CODEWITHSUNDEEP
ruby-on-railsrubydecorator
jmoreira
jmoreira

Reputation: 1606

List of decorated methods when using draper decorators

I need way to get an array of names of all decorated methods created in a draper decorator instance.

If i have two classes like:

class A
  def foo
  end
end

class ADecorator < Draper::Decorator
  def bar
  end

  def hi
  end
end

Then i want to do something like:

decorated = ADecorator.decorate(A.new)
decorated.decorated_methods # => [:bar, :hi]

Closest to this is ruby's builtin instance_methods method but it returns both base object methods and decorator methods (In this example returns [:foo, :bar, :hi])

Upvotes: 0

Views: 765

Answers (1)

davetapley
davetapley

Reputation: 17968

You could monkey patch it in to Draper, e.g:

Put this in config/initializers/draper.rb:

 module DraperExtensions
   def decorated_methods
     instance_methods.to_set - Draper::Decorator.instance_methods.to_set   
   end
 end

 Draper::Decorator.extend DraperExtensions

Then you will be able to call:

ADecorator.decorated_methods

Upvotes: 1

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