/**
  * Upload the image
  */
 public function actionUploadImage()
 {
     Yii::$app->response->format = Response::FORMAT_JSON;
     if (!empty($_FILES['file']['tmp_name'])) {
         if ($image = Image::load($_FILES['file']['tmp_name'], $this->_module->imageDriver)) {
             if (!empty($this->_module->maxImageResolution)) {
                 $resolution = explode('x', strtolower($this->_module->maxImageResolution));
                 $width = empty($resolution[0]) ? null : $resolution[0];
                 $height = empty($resolution[1]) ? null : $resolution[1];
                 if ($image->width > $width && $image->height > $height) {
                     $image->resize($width, $height, 'auto');
                 }
             }
             $extension = strtolower(image_type_to_extension($image->type, true));
             if (!in_array($extension, ['.jpg', '.gif', '.png'])) {
                 $extension = '.jpg';
             }
             $filename = $this->uniqueRandomFilename($this->_module->imageUploadPath, $extension);
             if ($image->save("{$this->_module->imageUploadPath}/{$filename}{$extension}")) {
                 return ['filelink' => "{$this->_module->imageBaseUrl}/{$filename}{$extension}"];
             }
         }
     }
     return [];
 }
 /**
  * Upload the images.
  * @param Event $event
  * @throws ErrorException
  */
 public function uploadImages($event)
 {
     if (!empty($this->attributes)) {
         $modelName = array_reverse(explode('\\', $this->owner->className()))[0];
         if (!empty($_FILES[$modelName]['tmp_name'])) {
             $save = false;
             $files =& $_FILES[$modelName]['tmp_name'];
             if (!$this->owner->hasMethod('getPrimaryKey', false)) {
                 throw new ErrorException(sprintf('Cannot get primary key of class %s', $this->owner->className()));
             }
             /** @var int $primaryKey */
             $primaryKey = call_user_func([$this->owner, 'getPrimaryKey']);
             $upload_dir = Yii::getAlias($this->upload_dir, true);
             foreach ($this->attributes as $attribute => $settings) {
                 if (!empty($files[$attribute])) {
                     $save = true;
                     $settings = array_merge($this->defaultImagesSettings, $settings);
                     $filename = $primaryKey . '-' . Yii::$app->security->generateRandomString(mt_rand(5, 12));
                     if (!in_array($attribute, $this->owner->attributes())) {
                         throw new ErrorException(sprintf('Cannot get attribute %s of class %s', $attribute, $this->owner->className()));
                     }
                     foreach ($settings['sizes'] as $name => $options) {
                         if (is_array($options)) {
                             $options = array_merge($settings, $options);
                         } else {
                             $options = array_merge($settings, ['size' => $options]);
                         }
                         if ($image = Image::load($files[$attribute], $this->imageDriver)) {
                             $path = $this->schemaTo($upload_dir, $attribute, $name);
                             if (!empty($this->owner->{$attribute})) {
                                 @unlink("{$path}/{$this->owner->{$attribute}}.{$options['format']}");
                             }
                             if ($options['size'] !== 'original') {
                                 $info = explode('x', strtolower($options['size']));
                                 $width = empty($info[0]) ? null : $info[0];
                                 $height = empty($info[1]) ? null : $info[1];
                                 $image->resize($width, $height, $options['master'])->background($options['background']);
                             }
                             if ($image->save("{$path}/{$filename}.{$options['format']}", $options['quality'])) {
                                 $this->owner->{$attribute} = $filename;
                             } else {
                                 $this->owner->{$attribute} = '';
                             }
                         }
                     }
                     unset($files[$attribute]);
                 }
             }
             if ($save && $event->name === BaseActiveRecord::EVENT_AFTER_UPDATE) {
                 $this->owner->save(false);
             }
         }
     }
 }