Change scenario in form Yii2

Question

I want to change scenario in view page by jQuery. There is a checkbox in my form, I want inputbox be required in checked checkbox.

my rule:

public function rules() {
        return [
               .
               .
               .
               ['pass' , 'required', 'on'=> 'checked']
        ]
}

my view page:

<?=$form->field($model, 'check')->checkbox()?>
<?=$form->field($model, 'Pass')->textInput(['maxlength' => 20])?>

Answer 1

Try to set up your rule like this:

public function rules() {
    $checkBoxID = Html::getInputId($this, 'check');

    return [
        /* other rules */
        ['pass' , 'required', 
            'when' => function($model) {
                return $model->check;
            },
            'whenClient'=> "function(attribute, value){
                return $('#{$checkBoxID}').prop('checked');
            }",
            'on' => 'checked'
        ],
    ];
}

Read about conditional validation and whenClient validator property . Also consider naming you scenario more informative, eg by its purpose, like 'on' => 'sign-up' , or 'on' => 'login' . Scenario is useful when you need certain rules to apply in particular cases, but you need to specify this scenario explicitly. Either when you instantiate a model

$model = new MyModel();
$model->scenario = 'sign-up';

and passing it into a view, or before doing any validation after $model->load($data)