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common/modules/fileloader/behaviors/FileloaderBehavior.php 3.63 KB
3735dff7   Yarik   test
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  <?php
      namespace common\modules\fileloader\behaviors;
  
      use yii\base\Behavior;
      use yii\base\Event;
      use yii\db\ActiveQuery;
      use yii\db\ActiveRecord;
      use yii\validators\Validator;
  
      /**
       * Class FileloaderBehavior
       * @package common\modules\fileloader\behaviors
       */
      class FileloaderBehavior extends Behavior
      {
  
          /**
           * @var string $fileclass Classname that hande files
           */
          public $fileclass = 'common\models\File';
  
          /**
           * @var string $relationtable Table name that keeps relation between model and file
           */
          public $relationclass = 'common\modules\fileloader\models\FileRelation';
  
          /**
           * @var int[] Files ids to insert
           */
          public $fileloader = [ ];
  
          /**
           * @inheritdoc
           */
          public function events()
          {
              return [
                  ActiveRecord::EVENT_AFTER_INSERT => 'afterSave',
                  ActiveRecord::EVENT_AFTER_UPDATE => 'afterSave',
                  ActiveRecord::EVENT_INIT         => 'attachValidator',
              ];
          }
  
          public function attachValidator($event)
          {
              $validator = Validator::createValidator('safe', $this->owner, 'fileloader');
              $this->owner->validators->append($validator);
          }
  
          /**
           * After saving model delete all relative files and insert new file connections from
           * fileloader variable
           *
           * @param Event $event
           */
          public function afterSave($event)
          {
              /**
               * @var ActiveRecord $owner
               * @var string       $relation
               */
              $owner = $this->owner;
              $relation = $this->relationclass;
              call_user_func([
                  $relation,
                  'deleteAll',
              ], [
                  'model'    => $owner->className(),
                  'model_id' => $owner->primaryKey,
              ]);
              if(!empty( $owner->fileloader )) {
                  foreach($owner->fileloader as $file) {
                      /**
                       * @var ActiveRecord $model
                       */
                      $model = new $relation([
                          'file_id'  => $file,
                          'model'    => $owner->className(),
                          'model_id' => $owner->primaryKey,
                          'user_id'  => \Yii::$app->user->getId(),
                          'status'   => 1,
                      ]);
                      if($model->validate()) {
                          $model->save(false);
                      }
                      unset( $model );
                  }
              }
          }
  
          /**
           * Bind owner class tp specified $fileclass via $relationclass table.
           * @return ActiveQuery
           */
          public function getFileloaderFiles()
          {
              /**
               * @var ActiveRecord $owner
               */
              $owner = $this->owner;
              $relationtable = call_user_func([
                  $this->relationclass,
                  'tableName',
              ]);
              return $owner->hasMany($this->fileclass, [ 'file_id' => 'file_id' ])
                           ->viaTable($relationtable, [ 'model_id' => $owner->primaryKey()[ 0 ] ], function($query) use ($owner) {
                               /**
                                * @var ActiveQuery $query
                                */
                               $query->andWhere([
                                   'model'  => $owner->className(),
                                   'status' => 1,
                               ]);
                           });
          }
      }