Create/update post title from ACF fields

• Weissnix

• July 25, 2022 at 6:34 am

Hello together,
I want to set the post title myself with custom fields.
For this I had found this post here:
https://support.advancedcustomfields.com/forums/topic/createupdate-post-title-from-acf-fields/

I have created 2 custom plugin folders for my custom post types.

As long as only one plugin is active, this works, or always save with the higher priority.

First Plugin with priority 15

add_action('acf/save_post', 'mitarbeiter_acf_speichern',15);
function mitarbeiter_acf_speichern($post_id) {
    $mein_post = array();
    $mein_post['ID'] = $post_id;
    $nachname = get_field('nachname');
    $vorname = get_field('vorname');
    $mein_post['post_title'] = $vorname  . ' ' . $nachname;

    // Save/Update Post
    wp_update_post( $mein_post );
}

Second Plugin with priority 16

// Wird nachdem speichern ausgeführt
add_action('acf/save_post', 'kantine_acf_speichern',16);
function kantine_acf_speichern($post_id) {
    $kantine_post = array();
    $kantine_post['ID'] = $post_id;
    $myvar = get_field('menu01');
    $kantine_post['post_title'] = $myvar;
    
    wp_update_post( $kantine_post );
}

Can anyone give me a hint?

• John Huebner

• July 26, 2022 at 7:43 pm

You need to have conditions on when the title is generated. In your case the second action with a priority of 16 will always run second. Since the fields of the other post type do not exist get field returns NULL and set the title to nothing.

YOu need to do something like

if (get_post_type($post_id) == 'your-cpt-name')) {
   // set post title
}

or

if (get_field('your-field-name', $post_id)) {
  // the field has a title, set post title from this field.
}

• Weissnix

• July 27, 2022 at 11:02 am

Thank you John, it helped to check the field if it is empty.

if (get_field('your-field-name', $post_id)) {
  // the field has a title, set post title from this field.
}