Don't return posts with the same image in random view

boards/models/image.py

@@ -2,9 +2,12 b' import hashlib'
 import os
 from random import random
 import time
+
 from django.db import models
 from django.template.defaultfilters import filesizeformat
+
 from boards import thumbs
+import boards
 from boards.models.base import Viewable
 
 __author__ = 'neko259'
@@ -39,6 +42,9 b' class PostImageManager(models.Manager):'
             md5.update(chunk)
         return md5.hexdigest()
 
+    def get_random_images(self, count):
+        return self.order_by('?')[:count]
+
 
 class PostImage(models.Model, Viewable):
     objects = PostImageManager()
@@ -108,3 +114,7 b' class PostImage(models.Model, Viewable):'
                     str(self.hash), str(self.pre_width),
                     str(self.pre_height), str(self.width), str(self.height),
                     full=self.image.url, image_meta=metadata)
+
+    def get_random_associated_post(self):
+        return boards.models.Post.objects.filter(images__in=[self])\
+            .order_by('?').first()

boards/templates/boards/random.html

@@ -8,17 +8,17 b''
 
 {% block content %}
 
-    {% if posts %}
+    {% if images %}
         <div class="random-images-table">
             <div>
-            {% for post in posts %}
+            {% for image in images %}
                 <div class="gallery_image">
-                {% with post.get_first_image as image %}
                     {% autoescape off %}
                         {{ image.get_view }}
                     {% endautoescape %}
-                    <a href="{{ post.get_absolute_url }}">>>{{ post.id }}</a>
-                {% endwith %}
+                    {% with image.get_random_associated_post as post %}
+                        <a href="{{ post.get_absolute_url }}">>>{{ post.id }}</a>
+                    {% endwith %}
                 </div>
                 {% if forloop.counter|divisibleby:"3" %}
                 </div>

boards/views/random.py

@@ -1,16 +1,13 b''
 from django.shortcuts import render
-from django.template import RequestContext
 from django.views.generic import View
-from django.db.models import Count
 
-from boards.models import Post
-from boards.mdx_neboard import Parser
+from boards.models import PostImage
 
 __author__ = 'neko259'
 
 TEMPLATE = 'boards/random.html'
 
-CONTEXT_POSTS = 'posts'
+CONTEXT_IMAGES = 'images'
 
 RANDOM_POST_COUNT = 9
 
@@ -19,10 +16,7 b' class RandomImageView(View):'
     def get(self, request):
         params = dict()
 
-        posts = Post.objects.annotate(images_count=Count(
-            'images')).filter(images_count__gt=0).order_by('?')\
-                    [:RANDOM_POST_COUNT]
-
-        params[CONTEXT_POSTS] = posts
+        params[CONTEXT_IMAGES] = PostImage.objects.get_random_images(
+            RANDOM_POST_COUNT)
 
         return render(request, TEMPLATE, params)