Optimisation: pages are displayed without layout, when called from a xhr request.

Should be useful to speed up paginations

app/controllers/application_controller.rb

@@ -5,6 +5,8 @@ class ApplicationController < ActionController::Base
   # For APIs, you may want to use :null_session instead.
   protect_from_forgery prepend: true, with: :exception
 
+  layout :handle_xhr_layout
+
   private
 
   def set_locale
@@ -26,4 +28,9 @@ class ApplicationController < ActionController::Base
   def set_mailer_host
     ActionMailer::Base.default_url_options[:host] = request.host_with_port
   end
+
+  # If the request is an xhr, we don't render any layout
+  def handle_xhr_layout
+    request.xhr? ? false : 'application'
+  end
 end