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  endend

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，面介可以使用 DHH 的 Subdmain 的 plugin AccountLocation 做到件事情。安方式是

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

然後在程式面使用

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