GraphQL API for Drupal 7

The problems

All the cool thing seems to be happening on Drupal 8 which are includes GraphQL.

This module attempt bring GraphQL to Drupal 7.

For Drupal 8, you should use http://drupal.org/project/graphql

The tools

• GraphQL - http://graphql.org/
• graphql-php - https://github.com/webonyx/graphql-php
• Drupal 7 - https://www.drupal.org/project/drupal
• Entity API - https://www.drupal.org/project/entity
• Composer Manager - https://www.drupal.org/project/composer_manager
• X Autoload - https://www.drupal.org/project/xautoload
• GraphIQL Feen - https://chrome.google.com/webstore/detail/graphiql-feen/mcbfdonlkfpbfdpi…

The plans

1. Create module graphql_api
2. Create class Drupal\grapql\_api\Schema to build GraphQL schema
   • use hook_entity_info(), hook_entity_property_info() to build GraphQL schema
   • map Drupal concept to GraphQL concept
     • Entity type -> Interface
     • Entity bundle -> Object
     • Entity revision -> Object
     • Property, Field API -> Property
   • resolve relationship use entity metadata info
     • Base field uid -> Inteface: user
     • Base field rid -> Object: revision
     • Field API: term_reference -> Interface: term
     • Field API: entityreference -> Interface/Object target entity
     • Field API: relation -> Interface/Object target entity
3. Create GraphQL endpoint /graphql
   • receive POST content with GrapQL query and variables
   • execute query and return result