function content_migrate_rollback in Content Construction Kit (CCK) 7.3

Helper function to perform rollback.

3 calls to content_migrate_rollback()

content_migrate_rollback_submit in modules/content_migrate/includes/content_migrate.admin.inc

Submit handler.

drush_content_migrate_rollback in modules/content_migrate/includes/content_migrate.drush.inc

Command callback.

_content_migrate_batch_process_migrate_data in modules/content_migrate/includes/content_migrate.admin.inc

Batch operation callback to migrate data. Copy old table data to new field table.

File

modules/content_migrate/includes/content_migrate.admin.inc, line 165

content_migrate.admin.inc Code to process field data migration, moved into a separate file for efficiency.

Code

function content_migrate_rollback($field_names) {
  foreach ($field_names as $field_name) {
    $field = field_info_field($field_name);

    // Deleting the field only marks it for deletion.
    field_delete_field($field_name);

    // We are bypassing the field batch processing
    // and simply deleting all the data.
    // The assumption is that the migration was
    // unsuccessful and will be re-attempted
    // and we need to remove all traces of the
    // new field for later migrations to work.
    $new_table = content_migrate_new_table($field);
    db_drop_table($new_table);
    $instances = field_read_instances(array(
      'field_id' => $field['id'],
    ), array(
      'include_deleted' => 1,
    ));
    foreach ($instances as $instance) {
      field_purge_instance($instance);
    }
    field_purge_field($field);
    drupal_set_message(t('Rolling back @field_name.', array(
      '@field_name' => $field_name,
    )));
  }
}