Django sitemap various links for same model

I created sitemap for my website in Django as below

sitemap

class MyModelSitemap(Sitemap):
    changefreq = "daily"
    priority = 0.5

    def items(self):
        return MyModel.objects.all()

    def lastmod(self, obj):
        return datetime.datetime.today()

urls.py

sitemaps = {
    'mymodel': MyModelSitemap,
    }

get_absolute_link() is also implemented for MyModel

The problem there are many other URLs that uses MyModel so it's not possible to have only one absolute_link for it.

I need to provide many other URLs to sitemap depending on different queries of MyModel.

How can I achieve this?

The easy way is to create additional sitemaps:

class MyModelAdditionalLinkSitemap(MyModelSitemap):
    def location(self, obj):
        return obj.get_additional_link()

urls.py

sitemaps = {
    'mymodel': MyModelSitemap,
    'mymodel2': MyModelAdditionalLinkSitemap
}

Added:

I you want to use just one Sitemap class, try something like:

import itertools

class MyModelSitemap(Sitemap):
    changefreq = "daily"
    priority = 0.5

    def items(self):
        product = itertools.product(MyModel.objects.all(), xrange(2))
        return list(product)

    def location(self, obj):
        if (obj[1] == 1):
            return obj[0].get_additional_link()
        return obj[0].get_absolute_link()

    def lastmod(self, obj):
        return datetime.datetime.today()