How to inject variable into scope with a decorator?

Question

[Disclaimer: there may be more pythonic ways of doing what I want to do, but I want to know how python\'s scoping works here]

I\'m trying to find a way to make a dec

Answer 1

I have catched problem with solution using globals.

Context of globals may be overwritten when you have several concurrent requests. I thought that impossible, but it is - after some time I have catched change of context(globals) if request wasn't quick. Better solution is to pass variable using kwargs:

def is_login(old_fuction):
    def new_function(request, *args, **kwargs):
        secret_token = request.COOKIES.get('secret_token')
        if secret_token:
            items = SomeModel.objects.get(cookie = secret_token)
            if len(items) > 0:
                item = items[0]
                kwargs['current_user'] = item
                return old_fuction(request, *args, **kwargs)
            else:
                return HttpResponse('error')
        return HttpResponse(status=404)
    return new_function

@is_login  
def some_func(request, current_user):
    return HttpResponse(current_user.name)

You'll have to add extra parameter to each decorated function.