/**
  * @route venues/all
  */
 public function all()
 {
     $venueList = array();
     $venueViewModel = new VenueViewModel();
     $venuesFromDb = new VenueModel();
     $allvenuesFromDb = $venuesFromDb->getAll();
     foreach ($allvenuesFromDb as $item) {
         $this->mapper->map($item, $venueViewModel);
         // objects are passed as reference ->creates deep copy before array_push
         $copy = unserialize(serialize($venueViewModel));
         array_push($venueList, $copy);
     }
     return new View($venueList);
 }