send APIKey (_id)

models/Track.js

@@ -12,7 +12,6 @@ var TrackSchema = new mongoose.Schema({
   numEvents: {type: Number, default: 0},
   comments: [{ type: mongoose.Schema.Types.ObjectId, ref: 'Comment' }],
   author: { type: mongoose.Schema.Types.ObjectId, ref: 'User' },
-//Date;Time;Latitude;Longitude;Course;Speed;Right;Left;Confirmed;insidePrivacyArea
   trackData: { type: mongoose.Schema.Types.ObjectId, ref: 'TrackData' },
 }, {timestamps: true});
 

models/User.js

@@ -46,7 +46,8 @@ UserSchema.methods.toAuthJSON = function(){
     email: this.email,
     token: this.generateJWT(),
     bio: this.bio,
-    image: this.image
+    image: this.image,
+    apiKey: this._id
   };
 };