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How To: Custom Client Validation On Checkbox Toggle and Optional Input Field

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How To: Custom Client Validation On Checkbox Toggle and Optional Input Field

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yii2, form, model, model validation, Form validation, ClientValidation, client-side, whenclient, rules, validation rules, javascript, jquery

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You **do not** need to reset the status of all the inputs on your form.

You **do not** need to set the "submitting" value to true, as illustrated in the Yii2 Cookbook (linked to from the Yii2 docs on Client Validation).


### Use Case

You have a form with a checkbox and a text input. The checkbox is not required, but if it is checked, the text input should then be required. If the checkbox is un-checked, the text input should no longer be required. In my case, it is for using Gravatar for user profile pics. If they have Gravatar, they check the box and enter in their Gravatar email address (since it may not match the email they used to register on my site). Later, I will be pairing it with cebe's yii2-gravatar extension. It is actually quite simple :)

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Viewed: 24 746 times
Version: 2.0
Category: How-tos
Tags: client-side, ClientValidation, form, Form validation, javascript, jquery, model, model validation, rules, validation rules, whenclient, yii2
Written by: Wade Shuler
Last updated by: Wade Shuler
Created on: Jul 5, 2016
Last updated: 8 years ago
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