二级域名

 

转自：http://www.iteye.com/topic/419100

 

 

二级域名支持是一个很简单的问题，把JavaEye的代码贴出来供你参考：
  # show website homepage
  def homepage
    if www?
      render :template => 'main/homepage', :layout => false
    elsif app?
      if logged_in?
        render :template => 'app/base/index', :layout => 'app'
      else
        redirect_to homepage_url
      end
    elsif job?
      render :template => 'job/homepage', :layout => 'job'
    elsif channel?
      @channel = request.subdomains[0]
      if File.exists?("#{RAILS_ROOT}/app/views/channel/#{@channel}/index.rhtml")
        render :template => "channel/#{@channel}/index", :layout => 'channel'
      else
        render :file => "#{RAILS_ROOT}/public/404.html", :status => 404
      end
    elsif blog?
      @blogs = @blog_owner.blogs_by_page params[:page]
      render :template => 'blog/index/index', :layout => 'blog'
    elsif group?
      Group.increment_counter(:visit_count, @group.id)
      render :template => 'group/index/index', :layout => 'group'
    else
      redirect_to homepage_url
    end
  end

 

------------------------------------------------------------------------------------

 

  protected
  def www?
    return request.subdomains && request.subdomains[0] && request.subdomains.length == 1 && request.subdomains[0] == 'www'
  end
 
  def job?
    return request.subdomains && request.subdomains[0] && request.subdomains.length == 1 && request.subdomains[0] == 'job'
  end

  def app?
    return request.subdomains && request.subdomains[0] && request.subdomains.length == 1 && request.subdomains[0] == 'app'
  end
 
  def channel?
    return request.subdomains && request.subdomains[0] && request.subdomains.length == 1 && RESERVED_DOMAIN.include?(request.subdomains[0])
  end

 

 

 

 

 

判断一下subdomains，根据不同的域名做不同的处理，就这么简单。

 

 

我的作法也是参考了你n年前的只言片语写的，这回算是有幸见着原装的了。
有一个问题，就是比较关键的 blog? 方法能放上来吗？
还有一个问题，就是如：http://netfork.iteye.com/blog/XXX这样的效果似乎上面的代码并没有给出实现方法吧。

 

 

 

  def blog?
    if request.subdomains && request.subdomains[0] && request.subdomains.length == 1 && !RESERVED_DOMAIN.include?(request.subdomains[0])
      @blog_owner ||= User.find_by_domain(request.subdomains[0])
      return !@blog_owner.nil?
    end
    return false
  end
  def group?
    if request.subdomains && request.subdomains[1] && request.subdomains[1].eql?("group") && request.subdomains.length == 2
      @group ||= Group.find_by_domain request.subdomains[0]
      return !@group.nil? && @group.active?
    end
    return false
  end

 

/blog/xxx 就是标准的Rails路由映射，只不过这种controller需要加一个filter去判断进来的域名，如果不是博客域名访问过来的话就要redirect。

 

 

  before_filter :blog_domain_required, :except => [:rss_blog, :show]
  def blog_domain_required
    redirect_to homepage_url and return false unless blog?
  end