使 Rails 资源和自定义路由冲突发挥作用
我是 Rails 新手，想知道如何才能完成这项工作。我希望 URL 看起来像这样：
http://localhost:3000/businesses/coldfire-gundam
使用此路由：
match "/businesses/:permalink", :to => "businesses#show", :as => :business_permalink
但是，当我将此路由放在此之前时：
resources :businesses
任何对 /businesses/1 (1 as param[:id]) 的调用都不再起作用，显然是因为它被永久链接声明
我怎样才能让它工作呢？
I am new to rails and was wondering how I can make this work. I want a URL to look like this:
http://localhost:3000/businesses/coldfire-gundam
using this route:
match "/businesses/:permalink", :to => "businesses#show", :as => :business_permalink
however when I place this route before this:
resources :businesses
any call to /businesses/1 (1 as param[:id]) does not work anymore, obviously because it is caught by the permalink declaration
how can I make it work then?
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评论（2）
您需要一种方法来区分
/businesses/:id和/businesses/:permalink。:id应始终为数字（当然，除非您使用 MongoDB），因此如果您可以强制:permalink始终包含非数字内容，那么一个简单的 < code>:constraints 应该可以解决问题：/.*\D/强制路由仅在:permalink包含至少一个非数字时匹配特点。您需要.*因为路由正则表达式隐式锚定在开头。如果您碰巧使用 MongoDB，那么您的
:id可能是十六进制 BSON ID，因此您需要使用/.*\H/作为约束，并且您想要某种方法来确保您的:permalink始终包含至少一个非十六进制字符。一切就绪后，您可以将
match "/businesses/:permalink"放在routes.rb中的resources :businesses之前，一切都应该工作正常。路由的检查顺序与它们在routes.rb中出现的顺序相同，因此您需要在resources之前添加match。You need a way to differentiate
/businesses/:idand/businesses/:permalink. The:idshould always be numeric (unless of course you're using MongoDB) so if you can force your:permalinkto always contain something non-numeric then a simple:constraintsshould do the trick:The
/.*\D/forces the route to only match if:permalinkcontains at least one non-numeric character. You need the.*because route regexes are implicitly anchored at the beginning.If you happen to be using MongoDB then your
:idwill probably be a hex BSON ID so you'd want to use/.*\H/as your constraint and you'd want some way to ensure that your:permalinkalways contains at least one non-hex character.Once all that's in place you can put your
match "/businesses/:permalink"before yourresources :businessesinroutes.rband everything should work fine. And routes are checked in the same order that they appear inroutes.rbso you will want yourmatchbefore yourresources.我建议使用Friendly_id gem 来创建永久链接路由。这将以一种易于重用的方式为您处理大部分“魔法”。
gem 和 Railscast 的资源：
https://github.com/norman/friend_id
http://railscasts.com/episodes/314-pretty-urls-with-friendidid
I would suggest using the friendly_id gem for creating permalink routes. This will handle most of the 'magic' for you in an easily reusable way.
Resources for the gem and railscast:
https://github.com/norman/friendly_id
http://railscasts.com/episodes/314-pretty-urls-with-friendlyid