更新嵌套对象属性猫鼬

Question

我有一个数据库，例如：

我需要根据用户请求，根据leadType更新特定对象的属性_id，例如，id: 5e8333cf4f19264d809b4e8c。

我使用以下查询，但最终返回了空数组：

exports.change_lead_action = (req, res, next) => {
  let lead_obj_id = req.body.leadObjId;

  Lead.findOneAndUpdate(
    { _id: mongoose.Types.ObjectId(lead_obj_id) },
    { leads: { $elemMatch: { _id: req.body.leadId }}}, {leadType: req.body.leadType}, (err, lead) => {
      console.log('updated', lead)
    }
  )

我不确定我要去哪里。

我也尝试使用Lead.find()查询。虽然这返回了我所需的结果，但是我找不到从返回结果中更新属性的方法：

{
    "message": "data found",
    "lead": [
        {
            "_id": "5e8333cf4f19264d809b4e8e",
            "leads": [
                {
                    "education": {
                        "school": "happy kids corner",
                        "graduation": "some school"
                    },
                    "currentPosition": {
                        "title": "Salesforce developer",
                        "description": "Full stack programmer",
                        "joiningDate": "16 december 2019",
                        "endDate": "currently working",
                        "employmentType": "full-time",
                        "industry": "information technology"
                    },
                    "location": {
                        "state": "delhi",
                        "country": "india"
                    },
                    "leadType": "all",
                    "name": "Ben",
                    "mobile": 1524524678,
                    "_id": "5e8333cf4f19264d809b4e8c"
                }
            ]
        }
    ]
}

请帮助解决此问题。

Answer 1

您的查询语法错误。这是Mongoose findOneAndUpdate的文档。

按照他们的说法，第一个参数是查询，第二个参数是更新命令。

所以您需要像这样构造它：

  Lead.findOneAndUpdate(
    {
       _id: mongoose.Types.ObjectId(lead_obj_id),
       leads: { $elemMatch: { _id: req.body.leadId }}
    },
    {leadType: req.body.leadType}, (err, lead) => {
      console.log('updated', lead)
    }