Reply To: Read-Only Field

• jsilver

• November 8, 2019 at 6:44 am

@pkhunter I wanted to created a read only “relationship” field that gets updated bidirectionally from a linked post. This is the solution I am using:

// render readonly field on relationship settings
add_action('acf/render_field_settings/type=relationship', function($field) {
  acf_render_field_setting( $field, array(
    'label'     => __('Read Only?','acf'),
    'instructions'  => '',
    'type'      => 'true_false',
    'name'      => 'readonly',
  'ui'		=> 1,
  'class'	=> 'acf-field-object-true-false-ui'
  ));  
});

// render relationships as links to the edit pages.
add_filter('acf/prepare_field/type=relationship', function($field) {
  // check to see if this is a read only relationship field
  if (isset($field['readonly']) && $field['readonly']) {
    // the value is an array of post_ids
    $post_ids = $field['value'];
    // render them as a list
    echo "<ul style='margin-left:5px;'>";
    foreach($post_ids as $post_id) {
      $post = get_post($post_id);
      $edit_link = get_edit_post_link($post_id);
      echo "<li><a href='$edit_link'>" . $post->post_title . "</a></li>";
    }
    echo "</ul>";
    // return false to stop default rendering
    return false;
  }
  return $field;
});