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common/modules/relation/relationHelper.php 1.52 KB
a8370482   Alexander Karnovsky   init project
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  <?php
  
  namespace common\modules\relation;
  
  use Yii;
  use yii\base\Object;
  
  class relationHelper extends Object {
      /** @var array $relations Cached relations list */
      private static $relations;
  
      /**
       * Return all relations for current @app
       * @return array
       */
      public static function getRelations() {
          $module = \Yii::$app->getModule('relation');
  
          if (!is_array($module->relations))
              return [];
  
          return $module->relations;
      }
  
      /**
       * Return one relation for key $name
       * @param string $name
       * @return string (@todo refix to relationOject)
       */
      public static function getRelation($name) {
          $name = strtolower($name);
          if (isset(self::$relations[$name])) {
              return self::$relations[$name];
          }
          $relations = self::getRelations();
          if (isset($relations[$name])) {
              self::$relations[$name] = self::prepareRelation($relations[$name]);
          } else {
              self::$relations[$name] = null;
          }
          return self::$relations[$name];
      }
  
  
      private static function prepareRelation($relation) {
          if (!isset($relation['linked_table']) && isset($relation['via']['model'])) {
              $relation['linked_table'] = $relation['via']['model']::tableName();
          }
          return $relation;
      }
  
      /**
       * @param string $name
       * @return bool
       */
      public static function issetRelation($name) {
          $relations = self::getRelations();
          return isset($relations[$name]);
      }
  }