Returns a module with all the helpers defined for the engine.
# File railties/lib/rails/engine.rb, line 482
def helpers
@helpers ||= begin
helpers = Module.new
all = ActionController::Base.all_helpers_from_path(helpers_paths)
ActionController::Base.modules_for_helpers(all).each do |mod|
helpers.send(:include, mod)
end
helpers
end
end