Make form submit button disabled when the form submit.

$ composer require light/yii2-lock-form=~1.0.2 

Can can depends this in your assets:

if you depends on yii2-bootstrap, you can use light\widgets\LockBsFormAsset instead. So can decrease the asset size.

class YourAsset extends AssetBundle { //.. public $depends = [ //your other depends 'light\widgets\LockFormAsset' ]; } 

Or directly inject in the view:

use light\widgets\LockFormAsset; LockFormAsset::register($this);