Methods

Instance Public methods

all_helpers_from_path(path)

Returns a list of helper names in a given path.

ActionController::Base.all_helpers_from_path 'app/helpers'
# => ["application", "chart", "rubygems"]
📝 Source code 
# 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
🔎 See on GitHub

helper_attr(*attrs)

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.

📝 Source code 
# File actionpack/lib/action_controller/metal/helpers.rb, line 71
      def helper_attr(*attrs)
        attrs.flatten.each { |attr| helper_method(attr, "#{attr}=") }
      end
🔎 See on GitHub

helpers()

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

📝 Source code 
# 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
🔎 See on GitHub

modules_for_helpers(args)

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.

📝 Source code 
# 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
🔎 See on GitHub