid JavaScript expressions.
For a more in depth explanation, please refer to the [Displaying values with interpolation](guide/templates/binding#render-dynamic-text-with-text-interpolation) guide.
<docs-workflow>
<docs-step title="Update `HousingLocationComponent` template to include interpolated values">
This step adds new HTML structure and interpolated values in the `HousingLocationComponent` template.
In the code editor:
1. Navigate to `src/app/housing-location/housing-location.component.ts`
1. In the template property of the `@Component` decorator, replace the existing HTML markup with the following code:
<docs-code header="Update HousingLocationComponent template" path="adev/src/content/tutorials/first-app/steps/08-ngFor/src/app/housing-location/housing-location.component.ts" visibleLines="[9,20]"/>
In this updated template code you have used property binding to bind the `housingLocation.photo` to the `src` attribute. The `alt` attribute uses interpolation to give more context to the alt text of the image.
You use interpolation to include the values for `name`, `city` and `state` of the `housingLocation` property.
</docs-step>
<docs-step title="Confirm the changes render in the browser">
1. Save all changes.
1. Open the browser and confirm that the app renders the photo, city and state sample data.
<img alt="browser frame of homes-app displaying logo, filter text input box, search button and the same housing location UI card" src="assets/images/tutorials/first-app/homes-app-lesson-07-step-2.png">
</docs-step>
</docs-workflow>
Summary: In this lesson, you added a new HTML structure and used Angular template syntax to render values in the `HousingLocation` template.
Now, you have two important skills:
- passing data to components
- Interpolating values into a template
With these skills, your app can now share data and display dynamic values in the browser. Great work so far.
For more information about the topics covered in this lesson, visit:
<docs-pill-row>
<docs-pill href="guide/templates" title="Template syntax"/>
<docs-pill href="guide/templates/binding#render-dynamic-text-with-text-interpolation" title="Displaying values with interpolation"/>
</docs-pill-row>
| {
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"start_byte": 0,
"url": "https://github.com/angular/angular/blob/main/adev/src/content/tutorials/first-app/steps/07-dynamic-template-values/README.md"
} |
angular/adev/src/content/tutorials/first-app/steps/07-dynamic-template-values/src/index.html_0_427 | <!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>Homes</title>
<base href="/">
<meta name="viewport" content="width=device-width, initial-scale=1">
<link rel="icon" type="image/x-icon" href="favicon.ico">
<link href="https://fonts.googleapis.com/css2?family=Be+Vietnam+Pro:ital,wght@0,400;0,700;1,400;1,700&display=swap" rel="stylesheet">
</head>
<body>
<app-root></app-root>
</body>
</html>
| {
"end_byte": 427,
"start_byte": 0,
"url": "https://github.com/angular/angular/blob/main/adev/src/content/tutorials/first-app/steps/07-dynamic-template-values/src/index.html"
} |
angular/adev/src/content/tutorials/first-app/steps/07-dynamic-template-values/src/main.ts_0_420 | /*
* Protractor support is deprecated in Angular.
* Protractor is used in this example for compatibility with Angular documentation tools.
