Yii2: the Eimage holder does not work on the server

[Mystic]

Model:

namespace app\models;
class TestModel extends \yii\base\Model

{

public $myImage;
public function rules()
{
    return [
        ['myImage', 'image', ],
    ];
}

}

---

Introduction:

use yii\helpers\Html;

use yii\widgets\ActiveForm;

/* @var $this  object yii\web\View /

/ @var $form  object yii\widgets\ActiveForm /

/ @var $model object app\models\TestModel */
$form = ActiveForm::begin(['enableClientValidation' => false, ]);
echo $form->field($model, 'myImage')->fileInput();
echo Html::submitButton();
ActiveForm::end();

---

I've turned off the client's bond:

'enableClientValidation' => false,

To check on the server, as the client's side is working well, but the server doesn't work, so any files are missing? ♪ ♪

---

Controller:

namespace app\controllers;

use Yii;

use yii\web\UploadedFile;

use app\models\TestModel;
class TestController extends \yii\web\Controller

{
public function actionIndex()
{
    $model = new TestModel();

    if (
        $model->load(Yii::$app->request->post())
            &&
        $model->validate()
    ) {
        die('Model is valid!');
    }

    return $this->render('index', [
        'model' => $model,
    ]);
}

}

[briley]

So, as usual, ignorant! And reluctance to understand!

---

This is about the counteraller...

As is well known, PHP server arrival files are not available $_POST♪ $_FILES... So, actually, we can't download the model. Total so:

$model->load(Yii::$app->request->post());

We need to download the attributes that are files like this:

$model->myImage = UploadedFile::getInstance($model, 'myImage');

It's like before the validation, the model needs to be completely downloaded:

public function actionIndex()
{
    $model = new TestModel();
if ($model->load(Yii::$app->request->post())) {

    $model->myImage = UploadedFile::getInstance($model, 'myImage');

    if ($model->validate()) {

        die('Model is valid!');

    }

}

return $this->render('index', [
    'model' => $model,
]);

}

---

I'll add that it's necessary to assign attributes (which are files) after the call. $model->load()because they will otherwise be overloaded (because the POST request will also include this attribute but empty).