/**
* 先检查文件是否被使用没有使用则删除,在beforedelete中
* 尝试删除文件.
*
* @param unknown $id
*/
public function deleteFile($id)
{
$isUse = AttachmentIndex::find()->where(['attachment_id' => $id])->count();
if ($isUse > 0) {
return false;
}
$file = Attachment::findOne(['attachment_id' => $id]);
$file->delete();
}
/**
* Finds the Attachment model based on its primary key value.
* If the model is not found, a 404 HTTP exception will be thrown.
*
* @param integer $id
* @return Attachment the loaded model
* @throws NotFoundHttpException if the model cannot be found
*/
protected function findModel($id)
{
if (($model = Attachment::findOne($id)) !== null) {
return $model;
} else {
throw new NotFoundHttpException('The requested page does not exist.');
}
}
