检查 mongoose sava() data 如果不存在则创建文档，否则更新数据

Question

i have mongoose schema save ever 1 sec if data is already exists update that document

   this.sub.on('message',async function (topic, message) {
        const soilesensor = new SensorModel({
            topic: topic,
            value : parseFloat(message.toString())
          })
          await soilesensor.save();
          cb && cb(topic,message); 
    })

my mongoose schema is

const mongoose = require('mongoose')


const sensor = mongoose.Schema({
    topic : {type : String ,index : true},
    value : {type :Number ,index : true},
    date: { type: Date, default: Date.now ,  index: true}
})

const Sensor = mongoose.model('Sensors' , sensor )

module.exports = Sensor ;

i just save document if data is already exists update that document

Answer 1

You can use upsert . You need to pass upsert: true

Try below example:

db.books.update(
   { item: "ZZZ135" },   // Query parameter
   {                     // Replacement document
     item: "ZZZ135",
     stock: 5,
     tags: [ "database" ]
   },
   { upsert: true }      // Options
)