entity_agree-2.0.x-dev/src/Plugin/views/relationship/AgreementRelationship.php

<?php

namespace Drupal\entity_agree\Plugin\views\relationship;

use Drupal\Core\Form\FormStateInterface;
use Drupal\entity_agree\Plugin\views\AgreementViewsPluginTrait;
use Drupal\views\Plugin\views\relationship\RelationshipPluginBase;
use Symfony\Component\DependencyInjection\ContainerInterface;

/**
 * Relationship handler to return the taxonomy terms of nodes.
 *
 * @ViewsRelationship("entity_agree_agreement")
 */
class AgreementRelationship extends RelationshipPluginBase {

  use AgreementViewsPluginTrait;

  /**
   * {@inheritdoc}
   */
  public static function create(ContainerInterface $container, array $configuration, $plugin_id, $plugin_definition) {
    $relationship = parent::create($container, $configuration, $plugin_id, $plugin_definition);
    $relationship->agreementManager = $container->get('entity_agree.agreement_manager');
    $relationship->entityRepository = $container->get('entity.repository');
    return $relationship;
  }

  /**
   * {@inheritdoc}
   */
  public function defineOptions() {
    return $this->defineAgreementOption(parent::defineOptions());
  }

  /**
   * {@inheritdoc}
   */
  public function buildOptionsForm(&$form, FormStateInterface $form_state) {
    $form['agreement'] = $this->buildAgreementOptionElement($this->options['agreement']);
    parent::buildOptionsForm($form, $form_state);
  }

  /**
   * {@inheritdoc}
   */
  public function validate() {
    return $this->validateAgreement();
  }

  /**
   * {@inheritdoc}
   */
  public function query() {
    if (!$agreement = $this->getAgreementEntity()) {
      return;
    }

    $this->ensureMyTable();

    $def = $this->definition;
    $def['table'] = $this->definition['base'];
    $def['field'] = 'uid';
    $def['left_table'] = $this->tableAlias;
    $def['left_field'] = $this->realField;
    $def['adjusted'] = TRUE;
    if (!empty($this->options['required'])) {
      $def['type'] = 'INNER';
    }
    $def['extra'] = [
      ['field' => 'entity_type_id', 'value' => $agreement->getEntityTypeId()],
      ['field' => 'entity_vid', 'value' => $agreement->getRevisionId()],
    ];

    $join = \Drupal::service('plugin.manager.views.join')->createInstance('standard', $def);
    $alias = $def['table'] . '_' . $this->table;
    $this->alias = $this->query->addRelationship($alias, $join, $this->definition['base'], $this->relationship);
  }

}