How to specify and update an object within array in MongoDB

Question

I'm trying to update the values of an object placed inside the array.

The MongoDB schema is as follows:

const ServiceStatus = new Schema({
    CustomerName : { type : String},
    CustomerNumber : {type : String},
    ServiceName : {type : String},
    Details : {type: String},
    Date : {type: String},
    Status : {type : String},
    Comments : {type : String},
    ServiceId : {type: Schema.Types.ObjectId},
    CustomerId : {type: Schema.Types.ObjectId},
    ServiceProvider : {type: Schema.Types.ObjectId},
    message : [{
        sender : {type: String},
        content : {type : String},
        time : {type : String}
    }]
})

and the snippet of the route is

router.put('/message/customer/:id',(req, res) => {
    const id=req.params.id;
    Status.findByIdAndUpdate({_id : id}, 
        {
            $push : {
                "message.$.sender": "Customer" ,
                "message.$.content": req.body,
                "message.$.date" : new Date()

            }
        }
    ,{ useFindAndModify: false } )
        .exec((err, status) => res.json(status))
})

When I tried running it on postman it doesn't get updated but I don't get any error. I want to know how I should change the router to make it work.

Answer 1

I think it should be like this one:

db.ServiceStatus.insertOne(
   {
      CustomerName: "the name",
      message: [{ sender: "Customer", content: "some content", time: new Date() }]
   }
);

db.ServiceStatus.updateOne(
   { CustomerName: "the name" },
   {
      $push: {
         message: { sender: "Another customer", content: "more content", time: new Date() }
      }
   }
)

db.ServiceStatus.find()   

{ 
    "_id" : ObjectId("5fdc4f14d1d3de1f92780a0b"), 
    "CustomerName" : "the name", 
    "message" : [
        {
            "sender" : "Customer", 
            "content" : "some content", 
            "time" : ISODate("2020-12-18T07:41:24.166+0100")
        }, 
        {
            "sender" : "Another customer", 
            "content" : "more content", 
            "time" : ISODate("2020-12-18T07:41:26.328+0100")
        }
    ]
}