ปกป้องปลายทางด้วย jwt_required

A token is only useful if some routes demand it. The jwt_required decorator turns any view into a members-only endpoint. 🔒

Stack @jwt_required() under your route. Now the view only runs when a valid, unexpired token arrives.

Clients send the token in the Authorization header using the Bearer scheme. Flask-JWT-Extended reads it from there automatically.

No token, or a bad one? The decorator stops the request before your code runs and returns a 401. You write zero checking logic.

Inside a guarded view, call get_jwt_identity to read the identity you signed at login, usually the user id.

Need extra claims like a role? get_jwt returns the whole payload as a dict so you can branch on what is inside.

With the user id in hand, load that user and serve their data. The token told you who, so the rest is normal Flask. 🙂

Want a page that adapts whether or not someone is logged in? Use optional=True so the view runs either way.

Register an unauthorized_loader to return a friendly JSON message instead of the default when a token is missing.

An expired token is also rejected by the decorator. The client must log in again or refresh to keep going, which keeps stolen tokens short-lived.

Read the caller from the token, never from a user id in the request body. The signature is what makes the identity trustworthy.

Recall how a guarded view learns who is calling.

Add @jwt_required() to guard a route, send the token as a Bearer header, and read the caller with get_jwt_identity. 🔐