Created controller and route to answer GraphQL queries

app/controllers/graphql_controller.rb

@@ -0,0 +1,11 @@
+class GraphqlController < ApplicationController
+
+  def query
+    #puts "I'm the GraphqlController inside the #query action!!"
+
+    render json: ConsulSchema.execute(
+      params[:query],
+      variables: params[:variables] || {}
+    )
+  end
+end

config/routes.rb

@@ -262,6 +262,11 @@ Rails.application.routes.draw do
     end
   end
 
+  # GraphQL
+  mount GraphiQL::Rails::Engine, at: "/graphiql", graphql_path: "/queries"
+  post '/queries', to: 'graphql#query'
+
+
   if Rails.env.development?
     mount LetterOpenerWeb::Engine, at: "/letter_opener"
   end