Conventions for setting up a GraphQL Server on Rails - ApplicationQuery

application_query.rb

# app/queries/application_query.rb
class ApplicationQuery
  include ActiveModel::Model

  # Set up accessors with validations in a single step.
  def self.property(name, options = {})
    attr_accessor name
    validates(name, options[:validates]) if options.key?(:validates)
  end
  
  attr_reader :context

  def initialize(context, attributes = {})
    @context = context
    assign_attributes(attributes)
    raise 'Authorization failed' unless authorized?
  end

  # Let's make it easy to access values in the context.
  def method_missing(name, *args)
    name_symbol = name.to_sym
    context.key?(name_symbol) ? context[name_symbol] : super
  end

  def respond_to_missing?(name, *args)
    context.key?(name.to_sym) || super
  end

  private

  def authorized?
    raise 'Please implement the "authorized?" method in the query class.'
  end
end