未登录时，竞赛页面点击左侧导航栏“提交”不应报没有权限，应该跳转到登录页面

app/controllers/works_controller.rb

@@ -300,7 +300,11 @@ class WorksController < ApplicationController
 
   #当前用户是不是竞赛的成员
   def member_of_contest
-    render_403 unless @contest.is_public==1 || User.current.member_of_contest?(@contest) || User.current.admin?
+    if !User.current.logged?
+      redirect_to signin_url
+    else
+      render_403 unless @contest.is_public==1 || User.current.member_of_contest?(@contest) || User.current.admin?
+    end
   end
 
 end