Пример #1
0
 /**
  * Transforms entities into choice keys
  *
  * @param  Collection|object  A collection of entities, a single entity or
  *                            NULL
  * @return mixed              An array of choice keys, a single key or
  *                            NULL
  */
 protected function transform($collectionOrEntity)
 {
     if (null === $collectionOrEntity) {
         return $this->getOption('multiple') ? array() : '';
     }
     if (count($this->identifier) > 1) {
         // load all choices
         $availableEntities = $this->getEntities();
         if ($collectionOrEntity instanceof Collection) {
             $result = array();
             foreach ($collectionOrEntity as $entity) {
                 // identify choices by their collection key
                 $key = array_search($entity, $availableEntities);
                 $result[] = $key;
             }
         } else {
             $result = array_search($collectionOrEntity, $availableEntities);
         }
     } else {
         if ($collectionOrEntity instanceof Collection) {
             $result = array();
             foreach ($collectionOrEntity as $entity) {
                 $result[] = current($this->getIdentifierValues($entity));
             }
         } else {
             $result = current($this->getIdentifierValues($collectionOrEntity));
         }
     }
     return parent::transform($result);
 }