function update_prepare_d8_language

Prepare Drupal 8 language changes for the bootstrap if needed.

File

drupal/core/includes/update.inc, line 323

Drupal database update API.

Code

function update_prepare_d8_language() {
  if (db_table_exists('languages')) {
    $languages = db_select('languages', 'l')
      ->fields('l')
      ->execute();
    $plurals = array();
    $javascript = array();
    $prefixes = array();
    $domains = array();
    foreach ($languages as $language) {
      $plurals[$language->language] = array(
        'plurals' => $language->plurals,
        'formula' => $language->formula,
      );
      $javascript[$language->language] = $language->javascript;
      $prefixes[$language->language] = $language->prefix;
      $domains[$language->language] = $language->domain;
    }
    variable_set('locale_translation_plurals', $plurals);
    variable_set('locale_translation_javascript', $javascript);
    variable_set('locale_language_negotiation_url_prefixes', $prefixes);
    variable_set('locale_language_negotiation_url_domains', $domains);

    // Drop now unneeded columns.
    db_drop_field('languages', 'plurals');
    db_drop_field('languages', 'formula');
    db_drop_field('languages', 'javascript');
    db_drop_field('languages', 'prefix');
    db_drop_field('languages', 'domain');
    db_drop_field('languages', 'native');
    db_drop_field('languages', 'enabled');

    // Update language count.
    variable_set('language_count', db_query('SELECT COUNT(language) FROM {languages}')
      ->fetchField());

    // Rename the languages table to language.
    db_rename_table('languages', 'language');

    // Install/enable the language module. We need to use the update specific
    // version of this function to ensure schema conflicts don't happen due to
    // our updated data.
    $modules = array(
      'language',
    );
    update_module_enable($modules);

    // Rename language column to langcode and set it again as the primary key.
    if (db_field_exists('language', 'language')) {
      db_drop_primary_key('language');
      $langcode_spec = array(
        'type' => 'varchar',
        'length' => 12,
        'not null' => TRUE,
        'default' => '',
        'description' => "Language code, e.g. 'de' or 'en-US'.",
      );
      db_change_field('language', 'language', 'langcode', $langcode_spec, array(
        'primary key' => array(
          'langcode',
        ),
      ));
    }

    // Adds the locked column and saves the special languages.
    if (!db_field_exists('language', 'locked')) {
      $locked_spec = array(
        'type' => 'int',
        'size' => 'tiny',
        'not null' => TRUE,
        'default' => 0,
        'description' => 'A boolean indicating whether the administrator can edit or delete the language.',
      );
      db_add_field('language', 'locked', $locked_spec);
      $max_language_weight = db_query('SELECT MAX(weight) FROM {language}')
        ->fetchField();
      $languages = language_default_locked_languages($max_language_weight);
      foreach ($languages as $language) {
        db_insert('language')
          ->fields(array(
          'langcode' => $language->langcode,
          'name' => $language->name,
          'weight' => $language->weight,
          // These languages are locked, default to enabled.
          'locked' => 1,
        ))
          ->execute();
      }
    }

    // Update the 'language_default' system variable with the langcode change.
    $language_default = variable_get('language_default');
    if (!empty($language_default)) {
      if (isset($language_default->language)) {
        $language_default->langcode = $language_default->language;
        unset($language_default->language);
      }
      unset($language_default->enabled);

      // In D8, the 'language_default' is not anymore an object, but an array,
      // so make sure that the new value that is saved into this variable is an
      // array.
      variable_set('language_default', (array) $language_default);
    }

    // Add column to track customized string status to locales_target.
    // When updating in a non-English language, the locale translation system is
    // triggered, which attempts to query string translations already.
    if (db_table_exists('locales_target') && !db_field_exists('locales_target', 'customized')) {
      $spec = array(
        'type' => 'int',
        'not null' => TRUE,
        'default' => 0,
        // LOCALE_NOT_CUSTOMIZED
        'description' => 'Boolean indicating whether the translation is custom to this site.',
      );
      db_add_field('locales_target', 'customized', $spec);
    }

    // Add locales_location table to track string locations.
    // When updating in a non-English language, this table is used for
    // refreshing JavaScript translations.
    if (db_table_exists('locales_source') && !db_table_exists('locales_location')) {
      $table = array(
        'description' => 'Location information for source strings.',
        'fields' => array(
          'lid' => array(
            'type' => 'serial',
            'not null' => TRUE,
            'description' => 'Unique identifier of this location.',
          ),
          'sid' => array(
            'type' => 'int',
            'not null' => TRUE,
            'description' => 'Unique identifier of this string.',
          ),
          'type' => array(
            'type' => 'varchar',
            'length' => 50,
            'not null' => TRUE,
            'default' => '',
            'description' => 'The location type (file, config, path, etc).',
          ),
          'name' => array(
            'type' => 'varchar',
            'length' => 255,
            'not null' => TRUE,
            'default' => '',
            'description' => 'Type dependent location information (file name, path, etc).',
          ),
          'version' => array(
            'type' => 'varchar',
            'length' => 20,
            'not null' => TRUE,
            'default' => 'none',
            'description' => 'Version of Drupal where the location was found.',
          ),
        ),
        'primary key' => array(
          'lid',
        ),
        'foreign keys' => array(
          'locales_source' => array(
            'table' => 'locales_source',
            'columns' => array(
              'sid' => 'lid',
            ),
          ),
        ),
        'indexes' => array(
          'string_id' => array(
            'sid',
          ),
          'string_type' => array(
            'sid',
            'type',
          ),
        ),
      );
      db_create_table('locales_location', $table);
    }
  }
}