module ActiveModel::Callbacks

def _define_after_model_callback(klass, callback)
  klass.define_singleton_method("after_#{callback}") do |*args, **options, &block|
    options.assert_valid_keys(:if, :unless, :prepend)
    options[:prepend] = true
    conditional = ActiveSupport::Callbacks::Conditionals::Value.new { |v|
      v != false
    }
    options[:if] = Array(options[:if]) + [conditional]
    set_callback(:"#{callback}", :after, *args, options, &block)
  end
end