How do I find the name of the namespace or module 'Foo' in the filter below?
class ApplicationController < ActionController::Base
def get_module_name
@module_name = ???
end
end
class Foo::BarController < ApplicationController
before_filter :get_module_name
end
None of these solutions consider a constant with multiple parent modules. For instance:
A::B::C
As of Rails 3.2.x you can simply:
"A::B::C".deconstantize #=> "A::B"
As of Rails 3.1.x you can:
constant_name = "A::B::C"
constant_name.gsub( "::#{constant_name.demodulize}", '' )
This is because #demodulize is the opposite of #deconstantize:
"A::B::C".demodulize #=> "C"
If you really need to do this manually, try this:
constant_name = "A::B::C"
constant_name.split( '::' )[0,constant_name.split( '::' ).length-1]