xdite

# -*- encoding : utf-8 -*-
class Subdomain
  def self.matches?(request)

    case request.host
    when Setting.host, "www.#{Setting.host}", nil
      false
    else
      true
    end  

nightire

Rails 4 - Active Record Associations

has_one

一对一关系：有 A 和 B，A 拥有且仅拥有一个 B

belongs_to