rails 4.0 中的多个“根到"路由 [英] Multiple 'root to' routes in rails 4.0

问题描述

我正在尝试根据子域让 rails 转到不同的 controller#action，这就是我目前在 routes.rb 中的内容

I am trying to get rails to go to different controller#action according to the subdomain, and this is what I have so far in routes.rb

Petworkslabs::Application.routes.draw do

  get '/', to: 'custom#show', constraints: {subdomain: '/.+/'}, as: 'custom_root'
  get '/',  to: "welcome#home", as: 'default_root'
end

rake 显示我希望它走的正确路线

rake shows the correct routes I want it to take

rake routes
      Prefix Verb   URI Pattern             Controller#Action
 custom_root GET    /                       custom#show {:subdomain=>"/.+/"}
default_root GET    /                       welcome#home

但由于某种原因，我无法获得像 abc.localhost:3000 这样的请求来命中自定义控制器.它总是将它路由到welcome#home.有任何想法吗?我对 Rails 还很陌生，所以任何关于一般调试的提示也将不胜感激.

But for some reason, I can't get requests like abc.localhost:3000 to hit the custom controller. It always routes it to welcome#home. Any ideas? I am fairly new to rails, so any tips about general debugging would also be appreciated.

我使用调试器逐步完成代码，这就是我发现的

I stepped through the code using the debugger and this is what I found

(rdb:32) request.domainabc.localhost"(rdb:32) request.subdomain"(rdb:32) request.subdomain.present?假

(rdb:32) request.domain "abc.localhost" (rdb:32) request.subdomain "" (rdb:32) request.subdomain.present? false

看起来由于某种原因 rails 认为子域不存在，即使它在那里.我想知道是不是因为我在做这个本地主机.

Looks like for some reason rails thinks that the subdomain is not present, even though its there. I wonder if its because I am doing this localhost.

推荐答案

由于某种原因 request.subdomain 根本没有被填充(我怀疑这是因为我在 localhost 上做了这个，我在这里打开了一个错误 https://github.com/rails/rails/issues/12438).这导致 routes.rb 中的正则表达式匹配失败.我最终创建了自定义匹配项?看起来像这样的子域的方法

For some reason request.subdomain was not getting populated at all (I suspect this is because I have doing this on localhost, I have opened a bug here https://github.com/rails/rails/issues/12438). This was causing the regex match in routes.rb to fail. I ended up creating a custom matches? method for Subdomain which looks something like this

class Subdomain
  def self.matches?(request)

    request.domain.split('.').size>1 && request.subdomain != "www"
  end
end

并将其连接到 routes.rb

and hooking that up in routes.rb

constraints(Subdomain) do
  get '/',  to: "custom#home", as: 'custom_root'
end

这似乎有效.

github 问题页面中的更多信息 https://github.com/rails/rails/issues/12438

More information in the github issues page https://github.com/rails/rails/issues/12438

这篇关于rails 4.0 中的多个“根到"路由的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！