How do I get class-object from string “A::B::C” in Ruby?

Question

The following example fails

class A
  class B
  end
end
p Object.const_get \'A\' # => A
p Object.const_get \'A::B\' # => NameError: wrong constant name A::         


        

Answer 1

Extlib provides a full_const_get method, which does just this.

http://github.com/datamapper/extlib/blob/master/lib/extlib/object.rb#L67

You could either include extlib, or copy this implementation and use it yourself (assuming the licensing is compatible with whatever you're using it for)