yii\widgets\ActiveForm::init PHP Method

    public function init()
    {
        if (!isset($this->options['id'])) {
            $this->options['id'] = $this->getId();
        }
        ob_start();
        ob_implicit_flush(false);
    }

 public function init()
 {
     $this->id = $this->model->formName();
     $this->action = RequestModule::getPopupUrl(['type' => $this->model->tableName()]);
     $this->fieldConfig = ['template' => '<div class="row">{input}{error}</div>', 'errorOptions' => ['class' => 'errorMessage']];
     parent::init();
 }