after nodejs update i get this error: Cast to ObjectId failed for value "600204c674086624b9de76e2" at path "classId" for model "Message"

Question

this is my code:

async function allMessage(roomId){
     await Message.find({ classId: roomId }).sort({ date: -1 }).limit(4)
    .populate('userId', 'name')// just select name
    .exec(function(allMessage){

        console.log(allMessage);
    })
}

and this is my model structure:

userId:{
    type: mongoose.Schema.Types.ObjectId,
    ref: 'User'
},

classId:{
    type: mongoose.Schema.Types.ObjectId,
    ref: 'Classroom'
},

message:{
    type: String,
    required: true
},

date:{
    type: Date,
    default: Date.now
}

but i get this error: Cast to ObjectId failed for value "600204c674086624b9de76e2" at path "classId" for model "Message"

I try to change roomId to ObjectId with this code:

mongoose.Types.ObjectId(roomId)

but i get this error: Argument passed in must be a single String of 12 bytes or a string of 24 hex characters

befor updating the nodejs it works fine. I confused now. what should I do?

Answer 1

try using trim() on the string id you are getting and then pass it in the query