Conventions for setting up a GraphQL Server on Rails - Routes & controllers

routes_and_controller.rb

# config/routes.rb
if Rails.env.development?
  mount GraphiQL::Rails::Engine, at: "/graphiql", graphql_path: "/graphql"
end

post "/graphql", to: "graphql#execute"

# app/controllers/graphql_controller.rb
class GraphqlController < ApplicationController
  def execute
    variables = ensure_hash(params[:variables])
    query = params[:query]
    operation_name = params[:operationName]
    
    context = {
      # Query context goes here, for example:
      # current_user: current_user,
    }
    
    # This is the interesting part. Notice how the schema class is being asked to execute the incoming query.
    result = MyRailsAppSchema.execute(query, variables: variables, context: context, operation_name: operation_name)
    
    render json: result
  rescue => e
    raise e unless Rails.env.development?
    handle_error_in_development e
  end
end