Best practices using not existing createAccessDeniedException method in controller.

[amansilla]

In the following sites there is an use of the createAccessDeniedException method that was not introduced into symfony until version 2.5.

The documentation for versions 2.3 and 2.4 are wrong.

• http://symfony.com/doc/2.3/best_practices/security.html#manually-checking-permissions
• http://symfony.com/doc/2.4/best_practices/security.html#manually-checking-permissions

[wouterj]

And this is fixed now 🎉