Ruby-on-rails 为什么参数中带点的路由匹配失败？
声明：本页面是StackOverFlow热门问题的中英对照翻译，遵循CC BY-SA 4.0协议，如果您需要使用它，必须同样遵循CC BY-SA许可，注明原文地址和作者信息，同时你必须将它归于原作者（不是我）：StackOverFlow
原文地址: http://stackoverflow.com/questions/5369654/
Warning: these are provided under cc-by-sa 4.0 license. You are free to use/share it, But you must attribute it to the original authors (not me):
StackOverFlow
Why do routes with a dot in a parameter fail to match?
提问by iGEL
I've got an route for my users like /iGEL/contributions, which works fine. But now a user registered with a name like 'A.and.B.', and now the route fails to match, since the name contains dots.
我为我的用户提供了一条路线，例如/iGEL/contributions，效果很好。但是现在一个用户注册了一个像“A.and.B.”这样的名字，现在路由无法匹配，因为名字包含点。
My route:
我的路线：
get "/:user/contributions" => 'users#contributions'
Any ideas?
有任何想法吗？
回答by Zabba
See the blue info box here:
请参阅此处的蓝色信息框：
By default dynamic segments don't accept dots – this is because the dot is used as a separator for formatted routes. If you need to use a dot within a dynamic segment add a constraint which overrides this – for example
:id => /[^\/]+/allows anything except a slash.
默认情况下，动态段不接受点——这是因为点被用作格式化路由的分隔符。如果您需要在动态段中使用一个点，请添加一个覆盖它的约束——例如，
:id => /[^\/]+/允许除斜杠之外的任何内容。
That would for example be:
例如，这将是：
get "/:user/contributions" => 'users#contributions', :constraints => { :user => /[^\/]+/ }
回答by Christopher Oezbek
If your variable segment is the last one, then using the [^\/]regex will also eat the format. In such a case rather use:
如果您的变量段是最后一个，那么使用[^\/]正则表达式也会占用格式。在这种情况下，而是使用：
/([^\/]+?)(?=\.json|\.html|$|\/)/
回答by huntsfromshadow
Looks like the following link answers your question.
看起来以下链接回答了您的问题。
