How to define Rails Helper for one specific action?

I have a LabelTagHelper with a custom label_tag method, but I only need this me开发者_StackOverflow社区thod in my new, create, edit and update actions.

Is there a way to define this helper only for a specific action? Something like helper :label_tag, :only => [:new, :create, :update, :destroy]? Or it is safe to call self.class.helper :label_tag in a before_filter?

rails Helpers should be just formatters. Think of it just as functions that will decorate your presentation layer (view)

So having helpers as :before_filter doesn't make any sense. As controllers actions often involves some server side processing.

So call your helper as and when you want. So there is no need to add helpers only for a specific action. as I mentioned earlier helpers and controller/ model actions should be mutually exclusive

BTW, could you elaborate your requirement, why you want to restrict your helper

HTH

sameera

try this,

Have a helper method like this (in my case i used a helper called 'ProjectsHelper')

module ProjectsHelper
  def label_tag *params
    if controller.action_name == "index"
      #user custom implementation
    else
      super
    end

  end
end

This is working... hope this is what you need,

cheers

HTH

sameera

NOTE: sorry for not updating the existing answer. Since this is completely new approach thought of having it as a separate answer