Require a user to be a member of a specific group to visit a view

gistfile1.py

def require_group(group_name):
    def wrapper(user):
        return user.groups.filter(name=group_name).exists()
    return wrapper


@user_passes_test(require_group('Group 1'))
def view1(request):
    # ...


@user_passes_test(require_group('Group 2'))
def view2(request):
    # ...