How to abstract model methods to a separate class?

Hi,

I have a model along the lines below. I want to be able to define some urls that have a related structure to provide different views of my model. It would be nice to abstract the link generation using a class as these views have wider application.

class MyModel(models.Model):

    date = models.DateField()
    slug = models.SlugField()

    def link_self(self):
        return "%s/%s/" % (self.date.year, self.slug)

    def link_view1(self):
        return "%s%s/" % (self.link_self(), 'view1')

    def link_view2(self):
        return "%s%s/" % (self.link_self(), 'view2')

I have tried to do the following, but the django template did not interpret the methods of my class correctly.

class myLinksClass:
    basepath = 'testing/'

    def self(self):
        return "%s" % (self.basepath, )

    def view1(self):
        return "%s%s" % (self.basepath, 'view1', )

    def view2(self):
        return "%s%s" % (self.basepath, 'view2', )

class MyModel(models.Model):

    date = models.DateField()
    slug = models.SlugField()

    def links(self):
        thelinks = myLinksClass
        return thelinks

Any advice on how to get the template to interpret the methods of myLinksClass?
Thanks,
R.

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