Custom Validation Not Working- Yii2-app-basic-Yii2

Question

I Posted one question yesterday regarding custom validation for radio button Textfield Mandatory On Radio Button. I got answer. But, that was not exact answer. But, it solve

Answer 1

You should to add 'enableAjaxValidation' => true in ActiveForm.

After do this your code should be,

controller

public function actionRegister()
{
    $model = new RegisterForm();
    if(Yii::$app->request->isAjax && $model->load(Yii::$app->request->post())) {
      \Yii::$app->response->format = \yii\web\Response::FORMAT_JSON;
      return \yii\widgets\ActiveForm::validate($model);
    }

    if ($model->load(Yii::$app->request->post())) 
    {
    }
    else
    {
        // HERE YOU CAN PRINT THE ERRORS OF MODEL
        echo "
";
        print_r($model->getErrors());
        echo "
";
    }
    return $this->refresh();
}

View

 'register-form',
           'enableAjaxValidation' => true,
]); ?>
    .
    .
    .
    field($model, 'AdminType')
            ->radioList(array('Individual'=>'An Individual', 'Firm'=>'Firm/Company'))
            ->label('Are You')?>
    field($model, 'CompanyName')->textInput()->label('Company Name')->error() ?>
    .
    .

It may help you.