from django.shortcuts import get_object_or_404

from django.core.urlresolvers import reverse
from django.contrib.syndication.views import Feed

class LatestEntriesFeed(Feed):
    def get_object(self, request, *args, **kwargs):
        self.object = get_object_or_404(Blog, slug=kwargs['slug'])

    def title(self):
        return self.object.title

    def description(self):
        return self.object.description

    def link(self):
        return reverse('blogs:blogpost-feed', kwargs={'slug': self.object.slug})

    def items(self):
        queryset = BlogPost.objects.filter(blog=self.object).order_by('-created')
        return queryset[:5]

    def item_title(self, item):
        return item.title

    def item_description(self, item):
        return item.description


    url(
        regex=r'^(?P<slug>[^/]+)/feed.xml$',
        view=views.LatestEntriesFeed(),
        name='blogpost-feed'
    ),


<a href="{% url "blogs:blogpost-feed" slug=blog.slug %}"><img src='/static/images/Feed-icon.svg'></img></a>