Site Title as a custom field

Hi Will,

You can use the filter hook pre_get_document_title to change the site title. For example:

function change_site_title( $title ) {
    $field_value = rwmb_meta( 'field_id', ['object_type' => 'setting'], 'option_name' );
    $title = $field_value . ' - ' . get_bloginfo('name');
    return $title;
}
add_filter( 'pre_get_document_title', 'change_site_title', 9999 );

Refer to the documentation
https://developer.wordpress.org/reference/hooks/pre_get_document_title/
https://docs.metabox.io/extensions/mb-settings-page/#getting-field-value