graphql-ruby.md

name	description	github	gem
graphql-ruby	A Ruby library for building GraphQL APIs.	rmosolgo/graphql-ruby	graphql

To run a hello world script with graphql-ruby:

gem install graphql

Then run ruby hello.rb with this code in hello.rb:

require 'graphql'

class QueryType < GraphQL::Schema::Object
  field :hello, String

  def hello
    "Hello world!"
  end
end

class Schema < GraphQL::Schema
  query QueryType
end

puts Schema.execute('{ hello }').to_json

There are also nice bindings for Relay and Rails.