Backend development with Flask: Using Flask's app factory pattern (+22, -18)

            
                
            
            index ec0910f..05fde93 100644
--- a/curriculum/section07/lectures/16_flask_app_factory_pattern/start/app.py
+++ b/curriculum/section07/lectures/16_flask_app_factory_pattern/end/app.py
@@ -7,24 +7,28 @@ from dotenv import load_dotenv
 load_dotenv()
 
 
-app = Flask(__name__)
-client = MongoClient(os.getenv("MONGODB_URI"))
-app.db = client.microblog
+def create_app():
+    app = Flask(__name__)
+    client = MongoClient(os.getenv("MONGODB_URI"))
+    app.db = client.microblog
 
+    @app.route("/", methods=["GET", "POST"])
+    def home():
+        if request.method == "POST":
+            entry_content = request.form.get("content")
+            formatted_date = datetime.datetime.today().strftime("%Y-%m-%d")
+            app.db.entries.insert_one(
+                {"content": entry_content, "date": formatted_date}
+            )
 
-@app.route("/", methods=["GET", "POST"])
-def home():
-    if request.method == "POST":
-        entry_content = request.form.get("content")
-        formatted_date = datetime.datetime.today().strftime("%Y-%m-%d")
-        app.db.entries.insert_one({"content": entry_content, "date": formatted_date})
+        entries_with_date = [
+            (
+                entry["content"],
+                entry["date"],
+                datetime.datetime.strptime(entry["date"], "%Y-%m-%d").strftime("%b %d"),
+            )
+            for entry in app.db.entries.find({})
+        ]
+        return render_template("home.html", entries=entries_with_date)
 
-    entries_with_date = [
-        (
-            entry["content"],
-            entry["date"],
-            datetime.datetime.strptime(entry["date"], "%Y-%m-%d").strftime("%b %d"),
-        )
-        for entry in app.db.entries.find({})
-    ]
-    return render_template("home.html", entries=entries_with_date)
+    return app