vistart/yii2-models

<?php

/**
 *  _   __ __ _____ _____ ___  ____  _____
 * | | / // // ___//_  _//   ||  __||_   _|
 * | |/ // /(__  )  / / / /| || |     | |
 * |___//_//____/  /_/ /_/ |_||_|     |_|
 * @link http://vistart.name/
 * @copyright Copyright (c) 2016 vistart
 * @license http://vistart.name/license/
 */

namespace vistart\Models\traits;

/**
 * 使用此 trait 的类必须与使用 UserRelationTrait 的类配合使用。
 * $contentAttribute 关系组名称。
 * $contentTypeAttribute 关系组类型。
 * @version 2.0
 * @author vistart <i@vistart.name>
 */
trait UserRelationGroupTrait
{

    public $relationClass;

    /**
     * Attach events associated with user relation group.
     */
    public function initUserRelationGroupEvents()
    {
        $this->on(static::EVENT_BEFORE_DELETE, [$this, 'onDeleteGroup']);
    }

    /**
     * the event triggered before deleting group.
     * I do not remove group's guid from groupsAttribute which contains the guid
     * of group to be deleted.
     * @param \yii\base\Event $event
     */
    public function onDeleteGroup($event)
    {
        /*
          $relationClass = $this->relationClass;
          if (!is_string($relationClass)) {
          throw new \yii\base\NotSupportedException('You must specify the name of relation class.');
          }
          $sender = $event->sender;
          $groupGuid = $sender->guid;
          $createdByAttribute = $sender->createdByAttribute;
          $relations = $relationClass::findOnesAllRelations($sender->$createdByAttribute);
          foreach ($relations as $relation) {
          $relation->removeGroup($groupGuid);
          if (!$relation->save() && (YII_ENV !== YII_ENV_PROD || YII_DEBUG)) {
          $sender->recordWarnings();
          }
          }
         */
    }
}