Rails way to detect mobile device?

Question

Is there a "rails way" to detect whether the user is using a mobile device? What I mean is a method I can use in erb, something like this:

<% if mobile? %>

Answer 1

You can do it that way by defining a function like below:

def mobile_device?   if session[:mobile_param]     session[:mobile_param] == "1"   else     request.user_agent =~ /Mobile|webOS/   end end 

Or you can use gems to detect mobile devices like

• https://github.com/tscolari/mobylette
• https://github.com/shenoudab/active_device

Answer 2

Use browser gem. You are able to detect the browser by the custom user_agent.