Favorite and playlist models

app/controllers/user_controller.rb

@@ -43,6 +43,36 @@ class UserController < ApplicationController
     render :json => @res
   end
   
+  def fav
+    @res = {status: 'fail'}
+    check = check_auth(params)
+    
+    if check == true
+      fav = Favorite.new
+      if not params[:artist].nil?
+        artist = Artist.find(params[:artist]);
+        unless artist.nil?
+          fav.artist_id = artist.id
+          res[:status] = 'added'
+        end
+      elsif not params[:album].nil?
+        album = Album.find(params[:album]);
+        unless album.nil?
+          fav.album_id = album.id
+          res[:status] = 'added'
+        end
+      elsif not params[:track].nil?
+        track = Track.find(params[:track]);
+        unless track.nil?
+          fav.track_id = track.id
+          res[:status] = 'added'
+        end
+      end
+    end
+    
+    render :json => @res
+  end
+  
   private
   
   def check_auth params