MONGODB 更新嵌套数组答案

【问题标题】：MONGO DB updating nested arrayMONGODB 更新嵌套数组
【发布时间】：2019-02-20 19:50:42
【问题描述】：

Below Array this Exisiting in DataBase and
[{
    name: 'Courier Received by Investor',
    value: true
  },
  {
    name: 'Courier Sent By Investor',
    value: false
  },
  {
    name: 'Signed CA-Doc received',
    value: false
  },
  {
    name: 'Cheque/Payment Received',
    value: false
  },
  {
    name: 'Cancelled Cheque Received',
    value: false
  },
  {
    name: 'ID Proof Received',
    value: false
  },
  {
    name: 'Address Proof Received',
    value: false
  },
  {
    name: 'Signed CA pictures/scan received',
    value: false
  }
]


 I WANT TO UPDATE THESE BELOW FIELDS IN THE ABOVE ARRAY, CAN ANYONE HELP ME WITH THIS?


[{
    name: 'Courier Received by Investor',
    value: true
  },
  {
    name: 'Courier Sent By Investor',
    value: true
  },
  {
    name: 'Cheque/Payment Received',
    value: true
  }
]

【问题讨论】：

标签： mongodb

【解决方案1】：

您可以使用 arrayFilters 和 filtered positional operator 来执行此操作。

例如，假设您创建的文档具有以下结构（arrayField 是用于保存数组值的字段名称）：

{
    arrayField: [{
            name: 'Courier Received by Investor',
            value: true
        },
        {
            name: 'Courier Sent By Investor',
            value: false
        },
        {
            name: 'Signed CA-Doc received',
            value: false
        },
        {
            name: 'Cheque/Payment Received',
            value: false
        },
        {
            name: 'Cancelled Cheque Received',
            value: false
        },
        {
            name: 'ID Proof Received',
            value: false
        },
        {
            name: 'Address Proof Received',
            value: false
        },
        {
            name: 'Signed CA pictures/scan received',
            value: false
        }
    ]
}

您可以更新 Courier Sent By Investor 的所有条目并将其设置为 true，如下所示：

db.collection.update({}, {
    $set: {
        "arrayField.$[element].value": true
    }
}, {
    multi: true,
    arrayFilters: [{
        "element.name": "Courier Sent By Investor"
    }]
})

【讨论】：