BlockContentViewsData.php

<?php

namespace Drupal\block_content;

use Drupal\views\EntityViewsData;

/**
 * Provides the views data for the block_content entity type.
 */
class BlockContentViewsData extends EntityViewsData {
    
    /**
     * {@inheritdoc}
     */
    public function getViewsData() {
        $data = parent::getViewsData();
        $data['block_content_field_data']['id']['field']['id'] = 'field';
        $data['block_content_field_data']['info']['field']['id'] = 'field';
        $data['block_content_field_data']['info']['field']['link_to_entity default'] = TRUE;
        $data['block_content_field_data']['type']['field']['id'] = 'field';
        $data['block_content_field_data']['table']['wizard_id'] = 'block_content';
        $data['block_content']['block_content_listing_empty'] = [
            'title' => $this->t('Empty block library behavior'),
            'help' => $this->t('Provides a link to add a new block.'),
            'area' => [
                'id' => 'block_content_listing_empty',
            ],
        ];
        // Advertise this table as a possible base table.
        $data['block_content_field_revision']['table']['base']['help'] = $this->t('Block Content revision is a history of changes to block content.');
        $data['block_content_field_revision']['table']['base']['defaults']['title'] = 'info';
        // @todo EntityViewsData should add these relationships by default.
        //   https://www.drupal.org/node/2410275
        $data['block_content_field_revision']['id']['relationship']['id'] = 'standard';
        $data['block_content_field_revision']['id']['relationship']['base'] = 'block_content_field_data';
        $data['block_content_field_revision']['id']['relationship']['base field'] = 'id';
        $data['block_content_field_revision']['id']['relationship']['title'] = $this->t('Block Content');
        $data['block_content_field_revision']['id']['relationship']['label'] = $this->t('Get the actual block content from a block content revision.');
        $data['block_content_field_revision']['revision_id']['relationship']['id'] = 'standard';
        $data['block_content_field_revision']['revision_id']['relationship']['base'] = 'block_content_field_data';
        $data['block_content_field_revision']['revision_id']['relationship']['base field'] = 'revision_id';
        $data['block_content_field_revision']['revision_id']['relationship']['title'] = $this->t('Block Content');
        $data['block_content_field_revision']['revision_id']['relationship']['label'] = $this->t('Get the actual block content from a block content revision.');
        return $data;
    }

}