Mongoose Schema Error: “Cast to string failed for value” when pushing object to empty array

Question

I have a strange problem and cannot figure out what the problem is. The Error-message doesn\'t help.

I\'m sending an "alarm" to the server and want to save

Answer 1

var deviceSchema = new Schema({
 deviceId: {
    type : String,
    index : {
        unique : true,
        dropDups : true
    },
    alarms : {type: [{ type: mongoose.Schema.Types.ObjectId, ref: 'Alarm' }]}
});

var alarmSchema = new Schema({
    timestamp : Number,
    dateTime : String, //yyyymmddhhss
    difference : Number,
    actionTaken : String, //"send sms"
});

I would recommend to make an own schema for the alarms. I think u cant define an array in a schema like you do.