How to make a redirect in yii2?

Question

Yii

There is a form

<?php $form = ActiveForm::begin(); ?>
<?= Html::activeTextInput($model, 'sum', [ 'class' => 'form-control','name' => 'sumer', 'value' => '']) ?>
<?= Html::submitButton($model->isNewRecord ? Yii::t('frontend', 'Transfer') : Yii::t('frontend', 'Update'), ['class' => $model->isNewRecord ? 'btn btn-success' : 'btn btn-primary']) ?>

controller

public function actionTrans()
    {

        $model = new Transactions();        
        if ($model->load(Yii::$app->request->post()) ) {

            return $this->redirect(['create']);
            
        } else {
            return $this->render('trans', [
                'model' => $model,
            ]);
        }
    }

form accept file

<?php
 $su =  ($_POST['sumer']);
echo $su;
?>

You need to make sure that when you click on submitting the form, it goes through the controller and is accepted by the post file.
I get a post data break in the controller and the create file does not accept anything, tell me how to solve this problem.

Answer 1

You misunderstand the essence of the POST request, the framework has nothing to do with it. If you want to transfer some data from one request to another (in the case of Yii, this is between two actions), then you will have to save it somewhere. As an option, I can suggest storing them in the session Yii::$app->session->set()// ->get()and actionCreate()passing this data to the view

return $this->render('create', [
  'data1' => Yii::$app->session->get('someData1'),
  .....
],);

Although in your code you are loading POST data into the model, it can be saved after all

if ($model->load(Yii::$app->request->post()) ) { // Здесь вы грузите
            // Делаете что хотите
            $model->save(); // Сохранили
            return $this->redirect(['create']);
        }

And in another query (which will process your actionCreate()) pull it out of the base as the last element.

Answer 2

<?php $form = ActiveForm::begin([
'action' => 'ваш урл'
]); ?>

Answer 3

Just include the file, right?
require "<----path to file---->";