How could I have a singleton view for the new Django Form Wizard?

I am working with the new Django Form Wizard tool. It will be released in the next Django 1.4, but you can find it here: https://github.com/stephrdev/django-formwizard

I would like to have a singleton view class for all the wizard process.

This is my code:

class submit(object):
    instance = None 

    def __new__(cls, request, *args, **kwargs):
        if not cls.instance:
            cls.instance = super(submit, cls).__new__(cls)
            cls.form     = SubmitStoryWizard.as_view([SubmitStoryForm1, SubmitStoryForm2, SubmitStoryForm3, SubmitStoryForm4])
        re开发者_StackOverflowturn cls.instance(request, *args, **kwargs)

    def __init__(self):
        pass

    def __call__(self, request, *args, **kwargs):
        return self.form(request)

The problem is that WizardView inherits from TemplateView so the as_view method returns a function. So, in the line:

cls.form     = SubmitStoryWizard.as_view([SubmitStoryForm1, SubmitStoryForm2, SubmitStoryForm3, SubmitStoryForm4])

It's like I was storing in a class variable a function. So, in the __call__ method, when I call to self.form function, Python automatically add as the first parameter a reference of the class. This is what I do not want.

How could I resolve it? Any ideas?

Sorry for my english :S

Thanks in advance,

Greetings!

Interesting issue. I haven't tested, but this modification should work:

from:

    cls.form     = SubmitStoryWizard.as_view([SubmitStoryForm1, SubmitStoryForm2, SubmitStoryForm3, SubmitStoryForm4])

to:

    cls.form     = staticmethod(SubmitStoryWizard.as_view([SubmitStoryForm1, SubmitStoryForm2, SubmitStoryForm3, SubmitStoryForm4]))