如何在Rails路线中嵌入多个标签，例如Stack Overflow [英] How to embed multiple tags in Rails routes, like Stack Overflow

问题描述

当选择Stack Overflow上的标签时，该标签将添加到URL的末尾。添加第二个标签，并使用 + 分隔符将其添加到URL的第一个标签之后。例如：

When one selects a tag on Stack Overflow, it is added to the end of the URL. Add a second tag and it is added to the end of the URL after the first Tag, with a + delimiter. For example:

http://stackoverflow.com/questions/tagged/ruby-on-rails+best-practices

这是如何实现的？这是路由增强功能还是 TagsController 中包含的某些逻辑？最后，如何提取这些标记以进行过滤（假设它们不在 params [] 数组中）？

How is this implemented? Is this a routing enhancement or some logic contained in the TagsController? Finally, how does one 'extract' these tags for filtering (assuming that they are not in the params[] array)?

推荐答案

Vojto的答案是正确的，但请注意，您还可以在服务器端使用Route Globbing来进行干净处理。定义为 /：controller / * tags 的路由将匹配 / questions / ruby​​ / rails / routing ，并在 questions_controller ， params [：tags] 将是包含 ['ruby'，' rails'，'routing'] 。请参见路由文档。

Vojto's answer is correct, but note that you can also use Route Globbing on the server side to handle this cleanly. A route defined as /:controller/*tags will match /questions/ruby/rails/routing, and in the questions_controller, params[:tags] will be an array containing ['ruby','rails','routing']. See the Routing docs.

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