CODEWITHSUNDEEP
wordpresswordpress-themingadvanced-custom-fields
Tim
Tim

Reputation: 891

Wordpress - Send email on Post meta value change

I want to accomplice the following. I want to automatically send an email on post publish/update when a certain post field value has changed.

I think I need to know 2 things for this. - How and where (what action) do I need to insert custom code on post publish/update - How to compare new post data to old state (and is this possible/availible in the action above)

Upvotes: 0

Views: 702

Answers (1)

Damocles
Damocles

Reputation: 1317

You can hook onto acf/save_post for this purpose. Read the documentation here: https://www.advancedcustomfields.com/resources/acf-save_post/

Since you want the callback to fire before the values are stored, in order to compare the old value against the new one, keep in mind to add a priority of less than 10. Assuming the field with 4 options has the field key field_4afd4af14415f:

function on_acf_post_save($post_id) {
  $post_type = get_post_type($post_id);
  if ($post_type === 'your-post-type') {
    $old_val = get_field('field_4afd4af14415f', $post_id);
    $new_val = $_POST['acf']['field_4afd4af14415f'];
    if ($old_val != $new_val) {
      // Send desired mail in here:
      // wp_mail(...);
    }
  }
}
add_action('acf/save_post', 'on_acf_post_save', 5, 1); // priority = 5

If your ACF field isn't at the top level, but inside a Group or Repeater, you will have to adapt the code reading from the $_POST['acf'] and get_field() result.

Upvotes: 1

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