1:m and m:m relations: give some information about the associated elements in the backend list

I have created a m开发者_StackOverflow中文版odule using the sfGuardUser model. I'd like to show in the list of the backend of that module, the groups that a user belongs to.

I know the backend is not initially prepared for that, but is there any plugin or any other way to do "easily"?

sf 1.4/propel 1.6

Javier

Did you try creating a getter like getGroupList(), that returns them as a comma-separated list, and adding it as a column to the admin generator?