AggregatorFeedViewsData.php

<?php

namespace Drupal\aggregator;

use Drupal\views\EntityViewsData;

/**
 * Provides the views data for the aggregator feed entity type.
 */
class AggregatorFeedViewsData extends EntityViewsData {
    
    /**
     * {@inheritdoc}
     */
    public function getViewsData() {
        $data = parent::getViewsData();
        $data['aggregator_feed']['table']['join'] = [
            'aggregator_item' => [
                'left_field' => 'fid',
                'field' => 'fid',
            ],
        ];
        $data['aggregator_feed']['fid']['help'] = $this->t('The unique ID of the aggregator feed.');
        $data['aggregator_feed']['fid']['argument']['id'] = 'aggregator_fid';
        $data['aggregator_feed']['fid']['argument']['name field'] = 'title';
        $data['aggregator_feed']['fid']['argument']['numeric'] = TRUE;
        $data['aggregator_feed']['fid']['filter']['id'] = 'numeric';
        $data['aggregator_feed']['title']['help'] = $this->t('The title of the aggregator feed.');
        $data['aggregator_feed']['title']['field']['default_formatter'] = 'aggregator_title';
        $data['aggregator_feed']['argument']['id'] = 'string';
        $data['aggregator_feed']['url']['help'] = $this->t('The fully-qualified URL of the feed.');
        $data['aggregator_feed']['link']['help'] = $this->t('The link to the source URL of the feed.');
        $data['aggregator_feed']['checked']['help'] = $this->t('The date the feed was last checked for new content.');
        $data['aggregator_feed']['description']['help'] = $this->t('The description of the aggregator feed.');
        $data['aggregator_feed']['description']['field']['click sortable'] = FALSE;
        $data['aggregator_feed']['modified']['help'] = $this->t('The date of the most recent new content on the feed.');
        return $data;
    }

}