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rubydelegation

How do you delegate class methods?

I would like to make a class which delegates all instance and class methods to another class. My aim is to be able to give a class which is set in the app options a name which appears to fit in with the code around it.

This is what I have so far:

require 'delegate'

class Page < DelegateClass(PageAdapter)
  # Empty
end

However, this only seems to delegate instance methods, not class methods.

Solution

  • You don't want delegation, you want direct subclassing:

    class Page < PageAdapter
  # Empty
end

    Proof:

    class Foo
  def self.cats?
    "YES"
  end
  def armadillos?
    "MAYBE"
  end
end

class Bar < Foo; end

p Bar.new.armadillos?
#=> "MAYBE"

p Bar.cats?
#=> "YES"