urls.py

def custom_create(request, *args, **kwargs):
    ''' update __init__ of the form class to use current user as initial '''
    form_class = kwargs['form_class']

    class custom_class(form_class):
        def __init__(self, *args, **kwargs):
            kwargs['initial'] = {'user': request.user.id}
            return super(custom_class, self).__init__(*args, **kwargs)

    kwargs['form_class'] = custom_class 
    return create_update.create_object(request, *args, **kwargs)