' . t('The Migrate Drupal module provides a framework based on the Migrate module to facilitate migration from a Drupal (6, 7, or 8) site to your website. It does not provide a user interface. For more information, see the online documentation for the Migrate Drupal module.', [':migrate' => Url::fromRoute('help.page', ['name' => 'migrate'])->toString(), ':migrate_drupal' => 'https://www.drupal.org/documentation/modules/migrate_drupal']) . '
'; return $output; } } /** * Implements hook_migration_plugins_alter(). */ function migrate_drupal_migration_plugins_alter(array &$definitions) { $module_handler = \Drupal::service('module_handler'); $migration_plugin_manager = \Drupal::service('plugin.manager.migration'); // This is why the deriver can't do this: the 'd6_taxonomy_vocabulary' // definition is not available to the deriver as it is running inside // getDefinitions(). if (isset($definitions['d6_taxonomy_vocabulary'])) { $vocabulary_migration_definition = [ 'source' => [ 'ignore_map' => TRUE, 'plugin' => 'd6_taxonomy_vocabulary', ], 'destination' => [ 'plugin' => 'null', ], 'idMap' => [ 'plugin' => 'null', ], ]; $vocabulary_migration = $migration_plugin_manager->createStubMigration($vocabulary_migration_definition); $translation_active = $module_handler->moduleExists('content_translation'); try { $source_plugin = $vocabulary_migration->getSourcePlugin(); if ($source_plugin instanceof RequirementsInterface) { $source_plugin->checkRequirements(); } $executable = new MigrateExecutable($vocabulary_migration); $process = ['vid' => $definitions['d6_taxonomy_vocabulary']['process']['vid']]; foreach ($source_plugin as $row) { $executable->processRow($row, $process); $source_vid = $row->getSourceProperty('vid'); $plugin_ids = [ 'd6_term_node:' . $source_vid, 'd6_term_node_revision:' . $source_vid, ]; if ($translation_active) { $plugin_ids[] = 'd6_term_node_translation:' . $source_vid; } foreach (array_intersect($plugin_ids, array_keys($definitions)) as $plugin_id) { // Match the field name derivation in d6_vocabulary_field.yml. $field_name = substr('field_' . $row->getDestinationProperty('vid'), 0, 32); // The Forum module is expecting 'taxonomy_forums' as the field name // for the forum nodes. The 'forum_vocabulary' source property is // evaluated in Drupal\taxonomy\Plugin\migrate\source\d6\Vocabulary // and is set to true if the vocabulary vid being migrated is the // same as the one in the 'forum_nav_vocabulary' variable on the // source site. $destination_vid = $row->getSourceProperty('forum_vocabulary') ? 'taxonomy_forums' : $field_name; $definitions[$plugin_id]['process'][$destination_vid] = 'tid'; } } } catch (RequirementsException $e) { // This code currently runs whenever the definitions are being loaded and // if you have a Drupal 7 source site then the requirements will not be // met for the d6_taxonomy_vocabulary migration. } catch (DatabaseExceptionWrapper $e) { // When the definitions are loaded it is possible the tables will not // exist. } } if (!$module_handler->moduleExists('node')) { return; } $connection = \Drupal::database(); // We need to get the version of the source database in order to check // if the classic or complete node tables have been used in a migration. if (isset($definitions['system_site'])) { // Use the source plugin of the system_site migration to get the // database connection. $migration = $definitions['system_site']; /** @var \Drupal\migrate\Plugin\migrate\source\SqlBase $source_plugin */ $source_plugin = $migration_plugin_manager->createStubMigration($migration) ->getSourcePlugin(); try { $source_connection = $source_plugin->getDatabase(); $version = MigrationConfigurationTrait::getLegacyDrupalVersion($source_connection); } catch (\Exception $e) { \Drupal::messenger() ->addError(t('Failed to connect to your database server. The server reports the following message: %error.