*/
import {bootstrapApplication, provideProtractorTestingSupport} from '@angular/platform-browser';
import {AppComponent} from './app/app.component';
bootstrapApplication(AppComponent, {providers: [provideProtractorTestingSupport()]}).catch((err) =>
console.error(err),
);
| {
"end_byte": 420,
"start_byte": 0,
"url": "https://github.com/angular/angular/blob/main/adev/src/content/tutorials/first-app/steps/07-dynamic-template-values/src/main.ts"
} |
angular/adev/src/content/tutorials/first-app/steps/07-dynamic-template-values/src/styles.css_0_443 | /* You can add global styles to this file, and also import other style files */
* {
margin: 0;
padding: 0;
}
body {
font-family: 'Be Vietnam Pro', sans-serif;
}
:root {
--primary-color: #605DC8;
--secondary-color: #8B89E6;
--accent-color: #e8e7fa;
--shadow-color: #E8E8E8;
}
button.primary {
padding: 10px;
border: solid 1px var(--primary-color);
background: var(--primary-color);
color: white;
border-radius: 8px;
}
| {
"end_byte": 443,
"start_byte": 0,
"url": "https://github.com/angular/angular/blob/main/adev/src/content/tutorials/first-app/steps/07-dynamic-template-values/src/styles.css"
} |
angular/adev/src/content/tutorials/first-app/steps/07-dynamic-template-values/src/app/housinglocation.ts_0_180 | export interface HousingLocation {
id: number;
name: string;
city: string;
state: string;
photo: string;
availableUnits: number;
wifi: boolean;
laundry: boolean;
}
| {
"end_byte": 180,
"start_byte": 0,
"url": "https://github.com/angular/angular/blob/main/adev/src/content/tutorials/first-app/steps/07-dynamic-template-values/src/app/housinglocation.ts"
} |
angular/adev/src/content/tutorials/first-app/steps/07-dynamic-template-values/src/app/app.component.ts_0_529 | import {Component} from '@angular/core';
import {HomeComponent} from './home/home.component';
@Component({
selector: 'app-root',
standalone: true,
imports: [HomeComponent],
template: `
<main>
<header class="brand-name">
<img class="brand-logo" src="/assets/logo.svg" alt="logo" aria-hidden="true" />
</header>
<section class="content">
<app-home></app-home>
</section>
</main>
`,
styleUrls: ['./app.component.css'],
})
export class AppComponent {
title = 'homes';
}
| {
"end_byte": 529,
"start_byte": 0,
"url": "https://github.com/angular/angular/blob/main/adev/src/content/tutorials/first-app/steps/07-dynamic-template-values/src/app/app.component.ts"
} |
angular/adev/src/content/tutorials/first-app/steps/07-dynamic-template-values/src/app/app.component.css_0_213 | :host {
--content-padding: 10px;
}
header {
display: block;
height: 60px;
padding: var(--content-padding);
box-shadow: 0px 5px 25px var(--shadow-color);
}
.content {
padding: var(--content-padding);
}
| {
"end_byte": 213,
"start_byte": 0,
"url": "https://github.com/angular/angular/blob/main/adev/src/content/tutorials/first-app/steps/07-dynamic-template-values/src/app/app.component.css"
} |
angular/adev/src/content/tutorials/first-app/steps/07-dynamic-template-values/src/app/home/home.component.ts_0_1046 | import {Component} from '@angular/core';
import {CommonModule} from '@angular/common';
import {HousingLocationComponent} from '../housing-location/housing-location.component';
import {HousingLocation} from '../housinglocation';
@Component({
selector: 'app-home',
standalone: true,
imports: [CommonModule, HousingLocationComponent],
template: `
<section>
<form>
<input type="text" placeholder="Filter by city" />
<button class="primary" type="button">Search</button>
</form>
</section>
<section class="results">
<app-housing-location [housingLocation]="housingLocation"></app-housing-location>
</section>
`,
styleUrls: ['./home.component.css'],
})
export class HomeComponent {
readonly baseUrl = 'https://angular.dev/assets/images/tutorials/common';
housingLocation: HousingLocation = {
id: 9999,
name: 'Test Home',
city: 'Test city',
state: 'ST',
