function media_update_7016 in D7 Media 7.4

Same name and namespace in other branches

1. 7 media.install \media_update_7016()
2. 7.2 media.install \media_update_7016()
3. 7.3 media.install \media_update_7016()

Convert Media entities to File entities.

This update function requires field_update_7002() to run before it since the field_bundle_settings variable has been split into separate variables per entity type and bundle.

See also

http://drupal.org/node/1418708

http://drupal.org/node/1211008

File

./media.install, line 367

Install, update and uninstall functions for the Media module.

Code

function media_update_7016() {

  // Allow File Entity module to take over the {file_managed}.type field. It
  // will create new indexes as it needs to, but it doesn't know about old ones,
  // so delete them.
  if (db_index_exists('file_managed', 'file_type')) {
    db_drop_index('file_managed', 'file_type');
  }
  module_enable(array(
    'file_entity',
  ));

  // Move all field instances from Media entity to File entity.
  $instances = field_read_instances(array(
    'entity_type' => 'media',
  ), array(
    'include_inactive' => TRUE,
    'include_deleted' => TRUE,
  ));
  foreach ($instances as $instance) {

    // Skip the old self-referencing file field. It will be deleted later in
    // this function.
    if ($instance['field_name'] === 'file') {
      continue;
    }

    // @todo Convert this to use _update_7000_field_read_fields()
    $fields = field_read_fields(array(
      'id' => $instance['field_id'],
    ), array(
      'include_inactive' => TRUE,
      'include_deleted' => TRUE,
    ));
    $field = $fields[$instance['field_id']];

    // There is no API for updating the entity_type foreign key within field
    // data storage. We can do a direct db_update() for when the default SQL
    // storage back-end is being used, but must skip updating fields that use a
    // different storage type.
    if ($field['storage']['type'] !== 'field_sql_storage' || !module_exists('field_sql_storage') || !$field['storage']['active']) {
      $messages[] = t('Cannot update field %id (%field_name) because it does not use the field_sql_storage storage type.', array(
        '%id' => $field['id'],
        '%field_name' => $field['field_name'],
      ));
      continue;
    }

    // Update the data tables.
    $table_name = _field_sql_storage_tablename($field);
    $revision_name = _field_sql_storage_revision_tablename($field);
    db_update($table_name)
      ->fields(array(
      'entity_type' => 'file',
    ))
      ->condition('entity_type', 'media')
      ->condition('bundle', $instance['bundle'])
      ->execute();
    db_update($revision_name)
      ->fields(array(
      'entity_type' => 'file',
    ))
      ->condition('entity_type', 'media')
      ->condition('bundle', $instance['bundle'])
      ->execute();

    // Once all the data has been updated, update the {field_config_instance}
    // record.
    db_update('field_config_instance')
      ->fields(array(
      'entity_type' => 'file',
    ))
      ->condition('id', $instance['id'])
      ->execute();
  }

  // Update the field_bundle_settings configuration variable: move media bundle
  // settings to file bundles, and move settings of the old self-referencing
  // file field to the new file pseudo-field.
  foreach ($instances as $instance) {
    if ($instance['field_name'] === 'file' && !$instance['deleted']) {
      $file_settings = field_bundle_settings('file', $instance['bundle']);
      $media_settings = field_bundle_settings('media', $instance['bundle']);
      $file_settings = array_merge($file_settings, $media_settings);
      if (isset($instance['widget']['weight'])) {
        $file_settings['extra_fields']['form']['file']['weight'] = $instance['widget']['weight'];
      }
      if (isset($instance['display'])) {
        foreach ($instance['display'] as $view_mode => $display) {
          if (isset($display['weight'])) {
            $file_settings['extra_fields']['display']['file'][$view_mode]['weight'] = $display['weight'];
          }
          if (isset($display['type'])) {
            $file_settings['extra_fields']['display']['file'][$view_mode]['visible'] = $display['type'] != 'hidden';
          }
        }
      }
      field_bundle_settings('file', $instance['bundle'], $file_settings);
    }
  }

  // Delete old media bundle settings.
  db_delete('variable')
    ->condition('name', db_like('field_bundle_settings_media__') . '%', 'LIKE')
    ->execute();

  // Copy field formatter settings of old self-referencing file field to file
  // pseudo-field formatter settings.
  $file_displays = variable_get('file_displays', array());
  foreach ($instances as $instance) {
    if ($instance['field_name'] === 'file' && !$instance['deleted']) {
      if (isset($instance['display'])) {
        foreach ($instance['display'] as $view_mode => $display) {
          if (isset($display['type']) && $display['type'] != 'hidden') {
            $file_formatter = 'file_field_' . $display['type'];
            $file_displays[$instance['bundle']][$view_mode][$file_formatter]['status'] = TRUE;
            if (isset($display['settings'])) {
              $file_displays[$instance['bundle']][$view_mode][$file_formatter]['settings'] = $display['settings'];
            }
          }
        }
      }
    }
  }
  variable_set('file_displays', $file_displays);

  // Delete the old self-referencing file field instances. If all instances are
  // deleted, field_delete_instance() will delete the field too.
  foreach ($instances as $instance) {
    if ($instance['field_name'] === 'file' && !$instance['deleted']) {
      field_delete_instance($instance);
    }
  }
  field_cache_clear();
}