Method: Resque#constantize

Defined in:
lib/resque.rb

#constantize(camel_cased_word) ⇒ Object

Tries to find a constant with the name specified in the argument string:

constantize(“Module”) # => Module constantize(“Test::Unit”) # => Test::Unit

The name is assumed to be the one of a top-level constant, no matter whether it starts with “::” or not. No lexical context is taken into account:

C = ‘outside’ module M

C = 'inside'
C # => 'inside'
constantize("C") # => 'outside', same as ::C

end

NameError is raised when the constant is unknown.



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# File 'lib/resque.rb', line 81

def constantize(camel_cased_word)
  camel_cased_word = camel_cased_word.to_s

  if camel_cased_word.include?('-')
    camel_cased_word = classify(camel_cased_word)
  end

  names = camel_cased_word.split('::')
  names.shift if names.empty? || names.first.empty?

  constant = Object
  names.each do |name|
    args = Module.method(:const_get).arity != 1 ? [false] : []

    if constant.const_defined?(name, *args)
      constant = constant.const_get(name)
    else
      constant = constant.const_missing(name)
    end
  end
  constant
end