fix 'res not defined'

backend/models/alexa.js

@@ -2,22 +2,22 @@ var Alexa = require ('alexa-sdk');
 const config = require ('../config/config');
 var databaseHelper = require ('../helpers/database');
 
-// Build the context manually, because Amazon Lambda is missing
-var context = {
-  succeed: function (result) {
-    console.log (result);
-    res.json (result);
-  },
-  fail: function (error) {
-    console.log (error);
-    //We could send error json from here
-  },
-};
-
 var handlers = {};
 
 module.exports = {
   run: function (req, res) {
+    // Build the context manually, because Amazon Lambda is missing
+    var context = {
+      succeed: function (result) {
+        console.log (result);
+        res.json (result);
+      },
+      fail: function (error) {
+        console.log (error);
+        //We could send error json from here
+      },
+    };
+
     var alexa = Alexa.handler (req.body, context);
     alexa.appId = config.SKILL_ID;
     alexa.registerHandlers (handlers);