Refactor GraphqlController

app/controllers/graphql_controller.rb

@@ -1,5 +1,4 @@
 class GraphqlController < ApplicationController
-  attr_accessor :query_variables, :query_string
 
   skip_before_action :verify_authenticity_token
   skip_authorization_check
@@ -8,19 +7,7 @@ class GraphqlController < ApplicationController
 
   def query
     begin
-      # ------------------------------------------------------------------------
-      api_types_creator = GraphQL::ApiTypesCreator.new(API_TYPE_DEFINITIONS)
-      created_api_types = api_types_creator.create
-
-      query_type_creator = GraphQL::QueryTypeCreator.new(created_api_types)
-      query_type = query_type_creator.create
-
-      consul_schema = GraphQL::Schema.define do
-        query query_type
-        max_depth 12
-      end
-      # ------------------------------------------------------------------------
-      set_query_environment
+      if query_string.nil? then raise GraphqlController::QueryStringError end
       response = consul_schema.execute query_string, variables: query_variables
       render json: response, status: :ok
     rescue GraphqlController::QueryStringError
@@ -32,25 +19,25 @@ class GraphqlController < ApplicationController
 
   private
 
-    def set_query_environment
-      set_query_string
-      set_query_variables
+    def consul_schema
+      api_types = GraphQL::ApiTypesCreator.new(API_TYPE_DEFINITIONS).create
+      query_type = GraphQL::QueryTypeCreator.new(api_types).create
+
+      GraphQL::Schema.define do
+        query query_type
+        max_depth 12
+      end
     end
 
-    def set_query_string
+    def query_string
       if request.headers["CONTENT_TYPE"] == 'application/graphql'
-        @query_string = request.body.string  # request.body.class => StringIO
+        request.body.string  # request.body.class => StringIO
       else
-        @query_string = params[:query]
+        params[:query]
       end
-      if query_string.nil? then raise GraphqlController::QueryStringError end
     end
 
-    def set_query_variables
-      if params[:variables].blank?
-        @query_variables = {}
-      else
-        @query_variables = JSON.parse(params[:variables])
-      end
+    def query_variables
+      params[:variables].blank? ? {} : JSON.parse(params[:variables])
     end
 end