posts sorted by public date or event start depend on post type

fet2020/posts/managers.py

@@ -12,6 +12,19 @@ class PostManager(models.Manager):
     def get_visible_articles(self):
         return self.get_queryset().filter(is_hidden=False)
 
+    def get_date_sorted_list(self):
+        post_list = []
+        for post in self.get_visible_articles():
+            if post.post_type != "N":
+                post_list.append((post, post.event_start.date()))
+            else:
+                post_list.append((post, post.public_date))
+
+        result = sorted(post_list, key=lambda x: x[1], reverse=True)
+        posts = [x[0] for x in result]
+
+        return posts
+
     def get_last_months_posts(self):
         date_today = timezone.now().date()
         return self.get_visible_articles().filter(
@@ -43,6 +56,19 @@ class ArticleManager(models.Manager):
     def get_visible_articles(self):
         return self.get_queryset().filter(is_hidden=False)
 
+    def get_date_sorted_list(self):
+        post_list = []
+        for post in self.get_visible_articles():
+            if post.post_type != "N":
+                post_list.append((post, post.event_start.date()))
+            else:
+                post_list.append((post, post.public_date))
+
+        result = sorted(post_list, key=lambda x: x[1], reverse=True)
+        posts = [x[0] for x in result]
+
+        return posts
+
     def get_pinned_article(self):
         return self.get_visible_articles().filter(is_pinned=True).first()