如何在多层文件

Question

更新的值我有一个MongoDB的集合内的下列文件：

{ 
    "_id":1, 
    "days":[ 
     { 
     "date":"30-12-2015", 
     "label":"woensdag 30/12", 
     "delivery_options":{ 
      "10:00-11:00":{ 
       "capacity":5, 
       "orders":0, 
       "remaining_capacity":5 
      }, 
      "11:00-12:00":{ 
       "capacity":5, 
       "orders":0, 
       "remaining_capacity":5 
      }, 
      ... 
     } 
     }, 
     { 
     "date":"31-12-2015", 
     "label":"donderdag 31/12", 
     "delivery_options":{ 
      "10:00-11:00":{ 
       "capacity":5, 
       "orders":0, 
       "remaining_capacity":5 
      }, 
      "11:00-12:00":{ 
       "capacity":5, 
       "orders":0, 
       "remaining_capacity":5 
      }, 
      ... 
     } 
     }, 
     ... 
    ] 
} 

我想要做的是document['days'][1]['delivery_options']['11:00-12:00]['orders']的值更新为1。

这里就是我目前想：

MONGO[:delivery_options].find(_id: 1).update_one($set => {"days.1.delivery_options.11:00-12:00.orders" => 1}) 

但返回：

BSON::InvalidKey: NilClass instances are not allowed as keys in a BSON document. 

我还能尝试一下呢？

Answer 1

你也可以试试：

MONGO[:delivery_options].update_one({ :_id => 1 }, { "$set" => { "days.1.delivery_options.11:00-12:00.orders" => 1 }}) 

Answer 2

你可以试试下面的命令 -

db.deals.update(
    {"_id":ObjectId("5683fc08cc7d3c425b573125")}, 

     {$set:{ "days.1.delivery_options.11:00-12:00.orders":1 }} 
     , { upsert: true } 

) 

我假定集合名称是交易，但可以将其更改到您的收藏名字。