Removed unecessary connection of a thread to its replies, cause posts are

already connected to the thread by foreign key

boards/migrations/0005_remove_thread_replies.py

@@ -0,0 +1,18 b''
+# -*- coding: utf-8 -*-
+from __future__ import unicode_literals
+
+from django.db import models, migrations
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('boards', '0004_tag_required'),
+    ]
+
+    operations = [
+        migrations.RemoveField(
+            model_name='thread',
+            name='replies',
+        ),
+    ]

boards/models/post.py

@@ -14,7 +14,6 b' from boards import settings'
 from boards.mdx_neboard import bbcode_extended
 from boards.models import PostImage
 from boards.models.base import Viewable
-from boards.models.thread import Thread
 from boards.utils import datetime_to_epoch, cached_result
 
 
@@ -111,7 +110,6 b' class PostManager(models.Manager):'
                             post_image.id, post.id))
             post.images.add(post_image)
 
-        thread.replies.add(post)
         list(map(thread.add_tag, tags))
 
         if new_thread:
@@ -295,7 +293,7 b' class Post(models.Model, Viewable):'
 
         return link
 
-    def get_thread(self) -> Thread:
+    def get_thread(self):
         """
         Gets post's thread.
         """

boards/models/thread.py

@@ -6,6 +6,7 b' from django.db import models'
 
 from boards import settings
 from boards.utils import cached_result
+from boards.models.post import Post
 
 
 __author__ = 'neko259'
@@ -52,8 +53,6 b' class Thread(models.Model):'
     tags = models.ManyToManyField('Tag')
     bump_time = models.DateTimeField()
     last_edit_time = models.DateTimeField()
-    replies = models.ManyToManyField('Post', symmetrical=False, null=True,
-                                     blank=True, related_name='tre+')
     archived = models.BooleanField(default=False)
     bumpable = models.BooleanField(default=True)
 
@@ -78,10 +77,10 b' class Thread(models.Model):'
             logger.info('Bumped thread %d' % self.id)
 
     def get_reply_count(self):
-        return self.replies.count()
+        return self.get_replies().count()
 
     def get_images_count(self):
-        return self.replies.annotate(images_count=Count(
+        return self.get_replies().annotate(images_count=Count(
                 'images')).aggregate(Sum('images_count'))['images_count__sum']
 
     def can_bump(self):
@@ -121,7 +120,8 b' class Thread(models.Model):'
         Gets sorted thread posts
         """
 
-        query = self.replies.order_by('pub_time').prefetch_related('images')
+        query = Post.objects.filter(thread_new=self)
+        query = query.order_by('pub_time').prefetch_related('images')
         if view_fields_only:
             query = query.defer('poster_user_agent')
         return query.all()
@@ -146,7 +146,7 b' class Thread(models.Model):'
         Gets the first post of the thread
         """
 
-        query = self.replies.order_by('pub_time')
+        query = self.get_replies().order_by('pub_time')
         if only_id:
             query = query.only('id')
         opening_post = query.first()