Add a subject line to Email mailto?

• sebarts

• May 28, 2020 at 6:04 am

So I am building a profile page template in Elementor that dynamically pulls content from ACF fields. I have it pulling the email field into a clickable mailto link which is working great but I’m just wondering if there’s a way to add a set subject line to the field as well?

• John Huebner

• May 28, 2020 at 9:28 pm

https://www.computerhope.com/issues/ch000056.htm

However, I should warn you that this is old. You can add a subject and even body content if you do a search for that, but having them may trigger a security warning in some browsers now. Doing this is frowned upon.

• sebarts

• May 30, 2020 at 8:13 am

Aha thank you for the info!

• studiofasol

• May 12, 2021 at 12:23 am

I’m very late to this thread, but @sebarts I’d love to know how you made a clickable mailto link with ACF. I’m scouring the web and no one seems to have a good answer.

I have tried:
Creating a URL field and putting in the mailto: link there (doesn’t work, ACF says that it’s not a valid URL)
Creating a Link field and putting the mailto: link there, which ACF accepts, but then that field doesn’t show up as an option when I’m trying to create a template to draw dynamic content.

• John Huebner

• May 12, 2021 at 12:54 am

I use a text field. I have built additions to text fields for ACF.

First I add a setting to all text fields

add_action('acf/render_field_settings/type=text', 'validate_text_as_href_setting');
function validate_text_as_href_setting($field) {
  // this addes a setting to text fields
  // setting it to true will require that the content of the fields
  // meets requirements to be used as a link href value
  $args = array(
    'label' => 'Validate as HREF',
    'instructions' => 'Requires a valid href attribute. This includes values starting with: http://, https://, ftp://, mailto:, tel:, sms: /, and #',
    'type' => 'true_false',
    'name' => 'validate_href',
    'ui' => 1,
    'class' => ''
  );
  acf_render_field_setting($field, $args);
}

The I have a validation filter for all text fields

add_action('acf/validate_value/type=text', 'validate_text_as_href', 10, 4);
function validate_text_as_href($valid, $value, $field, $input) {
  // if the setting created by validate_text_as_href_setting
  // is true than this filter will text input to ensure it can
  // be used in as a link href value
  // this allows links starting with
  // / (site root relative), http://, https://, ftp://, # (anchor), mailto:, tel:
  if (!$valid) {
    return $valid;
  }
  if (isset($field['validate_href']) && $field['validate_href'] && !empty($value)) {
    if (!preg_match('%^(https?\://|ftp\://|/|#|mailto\:|sms\:|tel\:)%i', $value)) {
      $valid = 'Enter a Valid HREF Value';
    }
  }
  return $valid;
}

I use another text field for the link text.

then, of course there is the code to add to show the link

<a href="<?php the_field('my_link_field"); ?>"><?php the_field('my_link_text_field'); ?></a>

• studiofasol

• May 12, 2021 at 12:59 am

Oh wow! I actually found a much simpler solution using Elementor. Please see screenshot:

Screen-Shot-....png