Default Value settings in textarea in yii2

1. The position of the text field displayed in the view

<? = $ Form-> field ($ goods_model, 'goods _ introduce ')-> textarea (['class' => 'intr', 'rows' => 3])?>

2. To add a default value to the text domain, you must set it in view. value = "" cannot be used. textarea itself has no value attribute settings.

$ Goods_model-> goods_introduce = 'aaa ';

Finally, AAA will be displayed in the text domain as the default value

Default Value settings in textarea in yii2