Utilizing Conditional Aurelia Validation Based on Element's Display Status

Currently, I am in the process of setting up a license subscription form using Aurelia and the Aurelia Validation plugin. Within this form, there is a fieldset dedicated to personal information which contains mostly required fields that are validated by Aurelia validation.

Additionally, there is another fieldset for credit card information and billing address. These fields only become visible when the user selects the subscription radio button. All of the necessary fields have been included in the ValidationRules. My question is, how can I instruct Aurelia to only validate the fields that are currently visible?

validationtypescriptaurelia

Answer №1

To implement conditional validation, you can use the when method in your validation rules. Take a look at this example taken from the Aurelia Documentation.


ValidationRules
  .ensure('email')
    .email()
    .required()
      .when(order => order.shipmentNotifications)
      .withMessage('Please enter an email address if shipment notifications are requested.');

Answer №2

Utilizing if.bind on your element ensures that the hidden element will not undergo validation.

If your intention is to have the element present in your DOM but hidden, then if.bind is the way to go. This method prevents the element from being rendered in the DOM, thus avoiding validation.

By using show.bind, you can easily hide or display an element.

On the other hand, if.bind allows you to decide whether to render or not render an element.

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