title: CakePHP 2.0 can't access Model from its own Controller
body: <p>I'm still trying to migrate from CakePHP 1.3 to 2.0</p>
  
  <p>I have a Controller UsersController and its Model User.
  The class User has some constants which I could easily access from the UsersController using User::constant. But for CakePHP 2.0 it doesn't work: I get an error saying the User class is not found. It works if I <code>App::Import('Model', 'User');</code>.</p>