knshiro

# frozen_string_literal: true
class AssociationLoader < GraphQL::Batch::Loader
  attr_reader :klass, :association

  def initialize(klass, association)
    raise ArgumentError, "association to load must be a symbol (got #{association.inspect})" unless association.is_a?(Symbol)
    raise ArgumentError, "cannot load associations for class #{klass.name}" unless klass < ActiveRecord::Base
    raise TypeError, "association #{association} does not exist on #{klass.name}" unless klass.reflect_on_association(association)

    @klass = klass