CODEWITHSUNDEEP
yii2yii2-advanced-appyii2-user
Fyp16
Fyp16

Reputation: 131

action download in gridview yii2

I'm very new with YII2. I want to create a download function to the file that was uploaded before. I've referred how to create action download at Gridview in Yii2. However, when I click button download, it load the blank page. Here the code.

At gridview

<?=GridView::widget([
        'dataProvider'=>$dataProvider,
        'id'=>'mygrid',
        'columns' => [
        ['class' => 'yii\grid\SerialColumn'],
        'project_name',
        'project_file',
        'created_date',
        [
        'class'    => 'yii\grid\ActionColumn',
        ],
        ['attribute'=>'Download',
        'format'=>'raw',
        'value' => function($data)
        {
        return
        Html::a('Download file', ['firstyear/download', 'id' => $data->id],['class' => 'btn btn-primary']);

        }
        ],
            ]

]); ?>

At actionDownload

public function actionDownload($id) 
{ 
$download = Firstyear::findOne($id); 
$path=Yii::getAlias('@webroot').'/uploads/'.$download->project_file;
if (file_exists($path)) {

    return Yii::$app->response->sendFile($path);

}
}

At actionCreate (upload file)

public function actionCreate()
{
    $model = new Firstyear();
    if ($model->load(Yii::$app->request->post())) 
    {      
            $project =$model->project_name;
            $model->file= UploadedFile::getInstance($model,'file');
            $model-> file->saveAs('uploads/'.$project.'.'.$model->file->extension);
            $model->project_file='uploads/'.$project.'.'.$model->file->extension;

            $model->save();
            Yii::$app->getSession()->setFlash('success','Data saved!');
            return $this->redirect(['view','id'=> $model->id]);
            } 

            else {

            return $this ->renderAjax('create', [
                'model'=>$model,
            ]);
            }         

}

Thanks.

Upvotes: 0

Views: 2805

Answers (1)

David
David

Reputation: 532

I suspect that the $path is not correct, in the action create, you already include the uploads folder in your $model->project_file

public function actionCreate()
{
    $model = new Firstyear();
    if ($model->load(Yii::$app->request->post())) 
    {      
            .......
            $model->project_file='uploads/'.$project.'.'.$model->file->extension;
            $model->save();
            ....
     }         

}

but you use it again in actionDownlaod

public function actionDownload($id) 
{ 
    .....
    $path=Yii::getAlias('@webroot').'/uploads/'.$download->project_file;
    if (file_exists($path)) {
        return Yii::$app->response->sendFile($path);

    }
}

you should try to remove the uploads folder in the actionDownlaod, and added some debug message

    public function actionDownload($id) 
    { 
        .....
        $path=Yii::getAlias('@webroot').'/'.$download->project_file;
        if (file_exists($path)) {
            return Yii::$app->response->sendFile($path);
        } else {
            throw new NotFoundHttpException("can't find {$download->project_file} file");
        }
    }

Upvotes: 4

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