Drush Extension : Replace %field with a field instance

What about title_field_replacement_init()?

This would be a significant performance booster and less memory requirements because the process is only loading nodes belonging to that bundle.

The reason for not going that way is that not every entity type supports bundle conditions, for instance taxonomy terms do not. However I think the version you are using is outdated, see the one I linked in #2.

Here's a drush command that I wrote for a custom project to upgrade node titles to Title module fields. It could pretty easily be adapted to work with other entity types as well, I think.

/**
 * @file
 * Drush commands for Title module.
 */

/**
 * Implements hook_drush_help().
 */
function title_drush_help($section) {
  switch ($section) {
    case 'drush:upgrade-title-fields':
      return dt('Upgrade title fields to use title module, so that titles can be localized.');
  }
}

/**
 * Implements hook_drush_command().
 */
function title_drush_command() {
  $items['upgrade-title-fields'] = array(
    'description' => 'Upgrade title fields to use title module, so that titles can be localized.',
    'drupal dependencies' => array('title', 'entity_translation'),
  );
  $items['upgrade-title-field'] = array(
    'description' => 'Upgrade a title field on a legacy field. DO NOT call this command directly, it does not do any checking.',
    'hidden' => TRUE,
    'arguments' => array(
      'entity_type' => 'The type of entity, be it a node, user, term, etc.',
      'bundle' => 'The entity bundle.',
      'legacy_field' => 'The machine name of the legace field.',
    ),
  );

  return $items;
}

/**
 * Command callback for upgrade-title-fields.
 */
function drush_title_upgrade_title_fields() {
  $entity_type = 'node';
  $entity_info = entity_get_info($entity_type);
  if (empty($entity_info['field replacement'])) {
    drush_log(t('There are no available title fields to upgrade.'), 'error');
    return FALSE;
  }

  $field_replacement_info = $entity_info['field replacement'];

  $upgraded = $failed = $skipped = 0;
  foreach (title_content_types() as $bundle) {
    $dt_args['@bundle'] = $bundle;
    $field_instances = field_info_instances($entity_type, $bundle);
    $extra_fields = field_info_extra_fields($entity_type, $bundle, 'form');
    $possible_fields = array_merge($field_instances, $extra_fields);

    if ($info = array_intersect_key($field_replacement_info, $possible_fields)) {
      foreach (array_keys($info) as $legacy_field) {
        $dt_args['@legacy_field'] = $legacy_field;
        if (drush_invoke_process('@self', 'upgrade-title-field', array($entity_type, $bundle, $legacy_field))) {
          $upgraded++;
        }
        else {
          $failed++;
        }
      }
    }
    else {
      $skipped++;
      drush_log(dt('Title fields have already been upgraded on content type @bundle.', $dt_args), 'ok');
    }
  }

  $messages = array();
  if ($upgraded) {
    $dt_args['@upgraded'] = $upgraded;
    $messages[] = 'Upgraded @upgraded title field(s).';
  }
  if ($skipped) {
    $dt_args['@skipped'] = $skipped;
    $messages[] = 'Skipped @skipped title field(s).';
  }
  if ($failed) {
    $dt_args['@failed'] = $failed;
    $messages[] = '@failed failed.';
  }
  $message = empty($messages) ? 'No fields upgraded.' : implode(' ', $messages);
  drush_log(dt($message, $dt_args), 'completed');
  if ($failed) {
    return FALSE;
  }
}

/**
 * Command callback for upgrade-title-field.
 */
function drush_title_upgrade_title_field($entity_type, $bundle, $legacy_field) {
  $dt_args['@entity_type'] = $entity_type;
  $dt_args['@bundle'] = $bundle;
  $dt_args['@field'] = $legacy_field;
  if (!title_field_replacement_toggle($entity_type, $bundle, $legacy_field)) {
    drush_log(dt("Failed to upgrade title field '@field' on content type @bundle.", $dt_args), 'warning');
    return FALSE;
  }
  title_field_replacement_batch_set($entity_type, $bundle, $legacy_field);
  drush_backend_batch_process();

  if (drush_get_error()) {
    drush_log(dt("Failed upgrading title field '@field' on bundle '@bundle'. Your database is likely messed up now. Sorry about that.", $dt_args), 'error');
    return FALSE;
  }
  drush_log(dt("Upgraded title field '@field' on content type @bundle.", $dt_args), 'success');
  return TRUE;
}

The exact version of q0rban attached as a patch

But I noticed a bunch of these:
Undefined property: stdClass::$original file.field.inc:265
what does not happen using the browser.

Other than that it appears to work well.
Thanks.

The notice was unrelated, after applying the patch from #985642: Remove file_attach_load() from file_field_update() the title replacement processed quietly.

ping ?

Don't forget to update the issue to "needs review" after you upload a patch ;-)

It would be a very nice to have indeed.

Patch tested and working.

+1

How was this RTBC and committed. AFAICT, this is broken because title_content_types() doesn't exist and never existed.

And ideally, this would not hard code 'node' but take the entity type as an argument.