Django Admin - remove permissions from the list on Add/Edit Group page

Question

I am using Django 1.8.1. This is first time I am customizing the admin screens.

There are some permissions coming by default in the list like admin|entry log, auth|group etc. I wanted to remove those permissions from the list. I was able to filter those permissions out from the list on the user edit screen with the help of Django admin - change permissions list

My problem is add/edit group screen. On this screen those permission are still there. Following is the screen shot of the page.

How can I remove some of the permissions from this list ?

Answer 1

I tried to do this by extending the GroupAdmin class and overriding the get_form method. But unfortunately that didn't worked for me. The get_form method was not getting invoked at all. I don't know the reason.

Following solved my problem:

class MyGroupAdminForm(forms.ModelForm):

    class Meta:
        model = Group
        fields = ('name', 'permissions')

    permissions = forms.ModelMultipleChoiceField(
        Permission.objects.exclude(content_type__app_label__in=['auth','admin','sessions','users','contenttypes']),
        widget=admin.widgets.FilteredSelectMultiple(_('permissions'), False))

class MyGroupAdmin(admin.ModelAdmin):
    form = MyGroupAdminForm
    search_fields = ('name',)
    ordering = ('name',)

admin.site.unregister(Group)
admin.site.register(Group, MyGroupAdmin)

With the above code I got success to remove the permissions for apps [auth, admin, sessions, users, contenttypes] from the available permissions list on the add/edit group screen.