How to set filename of pdf in anonymous function as parameter

Yii 2.0 General Discussions
1

Hi guys, my intention is to get content of pdf file,which has already been uploaded in alias folder. For this, i programmed a method in Controller like this





    public function actionFile($filename) {

        $storagePath = Yii::getAlias('@pictures');

        if (!preg_match('/^[a-z0-9]+\.[a-z0-9]+$/i', $filename) || !is_file("$storagePath/$filename")) {

            throw new \yii\base\NotSupportedException ('Die PDF-Datei existiert nicht!');

        }

        return Yii::$app->response->sendFile("$storagePath/$filename", $filename);

    }

I fail calling this method in Controller using link in anonymous function. It will throw out error:





Unknown Property – yii\base\UnknownPropertyException

Getting unknown property: frontend\modules\dateianhang\models\Dateianhang::ERMTheorie.pdf

Any ideas, how to implement link correctly. Here is link in GridView:





    [

        'class' => 'yii\grid\ActionColumn',

        'template' => '{anlagen_index} <br>{anlagen_create} ',

        'buttons' => [

            'anlagen_index' => function ($model, $id) {

            $filename="ERMTheorie.pdf";

                return Html::a('<span class="glyphicon glyphicon-paperclip"></span>', ['/dateianhang/dateianhang/file','id' => $id->$filename], ['title' => 'Anlagen anzeigen', 'data' => ['pjax' => '0']]);

/*return Html::a('<span class="glyphicon glyphicon-paperclip"></span>', ['/dateianhang/dateianhang/file','filename' => $id->$filename], ['title' => 'Anlagen anzeigen', 'data' => ['pjax' => '0']]);

this will throw out 'Try to get property of non-object' without $model as parameter in function




            },            },

        ],

    ],
2

why don’t you put the file name directly into the array


'anlagen_index' => function ($model, $id) {


                return Html::a(

                              '<span class="glyphicon glyphicon-paperclip"></span>', 

                              ['/dateianhang/dateianhang/file','filename' => "ERMTheorie.pdf"], 

                              ['title' => 'Anlagen anzeigen', 'data' => ['pjax' => '0']]

                );

            },

Update: also the callback signature is following


function ($url, $model) {

    // return the button HTML code

}
3

Got it by my own…





  [

        'class' => 'yii\grid\ActionColumn',

        'template' => '{anlagen_index} <br>{anlagen_create} ',

        'buttons' => [

            'anlagen_index' => function () {

                $filename = "ERMTheorie.pdf";

                return Html::a('<span class="glyphicon glyphicon-paperclip"></span>', ['/dateianhang/dateianhang/file', 'filename' => $filename], ['title' => 'Anlagen anzeigen', 'data' => ['pjax' => '0']]);

            },

        ],

    ],

But Controller seems to be faulty!




var_dump("$storagePath/$filename");

will show





C:\xampp\htdocs\yii2_perswitch\frontend\modules\dateianhang\controllers\DateianhangController.php:262:

string 'C:\xampp\htdocs\yii2_perswitch\frontend/web/pictures/ERMTheorie.pdf' (length=67)

I know for 100 per cent, that file called ‘ERMTheorie.pdf’ is in my alias folder

Anyway,I will get Exception. Any ideas,what is wrong with controller?

4

My fault. Alias was wrong!

Alias correctly is like this,of course:




$storagePath = Yii::getAlias('@documents');

So,this thread can be closed as succesfully solved!