update

app/service/forumCommentService.js

@@ -210,7 +210,7 @@ exports.getAllCommentWithThreeeChildrenComment = function(conditions, pageNo, pa
                 path: 'comments',
                 options: {
                     limit: 3,
-                    sort: '_id',
+                    sort: '-_id',
                     populate:'from to'
                 }
             }).limit(limit).skip(skip).sort('-created').exec(function(err, docs) {
@@ -738,7 +738,7 @@ exports.getAllComment_allstatus_v2 = function(conditions, pageNo, pageSize, call
                 path: 'comments',
                 options: {
                     limit: 3,
-                    sort: '_id',
+                    sort: '-_id',
                     populate:'from to'
                 }
             }).populate('to','uid mid nickName icon exp').limit(limit).skip(skip).sort('-created').exec(function(err, docs) {
@@ -815,7 +815,7 @@ exports.getCommentByIdWhitChirdentComment = function(conditions, pageNo, pageSiz
         options: {
             skip: skip,
             limit: limit,
-            sort: '_id',
+            sort: '-_id',
             populate:'from to'
         }
     }).exec(function(err, doc) {