forum: fix index

app/templates/forum/index.html

@@ -25,13 +25,13 @@
 
 				{% if l1.sub_forums == [] %}
 					<tr><td><a href='/forum{{ l1.url }}'>{{ l1.name }}</a></td>
-							<td>{{ l1.topics | length }}</td></tr>
+							<td>{{ l1.topics.count() }}</td></tr>
 					<tr><td>{{ l1.descr }}</td><td></td></tr>
 				{% endif %}
 
 				{% for l2 in l1.sub_forums %}
 					<tr><td><a href='/forum{{ l2.url }}'>{{ l2.name }}</td>
-							<td>{{ l2.topics | length }}</td></tr>
+							<td>{{ l2.topics.count() }}</td></tr>
 					<tr><td>{{ l2.descr }}</td><td></td></tr>
 				{% endfor %}