根据用户是否已经登录来切换登录/注销 [英] Toggle Login/Logout based on if user is already logged in

问题描述

我有戏！ Web应用程序.如果用户已登录，我想在顶部菜单中显示注销"链接.如果用户未登录，我想隐藏注销"链接，而是显示登录"链接.容易吧?但是，我找不到有关如何实际执行此操作的信息.

I have a Play! web application. If the user is logged in, I would like to show a "Logout" link in the top menu. If the user is not logged in, I'd like to hide the "Logout" link and show a "Login" link instead. Easy, right? However, I am unable to find information on how to actually do this.

那么，我将如何处理呢?我以yabe网络应用程序为例.是否有一个等效的#{secure.check}来检查用户是否已经登录?最简单的方法是什么?

So, how would I go about this? I used the yabe web app as an example. Is there a #{secure.check} equivalent to check if the user has already logged in? What's the easiest way?

我们将不胜感激，这真让我发疯！

Help would be greatly appreciated, this is driving me nuts!

推荐答案

非常简单:

#{if session.connected()}

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