symfony/symfony — pull request #4771 by bschussek (2012-07-06 15:14:05+00:00)
Title: [Form] Made requirements for data mappers stricter

Bug fix: no
Feature addition: no
Backwards compatibility break: (yes)
Symfony2 tests pass: yes
Fixes the following tickets: -
Todo: -

This cleanup was done while trying to fix #4715, which is not easily fixable right now. It breaks BC for those people who do not extend `FormType` and manually construct `Form` instances, which hopefully nobody does as it is absolutely *not* recommended at this time.