Added thread bumping.

boards/models.py

@@ -19,12 +19,18 b' class PostManager(models.Manager):'
                            parent=parent_id,
                            image=image,
                            poster_ip=ip,
-                           poster_user_agent=UNKNOWN_UA)
+                           poster_user_agent=UNKNOWN_UA,
+                           last_edit_time=timezone.now())
 
         if tags:
             for tag in tags:
                 post.tags.add(tag)
 
+        if parent_id != NO_PARENT:
+            parent = self.get(id=parent_id)
+            parent.last_edit_time=timezone.now()
+            parent.save()
+
         return post
 
     def delete_post(self, post):
@@ -43,6 +49,7 b' class PostManager(models.Manager):'
             threads = self.filter(parent=NO_PARENT)
         else:
             threads = self.filter(parent=NO_PARENT, tag=tag)
+        threads = list(threads.order_by('-last_edit_time'))
 
         return threads
 
@@ -84,6 +91,7 b' class Post(models.Model):'
     poster_user_agent = models.TextField()
     parent = models.BigIntegerField()
     tags = models.ManyToManyField(Tag)
+    last_edit_time = models.DateTimeField()
 
     def __unicode__(self):
         return self.title + ' (' + self.text + ')'