Download or view uploaded file located in the serverb yii 2 - php

Question

I have uploaded a file to the server and I would like to download the file. How should I do that .
This is the upload in the controller
{
$model = new Upload();
if ($model->load(Yii::$app->request->post()))
{
$filename = $model->_upload;
$model->_upload= UploadedFile::getInstance($model,'_upload');
$model->_upload->saveAs('uploads/'.$filename.'.'.$model->_upload->extension);
$model->_upload = 'uploads/'.$filename.'.'.$model->_upload->extension;
$model->save();
return $this->redirect(['view', 'id' => $model->id_uploads]);
return $this->redirect(['index']);
}
return $this->render('create', [
'model' => $model,
]);
}

Answer 1

Assuming your uploads folder is in the web directory or webroot, you can use the below function, just copy paste into your controller and then to download the file, type the url along with the filename in the query string like for instance if your controller name is FilesController then the url will be www.mydomain.com/files/download?filename=your_file_name
/**
* Downloads the file
*
* #param string $filename the name of the file to be downloaded
*
* #return mixed
*/
public function actionDownload($filename)
{
$filepath = \Yii::getalias('#webroot') . DIRECTORY_SEPARATOR
. 'uploads' . DIRECTORY_SEPARATOR . $filename;
return \Yii::$app->response->sendFile($filepath);
}
Pay Attention
It is the simplest way to do it you are saving the file name along with the path in the table which is wrong, you should just save the file name along with the extension like my_file.doc without path, and then to download the file just lookup the filename in the table using the file id rather than the filename or any kind of hash that you store along with the filename in the table
public function actionDownload($fileId)
{
$filename = Upload::findOne(['id_uploads'=>$fileId]);
$filepath = \Yii::getalias('#webroot') . DIRECTORY_SEPARATOR
. 'uploads' . DIRECTORY_SEPARATOR . $filename;
return \Yii::$app->response->sendFile($filepath);
}
Secondly you should follow naming conventions for the class properties, _upload for a public property looks odd as mostly private member variables are prefixed with an underscore. you should use some coding standards like phpcs
and what is with the 2 redirect statements inside the if condition
return $this->redirect(['view', 'id' => $model->id_uploads]);
return $this->redirect(['index']);
the second one is unreachable just remove it.