update_field() with field type User

• dacgarz

• July 24, 2017 at 3:50 am

Hi,

I need help with a current project, which deals with having to add new users to the CPT using the field type Users when new user purchases a product.

I was hoping I could do it through functions.php.

• John Huebner

• July 25, 2017 at 7:23 am

Get the value of the field without formatting and supply the post ID of the post that you want to update. Get Field: https://www.advancedcustomfields.com/resources/get_field/; Update Field: https://www.advancedcustomfields.com/resources/update_field/

// $post_id is the ID of the post you want to update
// 3rd arg == false tells ACF not to format the value
// $users will == an array or user IDs
$users = get_field('user_field_name', $post_id, false);

// add the users ID to the array
$users[] = $new_user_id_to_add;

// update the field
// $selector == the field key of the field to update
update_field($selector, $users, $post_id);

• dacgarz

• July 25, 2017 at 11:54 pm

This is what I currently have.

elseif ($product_id == 1126) {
$e_post = get_page_by_title( $title );
$epost_id = $e_post->ID;
$member = wp_get_current_user();
$newmember = $member->ID;
update_field( ‘comp_members’, $newmember, $epost_id);
echo “New Member, $newmember , added to $title.”;

} // End of new member

Thoughts?

• John Huebner

• July 26, 2017 at 10:31 am

// ...................
  } elseif ($product_id == 1126) {
    $e_post = get_page_by_title( $title );
    $epost_id = $e_post->ID;
    $member = wp_get_current_user();
    $newmember = $member->ID;
    
    $members = get_field('comp_members', $epost_id, false);
    if (!is_array($members)) {
      $members = array();
    }
    $members[] = $newmember;
    
    update_field( 'comp_members', $newmember, $epost_id);
    echo "New Member, $newmember , added to $title.";

} // End of new member

• dacgarz

• July 27, 2017 at 1:00 am

Hi John,

I was actually able to fix this issue already. The error came from the line:

WRONG line : $e_post = get_page_by_title( $title );
CORRECT line : $e_post = get_page_by_title($title, OBJECT, ‘company’);