How to Build a JSON Authentication Endpoint

..tip::

If you are storing users in some sort of a database, then you should consider

using `FOSUserBundle`_, which helps you build your ``User`` object and gives

you many routes and controllers for common tasks like login, registration and

forgot password.

In this entry, you'll build a JSON endpoint to log in your users. Of course, when the

user logs in, you can load your users from anywhere - like the database.

See:ref:`security-user-providers` for details.