token不对的话，那就跳转到登陆页面

app/controllers/application_controller.rb

@@ -663,7 +663,8 @@ class ApplicationController < ActionController::Base
     if api_request?
       logger.error "Form authenticity token is missing or is invalid. API calls must include a proper Content-type header (text/xml or text/json)."
     end
-    render_error "Invalid form authenticity token."
+    #render_error "Invalid form authenticity token."
+    redirect_to signin_path(:login=>true)
   end
 
   def render_feed(items, options={})