Feature #7876: Add method for accessing Class from within Singleton Class

• Status: Closed
• Assignee: matz (Yukihiro Matsumoto)
• Target version: -

[wardrop (Tom Wardrop)]

=begin
I'm quite surprised I haven't run into this sooner, but I seem to have just discovered that there's no means by which you can access the outer Class object once inside the context of the Singleton Class. Take the following example; how would I get a reference to (({Test})) from within the singleton?

class Test
class << self
# How do I get a reference to Test from here?
end
end

I assume the answer is that there is no reliable way, hence the reason for this request. Could we add a method to the singleton class that allows access to the "outer" class, e.g.

class Test
class << self
self.outerclass
end
end

Thoughts?
=end

[ko1 (Koichi Sasada)]

• Category set to core
• Assignee set to matz (Yukihiro Matsumoto)
• Target version set to 2.6

[duerst (Martin Dürst)]

This should be possible with Module#ancestors. Maybe not totally slick, but possible.

[naruse (Yui NARUSE)]

• Target version deleted (2.6)

[hsbt (Hiroshi SHIBATA)]

• Status changed from Open to Assigned

[Earlopain (Earlopain _)]

• Related to Feature #12084: `Class#instance` added

[Earlopain (Earlopain _)]

• Status changed from Assigned to Closed

Implemented as attached_object in https://bugs.ruby-lang.org/issues/12084

class Test
  class << self
    p attached_object # => Test
  end
end