Ruby current class

Inside the class itself:

class_name = self.class

On an initialized object named obj:

class_name = obj.class

if you have obj = SomeClass.new you get the class with obj.class

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'