Associate authors programmatically

Hi, I am trying to programmatically associate authors for a given post of type ‘laboratory’ (it is a custom post type already defined in the system). Basically, to make a long story short, I am using the following code (considering ‘$user_01->ID’ and ‘$user_02->ID’ are the IDs of the two users I want to associate as post authors):

  $my_post = array (
    'comment_status'    => 'closed',
    'ping_status'       => 'closed',
    'post_author'       => $user->ID,
    'post_title'        => $title,
    'post_status'       => 'draft',
    'post_type'         => 'laboratory',
  );

  // Creates the post of type 'laboratory' and gets its ID right after.
  $post_id = wp_insert_post( $my_post );

  // ... and here is how I am trying to add coauthors:
  global $coauthors_plus;
  $coauthors_plus->add_coauthors( $post_id, array( $user_01->user_login, $user_02->user_login ), false );

This doesn’t work. The post of type ‘laboratory’ is actually created, but the global admin user is assigned as author, instead of the two coauthors. I have also tried passing user IDs for the add_coauthors function, with no success:

$coauthors_plus->add_coauthors( $post_id, array( $user_01->ID, $user_02->ID ), false );

• This topic was modified 6 years, 9 months ago by mabho.