FieldLabelDescriptionTranslation.php

<?php

namespace Drupal\field\Plugin\migrate\source\d7;

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

/**
 * Drupal 7 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 = "d7_field_instance_label_description_translation",
 *   source_module = "i18n_field"
 * )
 */
class FieldLabelDescriptionTranslation extends DrupalSqlBase {
    
    /**
     * {@inheritdoc}
     */
    public function query() {
        // Get translations for field labels and descriptions.
        $query = $this->select('i18n_string', 'i18n')
            ->fields('i18n')
            ->fields('lt', [
            'lid',
            'translation',
            'language',
            'plid',
            'plural',
            'i18n_status',
        ])
            ->fields('fci', [
            'id',
            'field_id',
            'field_name',
            'entity_type',
            'bundle',
            'data',
            'deleted',
        ])
            ->condition('i18n.textgroup', 'field');
        $condition = $query->orConditionGroup()
            ->condition('textgroup', 'field')
            ->condition('objectid', '#allowed_values', '!=');
        $query->condition($condition);
        $query->innerJoin('locales_target', 'lt', '[lt].[lid] = [i18n].[lid]');
        $query->leftjoin('field_config_instance', 'fci', '[fci].[bundle] = [i18n].[objectid] AND [fci].[field_name] = [i18n].[type]');
        return $query;
    }
    
    /**
     * {@inheritdoc}
     */
    public function fields() {
        return [
            'lid' => $this->t('Locales target language ID.'),
            'textgroup' => $this->t('A module defined group of translations'),
            'context' => $this->t('Full string ID for quick search: type:objectid:property.'),
            'objectid' => $this->t('Object ID'),
            'type' => $this->t('Object type for this string'),
            'property' => $this->t('Object property for this string'),
            'objectindex' => $this->t('Integer value of Object ID'),
            'format' => $this->t('The {filter_format}.format of the string'),
            'translation' => $this->t('Translation'),
            'language' => $this->t('Language code'),
            'plid' => $this->t('Parent lid'),
            'plural' => $this->t('Plural index number'),
            'i18n_status' => $this->t('Translation needs update'),
            'id' => $this->t('The field instance ID.'),
            'field_id' => $this->t('The field ID.'),
            'field_name' => $this->t('The field name.'),
            'entity_type' => $this->t('The entity type.'),
            'bundle' => $this->t('The entity bundle.'),
            'data' => $this->t('The field instance data.'),
            'deleted' => $this->t('Deleted'),
        ];
    }
    
    /**
     * {@inheritdoc}
     */
    public function getIds() {
        $ids['property']['type'] = 'string';
        $ids['language']['type'] = 'string';
        $ids['lid']['type'] = 'integer';
        $ids['lid']['alias'] = 'lt';
        return $ids;
    }

}