display_field_copy-2.x-dev/display_field_copy.module

<?php
/**
 * @file
 * Contains display_field_copy.module.
 */

/**
 * Implements hook_theme_registry_alter().
 *
 * Shift the preprocess to the top to make it easier to move items.
 */
function display_field_copy_theme_registry_alter(&$theme_registry) {
  array_unshift($theme_registry['field']['preprocess functions'], 'display_field_copy_field');

  foreach ($theme_registry as $hook => $theme) {
    if (isset($theme['base hook']) && $theme['base hook'] == 'field') {
      array_unshift($theme_registry[$hook]['preprocess functions'], 'display_field_copy_field');
    }
  }
}

/**
 * Field Preprocess Callback.
 *
 * Move the items into the proper place and set is_multiple to TRUE.
 */
function display_field_copy_field(array &$variables) {
  $element = &$variables['element'];

  $field_type = $element['#field_type'];
  if ($field_type != 'ds') {
    return;
  }

  $field_name = $element['#field_name'];
  if (!strpos($field_name, ':')) {
    return;
  }

  $pieces = explode(':', $field_name);
  if ($pieces[0] != 'display_field_copy') {
    return;
  }

  $items = $element[0][0];
  unset($element[0]);

  $element = array_merge($element, $items);

  if (count($items) > 1) {
    $element['#is_multiple'] = TRUE;
  }
}