method

constantize

v8.1.1 - Show latest stable - Class: String
constantize()
public

constantize tries to find a declared constant with the name specified in the string. It raises a NameError when the name is not in CamelCase or is not initialized.

'Module'.constantize  # => Module
'Class'.constantize   # => Class
'blargle'.constantize # => NameError: wrong constant name blargle

See ActiveSupport::Inflector.constantize.