帮助，协议，报错页面

@@ -65,7 +65,7 @@ const about = (req, res, next) => {
         width750: true
     };
 
-    aboutModel.about(req.yoho.isApp).then(result => {
+    req.ctx(aboutModel).about(req.yoho.isApp).then(result => {
         res.render('agreement/about', Object.assign(responseData, {wxFooter: result}));
     }).catch(next);
 };

@@ -2,25 +2,29 @@
 
 const api = global.yoho.API;
 
-const about = (isApp) => {
-    return api.get('', {
-        method: 'app.document.config'
-    }, {
-        cache: true,
-        code: 200
-    }).then(result => {
-        if (result && result.data) {
-            result = {
-                wxTitle: result.data.wechatAtten,
-                wxTip: result.data.wechatAttenSub,
-                wxCopy: result.data.wechatCopy,
-                isApp: isApp
-            };
-        }
-        return result;
-    });
-};
+class aboutModel extends global.yoho.BaseModel {
+    constructor(ctx) {
+        super(ctx);
+    }
 
-module.exports = {
-    about
-};
+    about(isApp) {
+        return api.get('', {
+            method: 'app.document.config'
+        }, {
+            cache: true,
+            code: 200
+        }).then(result => {
+            if (result && result.data) {
+                result = {
+                    wxTitle: result.data.wechatAtten,
+                    wxTip: result.data.wechatAttenSub,
+                    wxCopy: result.data.wechatCopy,
+                    isApp: isApp
+                };
+            }
+            return result;
+        });
+    }
+}
+
+module.exports = aboutModel;