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module ActionController::Helpers::ClassMethods

Public Instance Methods

all_helpers_from_path(path) Show source 
# File actionpack/lib/action_controller/metal/helpers.rb, line 101
def all_helpers_from_path(path)
  helpers = Array(path).flat_map do |_path|
    extract = /^#{Regexp.quote(_path.to_s)}\/?(.*)_helper.rb$/
    names = Dir["#{_path}/**/*_helper.rb"].map { |file| file.sub(extract, '\1'.freeze) }
    names.sort!
  end
  helpers.uniq!
  helpers
end

Returns a list of helper names in a given path.

ActionController::Base.all_helpers_from_path 'app/helpers'
# => ["application", "chart", "rubygems"]
helper_attr(*attrs) Show source 
# File actionpack/lib/action_controller/metal/helpers.rb, line 71
def helper_attr(*attrs)
  attrs.flatten.each { |attr| helper_method(attr, "#{attr}=") }
end

Declares helper accessors for controller attributes. For example, the following adds new name and name= instance methods to a controller and makes them available to the view:

attr_accessor :name
helper_attr :name

Parameters

  • attrs - Names of attributes to be converted into helpers.

helpers() Show source 
# File actionpack/lib/action_controller/metal/helpers.rb, line 76
def helpers
  @helper_proxy ||= begin
    proxy = ActionView::Base.new
    proxy.config = config.inheritable_copy
    proxy.extend(_helpers)
  end
end

Provides a proxy to access helper methods from outside the view.

modules_for_helpers(args) Show source 
# File actionpack/lib/action_controller/metal/helpers.rb, line 92
def modules_for_helpers(args)
  args += all_application_helpers if args.delete(:all)
  super(args)
end

Overwrite #modules_for_helpers to accept :all as argument, which loads all helpers in helpers_path.

Parameters

  • args - A list of helpers

Returns

  • array - A normalized list of modules for the list of helpers provided.

Calls superclass method

© 2004–2018 David Heinemeier Hansson
Licensed under the MIT License.