Function decorators with parameters on a class based view in Django

Question

The official documentation explains how to decorate a class based view, however I could not find any information on how to provide parameters to the decorator.

I would like to achieve something like

class MyView(View):
    @method_decorator(mydecorator, some_parameters)
    def dispatch(self, *args, **kwargs):
        return super(MyView, self).dispatch(*args, **kwargs)

which should be equivalent to

@mydecorator(some_parameters)
def my_view(request):
    ....

How do I deal with such cases?

Answer 1

@method_decorator takes a function as parameter. If you want to pass a decorator with parameters, you only need to:

• Evaluate the parameters in the decorator-creator function.
• Pass the evaluated value to @method_decorator.

In explicit Python code this would be:

decorator = mydecorator(arg1, arg2, arg...)
method_dec = method_decorator(decorator)

class MyClass(View):
    @method_dec
    def my_view(request):
        ...

So, using the syntactic sugar completely:

class MyClass(View):
    @method_decorator(mydecorator(arg1, arg2, arg...))
    def my_view(request):
        ...