Quick Django Class Based View Decorator

The recommended way to add decorators such as login_required to class based views in Django is a bit verbose. Here’s a little metaclass-producing function you may find handy:

def DecoratedDispatchMethod(actual_decorator):
    """
    If you want to decorate the Class-based View with, say, login_required,
    the recommended way is this:

        @method_decorator(login_required)
        def dispatch(self, *args, **kwargs):
            return super(MyProtectedView, self).dispatch(*args, **kwargs)

    To avoid the need of writing this ugly code again and again, one can use
    this as a metaclass of the class that needs to be protected with a decorator.

        class MyProtectedView(...):
            __metaclass__ = DecoratedDispatchMethod(login_required)
            ...
    """
    class CBVMetaclass(type):
        def __init__(cls, name, bases, attrs):
            type.__init__(cls, name, bases, attrs)
            cls.dispatch = method_decorator(actual_decorator)(cls.dispatch)
    return CBVMetaclass

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