如何在Doctrine 1.2中设置用于通过表映射的关系？

Question

Tables:

tbl_user(id, name)
tbl_group(id, name);
tbl_user_group(user_id, group_id);

If there were all three classes generated User,Group,UserGroup . How should i setup the relations in User or Group so that they are mapped through the user_group table?

I'm using Doctrine 1.2

Answer 1

It's up to you to define their associations, purely because only you will know how you want your application to work. Can a user have more than one group? Only one? If a group is deleted, will all associated users be deleted? These are the questions you need to ask yourself.

If you follow the example on Doctrine's documentation for Many-to-Many relationships (which coincidentally covers exactly what you need), you'll get there.