Add default protocol for urls

app/controllers/application_controller.rb

@@ -3,5 +3,8 @@ class ApplicationController < ActionController::Base
   # For APIs, you may want to use :null_session instead.
   protect_from_forgery with: :exception
 
-
+  def default_url_options
+    return { protocol: 'https' } if Rails.env.staging? || Rails.env.production?
+    {}
+  end
 end