Usual Draper Setup

application_decorator.rb

class ApplicationDecorator < Draper::Decorator
  extend Memoist
  
  delegate_all
  
  def method_added(method_name)
    super
    return if [:[], :initialize, :new].include?(method_name) # those method cannot be memoized
    return if respond_to?(:object_class?) && object_class? && (method_name.to_s == object_class.name.underscore) # do not memoize object alias

    unmemoized_method = Memoist.unmemoized_method_for(method_name)
    return if method_defined?(unmemoized_method) # already memoized
    return if caller.first =~ /memoist\.rb/ # do not memoize proxy method created by memoist
    new_method = instance_method(method_name)
    return if new_method.parameters.map(&:first).any?{|param_type| param_type == :block }

    memoize(method_name)
  end


end