title: symfony: difference between doctrine model "User" and symfony "myUser"?
body: <p>what is the difference between the symfony "myUser" and doctrine model "User"?</p>
  
  <p>where should i put the methods for an user?</p>
  
  <p>eg. $user->createThread(), $user->deleteThread() and so on</p>
  
  <p>should $user be an instance of the doctrine model User (cause i have a table called User) or the myUser that extends sfBasicSecurityUser?</p>
  
  <p>thanks!</p>