降级字段判断用lodash

 'use strict';
 
 const mRoot = '../models';
+const _ = require('lodash');
 const recommendForYouModel = require(`${mRoot}/recommend-for-you`); // 领取优惠券 model
 
 exports.userCenter = (req, res, next) => {
@@ -33,7 +34,7 @@ exports.cart = (req, res, next) => {
         uid = req.user.uid || 0,
         yhChannel = req.query.yh_channel || '1',
         limit = 30;
-    if (req.app.locals.wap.cart.removePrefer) {
+    if (_.get(req, 'app.locals.wap.cart.removePrefer', false)) {
         return res.send(''); 
     }
     recommendForYouModel.getPreference({

@@ -133,7 +133,7 @@ const list = (req, res, next) => {
 const index = (req, res, next) => {
     let title = '搜索';
     ((render) => {
-        if (req.app.locals.wap.search.removeHotSearch) {
+        if (_.get(req, 'app.locals.wap.search.removeHotSearch', false)) {
             render([]);
         } else {
             searchModel.getSearchIndex().then((result) => {