How to run Javascript function on the Current page through the Application Controller?

Question

I’m doing a browser validation (IE < 10) through the Application Controller with the gem "browser". I need any application page that is accessed to run a Javascript function with a message saying that the browser is not recommended.

Any idea, suggestion or other way to do it dynamically?

Code:

class ApplicationController < ActionController::Base
  before_action :is_ie_browser?

  def is_ie_browser?
    if browser.ie? && browser.version.to_i < 10
      #executar uma funcao
    end
  end
end

Answer 1

You don’t need to Gem or go through the Rails.

Place a function in your Avascripts that checks and gives the message.

Using jquery is simple:

http://api.jquery.com/jquery.browser/