const_get

mod.const_get(sym, inherit=true) â obj
mod.const_get(str, inherit=true) â obj

Instance Public methods

Checks for a constant with the given name in mod If inherit is set, the lookup will also search the ancestors (and Object if mod is a Module.)

The value of the constant is returned if a definition is found, otherwise a NameError is raised.

1	`Math.const_get(:PI)` `#=> 3.14159265358979`

This method will recursively look up constant names if a namespaced class name is provided. For example:

module Foo; class Bar; end end
Object.const_get 'Foo::Bar'

The inherit flag is respected on each lookup. For example:

module Foo
  class Bar
    VAL = 10
  end
 
  class Baz < Bar; end
end
 
Object.const_get 'Foo::Baz::VAL'         # => 10
Object.const_get 'Foo::Baz::VAL', false  # => NameError

doc_ruby_on_rails

2025-01-10 15:47:30

Comments