module ActionController::Helpers::ClassMethods

def all_application_helpers

Extract helper names from files in `app/helpers/***/**_helper.rb` 
def all_application_helpers
  all_helpers_from_path(helpers_path)
end

def helper_attr(*attrs)


* `attrs` - Names of attributes to be converted into helpers.
#### Parameters

helper_attr :name
attr_accessor :name
makes them available to the view:
following adds new `name` and `name=` instance methods to a controller and
Declares helper accessors for controller attributes. For example, the 
def helper_attr(*attrs)
  attrs.flatten.each { |attr| helper_method(attr, "#{attr}=") }
end

def helpers

when using `capture`.
[helper](rdoc-ref:AbstractController::Helpers::ClassMethods#helper) instead
incorrect behavior with capture methods. Consider using
Note that the proxy is rendered under a different view context. This may cause

Provides a proxy to access helper methods from outside the view. 
def helpers
  @helper_proxy ||= begin
    proxy = ActionView::Base.empty
    proxy.config = config.inheritable_copy
    proxy.extend(_helpers)
  end
end

def modules_for_helpers(args)


* `array` - A normalized list of modules for the list of helpers provided.
#### Returns


* `args` - A list of helpers
#### Parameters

helpers in helpers_path.
Override modules_for_helpers to accept `:all` as argument, which loads all 
def modules_for_helpers(args)
  args += all_application_helpers if args.delete(:all)
  super(args)
end