Categories

        "_id" : 145,
        "diaries_num" : 2,
        "name" : "文章分类一",
        "publish_time" : "2013-02-25 13:14:54",
        "diaries" : [
                      {
                          "_id" : 146,
                          "did" : 144,
                          "publish_time" : "2013-02-25 13:23:14",
                          "title" : "测试下已有分类"
                      },
                      {
                          "_id" : 148,
                          "did" : 147,
                          "publish_time" : "2013-02-25 13:25:42",
                          "title" : "新文章"
                      }
                     ]