ExampleSchemaExtension.php in GraphQL 8.4

Namespace

Drupal\graphql_examples\Plugin\GraphQL\SchemaExtension

File

examples/graphql_example/src/Plugin/GraphQL/SchemaExtension/ExampleSchemaExtension.php

<?php

namespace Drupal\graphql_examples\Plugin\GraphQL\SchemaExtension;

use Drupal\graphql\GraphQL\ResolverBuilder;
use Drupal\graphql\GraphQL\ResolverRegistryInterface;
use Drupal\graphql\Plugin\GraphQL\SchemaExtension\SdlSchemaExtensionPluginBase;

/**
 * @SchemaExtension(
 *   id = "example_extension",
 *   name = "Example extension",
 *   description = "A simple extension that adds node related fields.",
 *   schema = "example"
 * )
 */
class ExampleSchemaExtension extends SdlSchemaExtensionPluginBase {

  /**
   * {@inheritdoc}
   */
  public function registerResolvers(ResolverRegistryInterface $registry) : void {
    $builder = new ResolverBuilder();
    $this
      ->addQueryFields($registry, $builder);
    $this
      ->addPageFields($registry, $builder);
  }

  /**
   * @param \Drupal\graphql\GraphQL\ResolverRegistryInterface $registry
   * @param \Drupal\graphql\GraphQL\ResolverBuilder $builder
   */
  protected function addPageFields(ResolverRegistryInterface $registry, ResolverBuilder $builder) : void {
    $registry
      ->addFieldResolver('Page', 'id', $builder
      ->produce('entity_id')
      ->map('entity', $builder
      ->fromParent()));
    $registry
      ->addFieldResolver('Page', 'title', $builder
      ->compose($builder
      ->produce('entity_label')
      ->map('entity', $builder
      ->fromParent()), $builder
      ->produce('uppercase')
      ->map('string', $builder
      ->fromParent())));
  }

  /**
   * @param \Drupal\graphql\GraphQL\ResolverRegistryInterface $registry
   * @param \Drupal\graphql\GraphQL\ResolverBuilder $builder
   */
  protected function addQueryFields(ResolverRegistryInterface $registry, ResolverBuilder $builder) : void {
    $registry
      ->addFieldResolver('Query', 'page', $builder
      ->produce('entity_load')
      ->map('type', $builder
      ->fromValue('node'))
      ->map('bundles', $builder
      ->fromValue([
      'page',
    ]))
      ->map('id', $builder
      ->fromArgument('id')));
  }

}

Classes

Name	Description
ExampleSchemaExtension	Plugin annotation @SchemaExtension( id = "example_extension", name = "Example extension", description = "A simple extension that adds node related fields.", schema = "example" )