Fixed resetting cache when the thread is bumped

boards/models/post/__init__.py

@@ -83,15 +83,13 b' class PostManager(models.Manager):'
             opening_posts = []
 
         posting_time = timezone.now()
+        new_thread = False
         if not thread:
             thread = boards.models.thread.Thread.objects.create(
                 bump_time=posting_time, last_edit_time=posting_time)
             list(map(thread.tags.add, tags))
             boards.models.thread.Thread.objects.process_oldest_threads()
-        else:
-            thread.last_edit_time = posting_time
-            thread.bump()
-            thread.save()
+            new_thread = True
 
         pre_text = Parser().preparse(text)
 
@@ -115,6 +113,12 b' class PostManager(models.Manager):'
         post.connect_threads(opening_posts)
         post.connect_notifications()
 
+        # Thread needs to be bumped only when the post is already created
+        if not new_thread:
+            thread.last_edit_time = posting_time
+            thread.bump()
+            thread.save()
+
         return post
 
     def delete_posts_by_ip(self, ip):

boards/utils.py

@@ -3,7 +3,6 b' This module contains helper functions an'
 """
 import time
 import hmac
-import functools
 
 from django.core.cache import cache
 from django.db.models import Model