Undefined Variable model in kartik mpdf - yii2 - yii2

Question

I'm trying to use kartik mpdf to print data to a pdf file. I'm facing kind of same problem as - yii2 basic printing a page in pdf.
I've tried the solution given there but still getting the error.
View file(the code for the button) -
<?= Html::a('<i class="fa glyphicon glyphicon-print"></i> Print Salary Statement', ['/salary/salary/printsalarystatement'], [
'class'=>'btn btn-primary',
'target'=>'_blank',
'data-toggle'=>'tooltip',
'title'=>'Will open the generated PDF file in a new window'
]);?>
Controller
public function actionPrintsalarystatement() {
$pdf = new Pdf([
'content'=>$this->renderPartial('_printSalarystatement'), [
'model'=> $model,
'mode'=> Pdf::MODE_CORE,
'format'=> Pdf::FORMAT_A4,
'orientation'=>Pdf::ORIENT_POTRAIT,
'destination'=> Pdf::DEST_BROWSER,
'cssFile' => '#vendor/kartik-v/yii2-mpdf/assets/kv-mpdf-bootstrap.min.css',
'cssInline'=> '.kv-heading-1{font-size:18px}',
'options'=> ['title'=> 'Salary Statement'],
'methods'=> [
'setHeader'=>['Generated on: '.date("r")],
'setFooter'=>['|page {PAGENO}|'],
]
],
]);
return $pdf->render();
}
Present View.php -
<?= Html::a('<i class="fa glyphicon glyphicon-print"></i> Print Salary Statement', ['/salary/salary/printsalarystatement?id=s_id'], [
'class'=>'btn btn-primary',
'target'=>'_blank',
'data-toggle'=>'tooltip',
'title'=>'Will open the generated PDF file in a new window'
]);?>
Present Controller
public function actionPrintsalarystatement($id) {
//$model = Salary::find()->where(['s_id' => $id]);
$model = $this->findModel($id);
$searchModel = new SalarySearch();
$dataProvider = $searchModel->search(Yii::$app->request->queryParams);
$data = Salary::findOne($id);
$content = $this->renderPartial('_printSalarystatement', ['model' => $model,'dataProvider' => $dataProvider,'searchModel' => $searchModel,'data'=> $data]);
$pdf = new Pdf([
'mode'=> Pdf::MODE_CORE,
'format'=> Pdf::FORMAT_A4,
'destination'=> Pdf::DEST_BROWSER,
'content' => $content,
]);
return $pdf->render();
}

Answer 1

Where are you generating the $model? You need to pass or call that into the function somehow.

Answer 2

public function actionPrintsalarystatement() {
// you don't have the model for passing to the pdf object
// eg:
$model = YourModel::find()->where(['your_column' => 'your_value']);
$pdf = new Pdf([
'content'=>$this->renderPartial('_printSalarystatement'), [
'model'=> $model, // this $model is missing if you don assign a proper result to the this var like suggested above
'mode'=> Pdf::MODE_CORE,
Based on your comment :
you don'have a proper $id so you can't retrieve nothings
you have $model = Salary::find()->where(['s_id' => '$id']); this is wrong you must remove the quotes around $id this way $model = Salary::find()->where(['s_id' => $id]);
If you have $id in the page where you call the actionPrintsalarystatement tye you could pass to the action
eg:
/salary/salary/printsalarystatement?id=your_id
and
public function actionPrintsalarystatement($id) {