instance method `constantize`

Ruby on Rails 8.0.4

Since v2.2.3

Available in: v2.2.3 v2.3.18 v3.0.20 v3.1.12 v3.2.22.5 v4.0.13 v4.1.16 v4.2.9 v5.2.8.1 v6.0.6 v6.1.7.10 v7.0.10 v7.1.6 v7.2.3 v8.0.4 v8.1.2

Compare with:

constantize(camel_cased_word)

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

constantize('Module')   # => Module
constantize('Foo::Bar') # => Foo::Bar

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 name is not in CamelCase or the constant is unknown.

Parameters

camel_cased_word req

Source

# File activesupport/lib/active_support/inflector/methods.rb, line 289
    def constantize(camel_cased_word)
      Object.const_get(camel_cased_word)
    end

Defined in activesupport/lib/active_support/inflector/methods.rb line 289 · View on GitHub · Improve this page · Find usages on GitHub

Defined in ActiveSupport::Inflector

Signature

Parameters