Assign User-objects to a Group while editing Group-object in Django admin

Question

In the default Django admin view for user-object (edit user) one can edit the user\'s group memberships. What if I wanted this the other way around also? I.e. in the group e

Answer 1

The save method above won't work if you add a new group and simultaneously add users to the group. The problem is that the new group won't get saved (the admin uses commit=False) and won't have a primary key. Since the purpose of save_m2m() is to allow the calling view to handle saving m2m objects, I made a save object that wraps the old save_m2m method in a new method.

def save(self, commit=True):
    group = super(GroupAdminForm, self).save(commit=commit)

    if commit:
        group.user_set = self.cleaned_data['users']
    else:
        old_save_m2m = self.save_m2m
        def new_save_m2m():
            old_save_m2m()
            group.user_set = self.cleaned_data['users']
        self.save_m2m = new_save_m2m
    return group