Allow GraphQL endpoint to be conditionally included. Closes #209

README.md

@@ -26,7 +26,8 @@ bin/rails generate solidus_graphql_api:install
 ```
 
 Unlike the REST API which has a variety of endpoints, the GraphQL API has a
-single endpoint accessible under `/graphql`.
+single endpoint accessible under `/graphql`. It will be automatically 
+inserted into your `routes.rb` file after running the generator.
 
 For example in development you can use:
 

config/routes.rb

@@ -1,5 +1,5 @@
 # frozen_string_literal: true
 
-Spree::Core::Engine.routes.draw do
-  post '/graphql', to: 'graphql#execute'
-end
+SolidusGraphqlApi::Engine.routes.draw do
+  post '/', to: 'graphql#execute'
+end

lib/generators/solidus_graphql_api/install/install_generator.rb

@@ -5,6 +5,9 @@ module Generators
     class InstallGenerator < Rails::Generators::Base
       class_option :auto_run_migrations, type: :boolean, default: false
       source_root File.expand_path('templates', __dir__)
+      argument :app_path, type: :string, default: Rails.root
+
+      MOUNT_GRAPHQL_ENGINE = "mount SolidusGraphqlApi::Engine, at: '/graphql'"
 
       def copy_initializer
         template 'initializer.rb', 'config/initializers/solidus_graphql_api.rb'
@@ -22,6 +25,18 @@ def run_migrations
           puts 'Skipping bin/rails db:migrate, don\'t forget to run it!' # rubocop:disable Rails/Output
         end
       end
+
+      def install_routes
+        if Pathname(app_path).join('config', 'routes.rb').read.include? MOUNT_GRAPHQL_ENGINE
+          say_status :route_exist, MOUNT_GRAPHQL_ENGINE, :blue
+        else
+          route <<~RUBY
+            # This line installs graphql's main route to execute queries
+
+            mount SolidusGraphqlApi::Engine, at: '/graphql'
+          RUBY
+        end
+      end
     end
   end
 end