def template_callable(func):   
    class GetAttrCaller(object):
        def __init__(self, instance):
            self.instance = instance
        def __getattr__(self, name):
            return func(self.instance, name)
        # Would cause Django to think this is a method, even through templates
        #def __call__(self, *args, **kwargs):
        #    return func(self, *args, **kwargs)
    class TemplateCallableDescriptor(object):
        def __get__(self, instance, klass):
            return GetAttrCaller(instance)
    return TemplateCallableDescriptor()