photo: `${this.baseUrl}/example-house.jpg`,
availableUnits: 99,
wifi: true,
laundry: false,
};
}
| {
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"url": "https://github.com/angular/angular/blob/main/adev/src/content/tutorials/first-app/steps/07-dynamic-template-values/src/app/home/home.component.ts"
} |
angular/adev/src/content/tutorials/first-app/steps/07-dynamic-template-values/src/app/home/home.component.css_0_746 | .results {
display: grid;
column-gap: 14px;
row-gap: 14px;
grid-template-columns: repeat(auto-fill, minmax(400px, 400px));
margin-top: 50px;
justify-content: space-around;
}
input[type="text"] {
border: solid 1px var(--primary-color);
padding: 10px;
border-radius: 8px;
margin-right: 4px;
display: inline-block;
width: 30%;
}
button {
padding: 10px;
border: solid 1px var(--primary-color);
background: var(--primary-color);
color: white;
border-radius: 8px;
}
@media (min-width: 500px) and (max-width: 768px) {
.results {
grid-template-columns: repeat(2, 1fr);
}
input[type="text"] {
width: 70%;
}
}
@media (max-width: 499px) {
.results {
grid-template-columns: 1fr;
}
}
| {
"end_byte": 746,
"start_byte": 0,
"url": "https://github.com/angular/angular/blob/main/adev/src/content/tutorials/first-app/steps/07-dynamic-template-values/src/app/home/home.component.css"
} |
angular/adev/src/content/tutorials/first-app/steps/07-dynamic-template-values/src/app/housing-location/housing-location.component.css_0_583 | .listing {
background: var(--accent-color);
border-radius: 30px;
padding-bottom: 30px;
}
.listing-heading {
color: var(--primary-color);
padding: 10px 20px 0 20px;
}
.listing-photo {
height: 250px;
width: 100%;
object-fit: cover;
border-radius: 30px 30px 0 0;
}
.listing-location {
padding: 10px 20px 20px 20px;
}
.listing-location::before {
content: url("/assets/location-pin.svg") / "";
}
section.listing a {
padding-left: 20px;
text-decoration: none;
color: var(--primary-color);
}
section.listing a::after {
content: "\203A";
margin-left: 5px;
}
| {
"end_byte": 583,
"start_byte": 0,
"url": "https://github.com/angular/angular/blob/main/adev/src/content/tutorials/first-app/steps/07-dynamic-template-values/src/app/housing-location/housing-location.component.css"
} |
angular/adev/src/content/tutorials/first-app/steps/07-dynamic-template-values/src/app/housing-location/housing-location.component.ts_0_439 | import {Component, Input} from '@angular/core';
import {CommonModule} from '@angular/common';
import {HousingLocation} from '../housinglocation';
@Component({
selector: 'app-housing-location',
standalone: true,
imports: [CommonModule],
template: `
<p>housing-location works!</p>
`,
styleUrls: ['./housing-location.component.css'],
})
export class HousingLocationComponent {
@Input() housingLocation!: HousingLocation;
}
| {
"end_byte": 439,
"start_byte": 0,
"url": "https://github.com/angular/angular/blob/main/adev/src/content/tutorials/first-app/steps/07-dynamic-template-values/src/app/housing-location/housing-location.component.ts"
} |
angular/adev/src/content/tutorials/first-app/steps/07-dynamic-template-values/src/assets/location-pin.svg_0_502 | <?xml version="1.0" encoding="UTF-8"?>
<svg width="20pt" height="20pt" version="1.1" viewBox="0 0 100 100" xmlns="http://www.w3.org/2000/svg">
<path d="m50 11.602c-15.398 0-27.898 12.5-27.898 27.898 0 5 1.3008 9.6992 3.6016 13.801l2.8984 4.1992 21.398 30.898 21.801-31.398 2.1992-3.1992c2.5-4.1992 3.8984-9 3.8984-14.199 0-15.5-12.5-28-27.898-28zm0 35.598c-4.1992 0-7.6992-3.3984-7.6992-7.6992s3.3984-7.6992 7.6992-7.6992 7.6992 3.3984 7.6992 7.6992-3.5 7.6992-7.6992 7.6992z" fill="#605cc8"/>
</svg>
| {
"end_byte": 502,
"start_byte": 0,
"url": "https://github.com/angular/angular/blob/main/adev/src/content/tutorials/first-app/steps/07-dynamic-template-values/src/assets/location-pin.svg"
} |
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