[Resolved] add auto generate post title from fields

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[TorstenR3514]

Tell us what you are trying to do?
trying to generate a slug like "year-month-title" for bildungsangebot type

Is there any documentation that you are following?
https://toolset.com/forums/topic/create-post-title-for-cpt-from-two-custom-fields/
or is there an easier way to add a date to the slug, so even equal titles are unique?

Tried the following code in my child theme function, but i get an error. Warning: Cannot modify header information - headers already sent by (output started at /www/htdocs/w012252b/seiten/dev-client.reinecke.design/cms/wp-content/themes/crocal-child/functions.php:22) in /www/htdocs/w012252b/seiten/dev-client.reinecke.design/cms/wp-admin/includes/misc.php on line 1198

function sha_autogenerate_title( $post_id, $post ){
    
  if ( 'bildungsangebot' == $post->post_type ) {
      
    $start_datum = get_post_meta( $post_id, 'wpcf-kurs-start', true );
    $kurs_titel = get_post_meta( $post_id, 'wpcf-kurs-titel', true );
      
    $new_title = $start_datum . " " . $kurs_titel;
    $new_title = sanitize_text_field( $new_title );
    $new_slug = sanitize_title( $new_title );
      
    $args = array(
      'ID'          =>   $post_id,
      'post_title'  =>   $new_title,
      'post_name'   =>   $new_slug
    );
    wp_update_post( $args );
  }  
}
add_action( 'save_post', 'sha_autogenerate_title', 10, 2 ); 

Is there a similar example that we can see?

What is the link to your site?
hidden link
HTTP protection: toolset:562VFHjfv

[Minesh Supporter Languages: English (English ) Timezone: Asia/Kolkata (GMT+05:30)]

Hello. Thank you for contacting the Toolset support.

Well - We offer detailed Doc that should help you out here:
=> https://toolset.com/documentation/customizing-sites-using-php/updating-types-fields-using-php/

The save_post action must be used with a priority of at least 30 when used in conjunction with post types registered with Types, or inconsistencies in the updated data may be experienced.

For example:

function sha_autogenerate_title( $post_id, $post ){
     
  if ( 'bildungsangebot' == $post->post_type ) {
       
    $start_datum = get_post_meta( $post_id, 'wpcf-kurs-start', true );
    $kurs_titel = get_post_meta( $post_id, 'wpcf-kurs-titel', true );
       
    $new_title = $start_datum . " " . $kurs_titel;
    $new_title = sanitize_text_field( $new_title );
    $new_slug = sanitize_title( $new_title );
       
    $args = array(
      'ID'          =>   $post_id,
      'post_title'  =>   $new_title,
      'post_name'   =>   $new_slug
    );
    wp_update_post( $args );
  }  
}
add_action( 'save_post', 'sha_autogenerate_title', 30, 2 );

[TorstenR3514]

Thx for that link, but the way is the right one? Or?
Even if I'll maybe have to get a higher priority than '30'.

Thx Torsten

[Minesh Supporter Languages: English (English ) Timezone: Asia/Kolkata (GMT+05:30)]

We need minimum priority 30 you can set 31,40 etc.. but 30 is enough.

Please try to use the following example code where I changed the priority:

function sha_autogenerate_title( $post_id, $post ){
      
  if ( 'bildungsangebot' == $post->post_type ) {
        
    $start_datum = get_post_meta( $post_id, 'wpcf-kurs-start', true );
    $kurs_titel = get_post_meta( $post_id, 'wpcf-kurs-titel', true );
        
    $new_title = $start_datum . " " . $kurs_titel;
    $new_title = sanitize_text_field( $new_title );
    $new_slug = sanitize_title( $new_title );
        
    $args = array(
      'ID'          =>   $post_id,
      'post_title'  =>   $new_title,
      'post_name'   =>   $new_slug
    );

       // unhook this function so it doesn't loop infinitely
        remove_action('save_post', 'sha_autogenerate_title',30,2);

        // update the post, which calls save_post again
        wp_update_post( $args );

        // re-hook this function
        add_action('save_post', 'sha_autogenerate_title',30,2);

    
  }  
}
add_action( 'save_post', 'sha_autogenerate_title', 30, 2 );

[TorstenR3514]

My issue is resolved now. Thank you!