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130

Mongoose schema reference and undefined type 'ObjectID'

rated 0 times [ 134] [ 4] / answers: 1 / hits: 15881 / 10 Years ago, thu, february 19, 2015, 12:00:00

I'm trying to do some relations between my schemas and I have some problems with my solution.
Here is my device schema:

var deviceSchema = schema({

    name : String,

    type : String,

    room: {type: mongoose.Types.ObjectId,  ref: 'Room'},

    users: [{type:mongoose.Types.ObjectId, ref: 'User'}]

});

and here room schema:

var roomSchema = schema({

    name : String,

    image : String,

    devices: [{type: mongoose.Types.ObjectId, ref: 'Device'}]

});

Mongoose throws error

TypeError: Undefined type ObjectID at room Did you try nesting
Schemas? You can only nest using refs or arrays.

If I change room: {type: mongoose.Types.ObjectId, ref: 'Room'}, to room: {type: Number, ref: 'Room'}, everything works. Could you explain me why this is happening?

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gabriel

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3 Years ago

answered 10 Years ago ernest · Accepted Answer

mongoose.Types.ObjectId is the ObjectId constructor function, what you want to use in schema definitions is mongoose.Schema.Types.ObjectId (or mongoose.Schema.ObjectId).

So deviceSchema should look like this instead:

var deviceSchema = schema({

    name : String,

    type : String,

    room: {type: mongoose.Schema.Types.ObjectId,  ref: 'Room'},

    users: [{type:mongoose.Schema.Types.ObjectId, ref: 'User'}]

});