Handle callback errors for user, bonfire, challenges,

courseware, and resources controllers

controllers/courseware.js

@@ -14,7 +14,7 @@ exports.coursewareNames = function(req, res) {
     });
 };
 
-exports.returnNextCourseware = function(req, res) {
+exports.returnNextCourseware = function(req, res, next) {
     if (!req.user) {
         return res.redirect('../coursewares/start-our-challenges');
     }
@@ -27,14 +27,16 @@ exports.returnNextCourseware = function(req, res) {
             return elem;
         }
     });
-    req.user.save();
+    req.user.save(function(err) {
+        if (err) return next(err);
+    });
 
     var uncompletedCoursewares = req.user.uncompletedCoursewares;
 
     var displayedCoursewares =  Courseware.find({'_id': uncompletedCoursewares[0]});
     displayedCoursewares.exec(function(err, courseware) {
         if (err) {
-            next(err);
+            return next(err);
         }
         courseware = courseware.pop();
         if (courseware === undefined) {
@@ -55,7 +57,7 @@ exports.returnIndividualCourseware = function(req, res, next) {
 
     Courseware.find({"name" : new RegExp(coursewareName, 'i')}, function(err, courseware) {
         if (err) {
-            next(err);
+            return next(err);
         }
         // Handle not found
         if (courseware.length < 1) {
@@ -203,7 +205,7 @@ exports.generateChallenge = function(req, res) {
     res.send(response);
 };
 
-exports.completedCourseware = function (req, res) {
+exports.completedCourseware = function (req, res, next) {
 
     var isCompletedDate = Math.round(+new Date() / 1000);
     var coursewareHash = req.body.coursewareInfo.coursewareHash;
@@ -221,10 +223,10 @@ exports.completedCourseware = function (req, res) {
 
     req.user.save(function (err, user) {
         if (err) {
-            throw err;
+            return next(err);
         }
         if (user) {
             res.send(true)
         }
     });
-};
+};