Ruby. How do I know which method of an instance of a class is defined?

Question

I want to know which class method_missing is defined. It is defined in Object.

How can I determine which class in the hierarchy is overriding it?

+3

Zhang kai yu 25 nov. 14 at 8:19

1 answer

Marek Lipka · Accepted Answer · 2014-11-25T08:24:14+0000

You can use a method UnboundMethod#owner

to check where this method is implemented:

class A
  def method_missing(*args)
    # do something
  end
end
method = A.instance_method(:method_missing)
method.owner
# => A

Note. If the method is implemented in a module (which is later placed in the class hierarchy somewhere), owner

this module will be returned.