Question

How do I determine the current open class in Ruby?

Answer 1

Inside of a class definition body, self refers to the class itself. Module#name will tell you the name of the class/module, but only if it actually has one. (In Ruby, there is no such thing as a “class name”. Classes are simply objects just like any other which get assigned to variables just like any other. It’s just that if you happen to assign a class object to a constant, then the name method will return the name of that constant.)

Example:

puts class Foo
  name
end
# Foo

But:

bar = Class.new
bar.name # => nil
BAR = bar
bar.name #=> 'BAR'