Add get_post_relative_link template tag to generate relative links to blog posts

blog/templatetags/blog_link.py

@@ -1,8 +1,15 @@
 from django import template
 from django.core.urlresolvers import reverse
+from django.conf import settings
+import pytz
 
 register = template.Library()
 
+@register.simple_tag
+def get_post_relative_link(post):
+    post_date = post.created_at.astimezone(pytz.timezone(settings.TIME_ZONE))
+    return reverse('blog:read', args=(post_date.year, post_date.month, post_date.day, post.slug))
+
 @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)))