function system_update_8055

Move system theme settings from variables to config.

Related topics

File

drupal/core/modules/system/system.install, line 2116

Install, update and uninstall functions for the system module.

Code

function system_update_8055() {

  // Install the global theme settings from the system module.
  update_7_to_8_install_default_config('module', 'system.theme.global');

  // Add the global settings to a map for variable to configuration conversion.
  $theme_settings_to_config_map = array(
    'theme_settings' => 'system.theme.global',
  );

  // Can only upgrade core themes since if you follow the instructions in
  // UPGRADE.txt list_themes() would only return core themes at this point.
  // Therefore limit to a hard coded list to ensure that this update only
  // applies to core provided themes.
  $core_themes = array(
    'bartik',
    'seven',
    'stark',
  );

  // Add the core theme to the variable to configuration conversion map and
  // install the default configuration.
  foreach ($core_themes as $theme) {
    $variable = 'theme_' . $theme . '_settings';
    $config_name = $theme . '.settings';
    $theme_settings_to_config_map[$variable] = $config_name;
    update_7_to_8_install_default_config('theme', $config_name);
  }

  // Convert array of theme settings from Drupal 7's variable system to Drupal
  // 8's configuration management system.
  foreach ($theme_settings_to_config_map as $variable => $config_name) {
    $config = Drupal::config($config_name);
    $theme_settings = update_variable_get($variable);
    if (!empty($theme_settings)) {
      theme_settings_convert_to_config($theme_settings, $config)
        ->save();
    }
    update_variable_del($variable);
  }
}