ruby convert class name in string to actual class

Question

How do I call a class from a string containing that class name inside of it? (I guess I could do case/when but that seems ugly.)

The reason I ask is because I\'m us

Answer 1

I know this is an old question but I just want to leave this note, it may be helpful for others.

In plain Ruby, Module.const_get can find nested constants. For instance, having the following structure:

module MyModule
  module MySubmodule
    class MyModel
    end
  end
end

You can use it as follows:

Module.const_get("MyModule::MySubmodule::MyModel")
MyModule.const_get("MySubmodule")
MyModule::MySubmodule.const_get("MyModel")