Rails 4应用程序中的子域 [英] Subdomains in a Rails 4 app

问题描述

今天我遇到了一个相当奇怪的现象。当开发一个Rails应用程序，每个用户都有自己的子域名，并尝试使用Devise来执行此操作时，我遇到了没有注册的子域名，无论哪个路由到根页面。所以，例如，即使没有（显式）子域名，它会将我转到主应用程序页面。也许这与我的特定设置有关？我也尝试了一个新的Rails项目，但我得到了相同的结果。任何人可以为我澄清这一点？铁路司机没有这样做。

此外，现在我正在使用WEBrick，即使这不是我在生产中使用的，而我使用域lvh.me访问子域。

感谢您的帮助。

编辑：这是我的routes.rb文件：

  Rails。 application.routes.draw do 
 devise_for：users 
 root'static_page＃index'
 end 
  

我遵循Devise wiki中的这个指南：
https://github.com/plataformatec/devise/wiki/How-to:-Scope-login-to-subdomain

所以我通过迁移删除了电子邮件的唯一性，接下来我补充说：subdomain request_keys如下：

  devise：database_authenticatable，：recoverable，：rememberable，，trackable，：timeoutable，request_keys：[：subdomain] 
  

然后，我继续覆盖find_for_authentication功能，如下所示：

  def self.find_for_authentication （conditions = {}）
条件[：account_id] = Account.find_by_su bdomain（conditions.delete（：subdomain））。id 
 super（conditions）
 end 
  

这只是总结一下。

编辑：
我一直在搞乱，我发现了这个问题。 根指令将所有子域指向我的域。所以如果我从我的routes.rb中删除root，每个子域都会导致一个RouteError。我记得在我的Devise应用程序中需要一个根目录。所以我不知道这是Devise的行为还是根本的。

解决方案

我手动解决了。我在routes.rb中找到了root指令，接受来自每个子域的请求。最后，我实现了一个自定义约束，并将其添加到routes.rb文件中devise_for的约束。这充分解决了我的问题。感谢大家的帮助！

更新：

为了回应我的代码的意见：我们有一个系统设置，每个帐户（业务帐户）将有自己的子域，每个业务帐户将有很多用户。我的子域约束看起来像

lib / subdomain.rb

  class Subdomain 
 def self.matches？（request）
 request.subdomain.present？ &安培;&安培; Account.exists？（subdomain：request.subdomain）
 end 
 end 
  

然后在我的config / routes.rb中，我使用这个约束来路由请求：

config / routes.rb

  require'Subdomain'
 
 Rails.application.routes.draw do 
＃有些路由... 
 constraints（Subdomain）do 
 devise_for：users，controllers：{：sessions => 'session'} 
 root'dashboard＃index'
＃更多子域限制路由... 
 end 
 end 
  

在我发布的原始问题中，我已经显示了我的其他设置。我希望这有助于某人。

Today I came across a rather weird phenomenon. When developing a Rails app in which every user has his own subdomain, and trying to use Devise to do it, I encountered that also subdomains not registered whatsoever would route to the root page. So, for example, even if there was no (explicit) subdomain, it would route me to the main application page. Maybe this has to do with my particular setup? I also tried with a new Rails project, but I got the same result. Anyone able to clarify this for me? Railscasts didn't do the trick.

Also, right now I'm using WEBrick, even though that's not what I'll be using in production, and I'm using the domain lvh.me to access the subdomains.

Thanks for the help.

EDIT: Here's my routes.rb file:

Rails.application.routes.draw do
    devise_for :users
    root 'static_page#index'
end

I followed this guide from the Devise wiki: https://github.com/plataformatec/devise/wiki/How-to:-Scope-login-to-subdomain

So what I did was I removed the uniqueness of the email through a migration, and next I added :subdomain to request_keys as follows:

devise :database_authenticatable, :recoverable, :rememberable, :trackable, :timeoutable, request_keys: [:subdomain]

Then I went on to override the "find_for_authentication" function, as per the following:

def self.find_for_authentication(conditions={})
    conditions[:account_id] = Account.find_by_subdomain(conditions.delete(:subdomain)).id
    super(conditions)
end

And that just about sums it up.

EDIT: I've been messing around, and I've found the problem. The 'root' directive refers all subdomains to my domain. So if I remove the root from my routes.rb, every subdomain leads to a RouteError. I remember about needing a root somewhere in my app for Devise. So I'm not sure if this is Devise's behaviour or root's.

解决方案

I solved it manually. I found out the 'root' directive in the routes.rb accepts requests from every subdomain. In the end, I implemented a custom constraint and added this to the constraint for the devise_for in the routes.rb file. This adequately solved my problem. Thank you all for your help!

Update:

In response to the comment asking for my code: we had a system set up whereby each account (business account) would have their own subdomain, and each business account would have many users. My subdomain constraint looks like

lib/subdomain.rb

class Subdomain
  def self.matches?(request)
    request.subdomain.present? && Account.exists?(subdomain: request.subdomain)
  end
end

Then in my config/routes.rb I used that constrain to route the requests:

config/routes.rb

require 'Subdomain'

Rails.application.routes.draw do
  # Some routes...
  constraints(Subdomain) do
    devise_for :users, controllers: {:sessions => 'session'}
    root 'dashboard#index'
    # More subdomain constrained routes...
  end
end

In my original question I'd posted I'd already shown the rest of my setup. I hope this helps someone.

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