/**
  * Display a listing of the resource.
  *
  * @return Response
  */
 public function index()
 {
     $users = Users::get();
     $comments = Comments::get();
     $supports = Supports::get();
     $notes = Notes::get();
     $usersJson = array();
     $commentsJson = array();
     $supportsJson = array();
     $notesJson = array();
     // build users
     foreach ($users as $user) {
         array_push($usersJson, array('id' => $user->id, 'name' => $user->name));
     }
     // build comments
     foreach ($comments as $comment) {
         array_push($commentsJson, array('id' => $comment->id, 'article_id' => $comment->article_id, 'user_id' => $comment->user_id, 'comment' => $comment->comment, 'challenge' => $comment->challenge));
     }
     // build supports
     foreach ($supports as $support) {
         array_push($supportsJson, array('id' => $support->id, 'user_id' => $support->user_id, 'comment_id' => $support->comment_id));
     }
     // build notes
     foreach ($notes as $note) {
         array_push($notesJson, array('id' => $note->id, 'comment_id' => $note->comment_id, 'comment' => $note->comment));
     }
     // build json
     $json = array('users' => $usersJson, 'comments' => $commentsJson, 'supports' => $supportsJson, 'notes' => $notesJson);
     // display json
     echo json_encode($json);
 }