Convert single dictionary to list of dictionaries in vectorize function for consistent DataFrame creation

controllers/vectorizer.py

@@ -40,6 +40,9 @@ def vectorize(article):
     print(article)
     print(type(article))
     article['id'] = str(article['id'])
+    # df = pd.DataFrame(article)
+    if isinstance(article, dict):
+        article = [article]  # Convert single dictionary to list of dictionaries
     df = pd.DataFrame(article)
     df = df[['id','site','title','titleCN','category','author','content',
              'publishDate','link']]