function serial_update_7130 in Serial Field 7

Upgrade path.

Switches from nids to uniqids.

File

./serial.install, line 52

Install, update and uninstall functions for the Serial module.

Code

function serial_update_7130() {
  module_load_include('inc', 'serial');
  $table_schema = _serial_get_table_schema();

  // Update the schema of old assistant tables.
  foreach (_serial_get_all_fields() as $field) {

    // Empty the table.
    $table = _serial_get_table_name($field->entity_type, $field->bundle, $field->field_name);
    db_delete($table)
      ->execute();

    // Drop nid field and key.
    db_drop_field($table, 'nid');
    db_drop_unique_key($table, 'nid');

    // Add uniqid field and key.
    db_add_field($table, 'uniqid', $table_schema['fields']['uniqid']);
    db_add_unique_key($table, 'uniqid', array(
      'uniqid',
    ));
  }
}