rails多域名配置

多域名配置我认为最好是通过程序实现。先给出部分代码：

#abc.def.xxx.com
    puts request.url#http://abc.def.xxx.com
    puts request.domain#xxx.com
    puts request.subdomain[0]#abc
    puts request.subdomain[1]#def
    puts request.user_agent#Mozilla/5.0 (X11; Linux i686) 
class ApplicationController < ActionController::Base
  protect_from_forgery
  before_filter :query_user_by_domain
  
  private
  def query_user_by_domain
    if request.domain!="diancai.la"
      @user = User.where(["domain = ?", request.domain]).first
    end
  end
end

下面的是转自http://lightyror.thegiive.net/2006/12/rails-subdomain.html
AppleWebKit/535.1 (KHTML, like Gecko) Chrome/14.0.835.202 Safari/535.1
。RailsTip 有一篇 Building A Multi-Site Application，裡面介紹可以使用 DHH 寫的 Subdmain 的 plugin AccountLocation 來做到這件事情。安裝方式是

    script/plugin install http://dev.rubyonrails.org/svn/rails/plugins/account_location/

然後在程式裡面使用

    include AccountLocation
其他相关文章：
http://railstips.org/blog/archives/2006/11/13/building-a-multi-site-supported-application/
http://www.iteye.com/topic/39836