CODEWITHSUNDEEP
formsvalidationemaildrupal-8
sam0918
sam0918

Reputation: 19

validate multiple email addresses with Drupal 8

Currently I am using a renderable array to generate a form which has a HTML 5 email field on it.

Originally the form accepted a single email address. It needs to be modified to accept a separated list of email addresses AND pass Drupals email field validation.

The current code is

$form['an_email_field'] = [
  '#type' => 'email',
  '#title' => $this->t('enter an email'),
  '#default_value' => '[email protected]',
  '#attributes' =>['multiple']
]

The '#attributes' => ['multiple'] property adds multiple to the generated HTML fields attribute list which means HTML 5 will accept the input if multiple email addresses are provided.

But if multiple email addresses are provided Drupal's email validation fails.

Is it possible to make Drupal 8 accept multiple comma separated email addresses when '#type' => 'email' is used?

Can this be done without creating a custom validator?

Notes

Upvotes: 2

Views: 1511

Answers (1)

norman.lol
norman.lol

Reputation: 5374

With the Webform module installed you could simply use the webform_email_multiple element.

$form['an_email_field'] = [
  '#type' => 'webform_email_multiple',
  '#title' => $this->t('enter an email'),
  '#default_value' => '[email protected]',
];

Otherwise you may want to use a textfield or textarea element instead and then do the element or form validation on your own using the email.validator service after you exploded the comma-separated string. Here's how the validateEmail function does it on email elements:

$value = trim($element['#value']);
$form_state
  ->setValueForElement($element, $value);
if ($value !== '' && !\Drupal::service('email.validator')
  ->isValid($value)) {
  $form_state
    ->setError($element, t('The email address %mail is not valid.', [
    '%mail' => $value,
  ]));
}

Upvotes: 1

Related Questions