Added categories and updated difficulties for courses.

apiv1/controllers/CourseController.js

@@ -192,6 +192,7 @@ module.exports = {
                     Course.shortname = req.body.shortname ? req.body.shortname : Course.shortname;
                     Course.lessons = req.body.lessons ? req.body.lessons : Course.lessons;
                     Course.difficulty = req.body.difficulty ? req.body.difficulty : Course.difficulty;
+                    Course.categories = req.body.categories ? req.body.categories : Course.categories;
                     Course.description = req.body.description ? req.body.description : Course.description;
                     Course.lessons = req.body.lessons ? req.body.lessons : Course.lessons;
 

apiv1/models/CourseModel.js

@@ -10,7 +10,14 @@ let LessonSchema = new Schema({
 let CourseSchema = new Schema({
     'shortname': String,
     'name': String,
-    'difficulty': Number,
+    'difficulty': {
+        type: Number,
+        enum: [0, 1, 2, 3],
+    },
+    'categories': [{
+        type: String,
+        enum: ["geometry", "transformations", "animations", "groups", "firstTimer", "teachers", "misc"],
+    }],
     'description': String,
     'lessons': [LessonSchema]
 });