menu: filter the last topics viewable by user (fix #101)

app/processors/menu.py

@@ -1,3 +1,4 @@
+from flask_login import current_user
 from app import app, db
 from app.forms.login import LoginForm
 from app.forms.search import SearchForm
@@ -5,6 +6,7 @@ from app.models.forum import Forum
 from app.models.topic import Topic
 
 
+
 @app.context_processor
 def menu_processor():
     """ All items used to render main menu. Includes search form """
@@ -19,8 +21,16 @@ def menu_processor():
         INNER JOIN post ON post.id = comment.id
         GROUP BY topic.id
         ORDER BY MAX(post.date_created) DESC
-        LIMIT 10;""")
+        LIMIT 20;""")
     last_active_topics = [Topic.query.get(id) for id in raw]
 
+    # Filter the topics the user can view and limit to 10
+    if current_user.is_authenticated:
+        f = lambda t: current_user.can_access_forum(t.forum)
+    else:
+        f = lambda t: t.forum.is_default_accessible()
+
+    last_active_topics = list(filter(f, last_active_topics))[:10]
+
     return dict(login_form=login_form, search_form=search_form,
         main_forum=main_forum, last_active_topics=last_active_topics)