Q:

Link tables with extra column in Symfony 2 / Doctrine

In a database I have the tables User, Group and UsersInGroup and generate the entities from the database using the Symfony 2 console.  The table UsersInGroup is not generated as an entity but is partly generated into User and Group.  This would be perfect if UsersInGroup hat only two columns userId and groupId (together primarykey), in this case the table UsersInGroup also contains a third column Role.  This field is can never be filled using the generated entities
How should I fill the Role column in the tabel UsersInGroup? 

A:

You have to declare your relation table manually and to map the relations. 
You'll find an interesting discussion here:
Doctrine2: Best way to handle many-to-many with extra columns in reference table

