Add get_post_link template tag to create post backlinks

blog/templatetags/blog_link.py

@@ -0,0 +1,8 @@
+from django import template
+from django.core.urlresolvers import reverse
+
+register = template.Library()
+
+@register.simple_tag(takes_context = True)
+def get_post_link(context, post):
+    return context['request'].build_absolute_uri(reverse('blog:read', args=(post.created_at.year, post.created_at.month, post.created_at.day, post.slug)))