closes #3062

src/categories.js

@@ -241,6 +241,7 @@ var async = require('async'),
 					categories[i]['unread-class'] = (parseInt(categories[i].topic_count, 10) === 0 || (hasRead[i] && uid !== 0)) ? '' : 'unread';
 					categories[i].children = results.children[i];
 					categories[i].parent = results.parents[i] && !results.parents[i].disabled ? results.parents[i] : null;
+					calculateTopicPostCount(categories[i]);
 				}
 			}
 
@@ -248,6 +249,17 @@ var async = require('async'),
 		});
 	};
 
+	function calculateTopicPostCount(category) {
+		if (!Array.isArray(category.children) || !category.children.length) {
+			return;
+		}
+
+		category.children.forEach(function(child) {
+		});
+		category.post_count = postCount;
+		category.topic_count = topicCount;
+	}
+
 	Categories.getParents = function(cids, callback) {
 		Categories.getMultipleCategoryFields(cids, ['parentCid'], function(err, data) {
 			if (err) {