Is there a way to pass variables to decorator?

I have log in system开发者_JS百科, based on OpenID provider, and I want to create decorator like @login_required. But I have a problem - I need to check permission per object. I pass id to my views, so I want to know is there any way to pass it to decorator or it's impossible and I need to check users permission in my view.

def outer(var1, var2):
    def inner(func)
        func.foo = var1
        func.bar = var2
        return func
    return inner

@outer(myvar1, myvar2)
def myfunc():
    # whatever
    pass

While you can't pass variables directly to the function which decorates your function, you can create another function (outer) that, when called, returns the decorating function (inner). You pass the outer function variables, and they are available to the inner function. This is called a closure.

Depending on when you need to do the stuff with the id you may need two levels of wrapping where you replace print(permission_id) with whatever it is you need to do before the method is called:

def login_required(permission_id):
    def decorator(func):
        def method(self, *args, **kw):
            print(permission_id)
            return func(self, *args, **kw)
        return method
    return decorator

class foo(object):

    @login_required('foo')
    def bar(self):
        print('bar')

foo = foo()
print('instantiated')
foo.bar()

Outputs:

instantiated
foo
bar