function field_sql_storage_update_8000

Changes field language into langcode.

File

drupal/core/modules/field/modules/field_sql_storage/field_sql_storage.install, line 84

Install, update, and uninstall functions for the Field SQL Storage module.

Code

function field_sql_storage_update_8000(&$sandbox) {

  // Prepare updated schema data structures.
  $primary_key_data = array(
    'entity_type',
    'entity_id',
    'deleted',
    'delta',
    'langcode',
  );
  $primary_key_revision = array(
    'entity_type',
    'entity_id',
    'revision_id',
    'deleted',
    'delta',
    'langcode',
  );
  $langcode_index = array(
    'langcode',
  );
  $field_langcode = array(
    'type' => 'varchar',
    'length' => 32,
    'not null' => true,
    'default' => '',
  );

  // Retrieve field data.
  $fields = _update_7000_field_read_fields(array(
    'storage_type' => 'field_sql_storage',
  ));

  // Update schema.
  foreach ($fields as $field) {
    $data_table = _field_sql_storage_tablename($field);
    $revision_table = _field_sql_storage_revision_tablename($field);
    $table_info = array(
      $data_table => $primary_key_data,
      $revision_table => $primary_key_revision,
    );
    foreach ($table_info as $table => $primary_key) {

      // Do not attempt to rename the 'language' column for fields that already
      // contain it (created during the upgrade before this update function).
      if (db_field_exists($table, 'language')) {
        db_drop_primary_key($table);
        db_drop_index($table, 'language');
        db_change_field($table, 'language', 'langcode', $field_langcode);
        db_add_primary_key($table, $primary_key);
        db_add_index($table, 'langcode', $langcode_index);
      }
    }
  }
}