FieldLabelDescriptionTranslation.php

<?php

namespace Drupal\field\Plugin\migrate\source\d6;

use Drupal\migrate_drupal\Plugin\migrate\source\DrupalSqlBase;

// cspell:ignore objectid

/**
 * Drupal 6 i18n field label and description source from database.
 *
 * For available configuration keys, refer to the parent classes.
 *
 * @see \Drupal\migrate\Plugin\migrate\source\SqlBase
 * @see \Drupal\migrate\Plugin\migrate\source\SourcePluginBase
 *
 * @MigrateSource(
 *   id = "d6_field_instance_label_description_translation",
 *   source_module = "i18ncck"
 * )
 */
class FieldLabelDescriptionTranslation extends DrupalSqlBase {

  /**
   * {@inheritdoc}
   */
  public function query() {

    // Get translations for field labels and descriptions.
    $query = $this
      ->select('i18n_strings', 'i18n')
      ->fields('i18n', [
      'property',
      'objectid',
      'type',
    ])
      ->fields('lt', [
      'lid',
      'translation',
      'language',
    ])
      ->condition('i18n.type', 'field');
    $condition = $query
      ->orConditionGroup()
      ->condition('property', 'widget_label')
      ->condition('property', 'widget_description');
    $query
      ->condition($condition);
    $query
      ->innerJoin('locales_target', 'lt', '[lt].[lid] = [i18n].[lid]');
    return $query;
  }

  /**
   * {@inheritdoc}
   */
  public function fields() {
    return [
      'property' => $this
        ->t('Profile field ID.'),
      'lid' => $this
        ->t('Locales target language ID.'),
      'language' => $this
        ->t('Language for this field.'),
      'translation' => $this
        ->t('Translation of either the title or explanation.'),
    ];
  }

  /**
   * {@inheritdoc}
   */
  public function getIds() {
    $ids['property']['type'] = 'string';
    $ids['language']['type'] = 'string';
    $ids['lid']['type'] = 'integer';
    $ids['lid']['alias'] = 'lt';
    return $ids;
  }

}