How to attach an custom js validation code with a field validation in model

Yii 2.0 General Discussions
1

I have a model in which i capture two dates from and to i want to validate on client side so that from < to i wrote a function to validate on server as

public function validateDate($attribute, $params) {

    if (&#33;&#036;this-&gt;hasErrors()) {


        &#036;from = new DateTime(&#036;this-&gt;from);


        &#036;to = new DateTime(&#036;this-&gt;to);


        if (&#33;(&#036;from &lt; &#036;to)) {


            &#036;this-&gt;addError(&#036;attribute, 'Dates are not correct');


        }


    }

}

and add rule to rule array as

[[‘to’], validateDate],

can some one tell how to add client side code for this. I was going through documentation i found this http://www.yiiframework.com/doc-2.0/guide-input-validation.html#implementing-client-side-validation link is it compulsory to create a new validation class and then add write functions there or is there any why to add js code to model class .

I am wondering how to use clientValidateAttribute() (http://www.yiiframework.com/doc-2.0/yii-validators-validator.html#clientValidateAttribute()-detail) in model to generate js code for comparison.

Thanks