Can a mobile mime type fall back to “html” in Rails?

Question

I\'m using this code (taken from here) in ApplicationController to detect iPhone, iPod Touch and iPad requests:

before_filter :detect_mobile_request, :detec         


        

Answer 1

Rails 4.1 includes Variants, this is a great feature that allow you to set different views for the same mime. You can now simply add a before_action and let the variant to do the magic:

before_action :detect_device_variant

def detect_device_variant
  case request.user_agent
  when /iPad/i
    request.variant = :tablet
  when /iPhone/i
    request.variant = :phone
  end
end

Then, in your action:

respond_to do |format|
  format.json
  format.html               # /app/views/the_controller/the_action.html.erb
  format.html.phone         # /app/views/the_controller/the_action.html+phone.erb
  format.html.tablet do
    @some_tablet_specific_variable = "foo"
  end
end

More info here.