Can't get the singleton of a Rails model

rubyonrails-talk
1

class Model < ActiveRecord::Base

  def singleton     class << self       self     end   end

end

m = Model.new m.singleton SystemStackError: stack level too deep..

<a href="http://pastie.org/private/8okkiajm0qwfiwulxg3tjw&quot;&gt;See the complete error.</a>

Why is this?

2

Where did you get that from as a method for creating singletons?

Try this instead:

3

Michael Pavling wrote:

4

Marnen Laibow-Koser wrote:

That's the Singleton pattern. I think the OP wanted to know how to get a model's singleton class (eigenclass).

Correct.

Unfortunate coincidence of terminology for two completely different things.

Agreed. On a hunch, I looked up Black's precise terminology in The Well-Grounded Rubyist and he defines his method like so:

def singleton_class   ...

I believe some level of confusion may have been avoided had I written as he did. Anywho.

So, Marnen, any idea why AR-inheriting objects do this?