Lift If LocParam 奇怪的行为
lift框架中有一个LocParam If。我想知道它是如何工作的。我有一个简单的菜单，其中包含几个项目，如下所示：
val scanning = Menu(Loc("scanning","user" :: "scanning" :: Nil,
S ? "scanning",LocGroup("user")))效果很好，但是当我添加 If 时，会出现奇怪的行为。首先， 标签中呈现的标签不正确，它们取自其他 Menu 定义。 （我看到的不是资源键“扫描”的内容，而是 S ?“主页”的内容）。其次，我认为它不起作用，条件应该将 /user/scanning 上的所有访问重定向到 / 因为条件每次都是 false，并且它只是让底层代码片段呈现自身，就好像没有任何条件一样。
val scanning = Menu(Loc("scanning","user" :: "scanning" :: Nil,
S ? "scanning",LocGroup("user"),If(() => false,() => RedirectResponse("/"))))there is a LocParam If in lift framework. I'm wondering how it is meant to work. I have a simple menu of several items like this one:
val scanning = Menu(Loc("scanning","user" :: "scanning" :: Nil,
S ? "scanning",LocGroup("user")))which works just good, but when I add the If, there is weird behaviour. Firstly, the labels that are rendered in the <a> tag are not correct, they are taken from other Menu definitions. (Instead of the content of resource key "scanning", I see the contents of S ? "homepage"). Secondly, it just doesn't work, I assume, that the condition should redirect all accesses on /user/scanning to / since the condition is false everytime and it just lets the underlying snippet to render itself as if there wasn't any condition.
val scanning = Menu(Loc("scanning","user" :: "scanning" :: Nil,
S ? "scanning",LocGroup("user"),If(() => false,() => RedirectResponse("/"))))如果你对这篇内容有疑问，欢迎到本站社区发帖提问 参与讨论，获取更多帮助，或者扫码二维码加入 Web 技术交流群。
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这告诉电梯永远不会显示您的菜单条目。所以你看到的可能是一个不同的条目......
That tells lift to never show your menu entry. So what you see is probably a different entry...