Mongoose populate undefined fields

Question

I see lot of questions about this but I can't find what is wrong. When I'm using populate to get the "Foreign Key" my field is undefined.

User Model :

var userSchema = new Schema({
    email        : { type: String, required: true, unique: true },
    password     : { type: String, required: true },
    firstname    : { type: String, required: true },
    lastname     : { type: String, required: true },
    created_at   : Date,
    updated_at   : Date,
    office       : [ { type: Schema.Types.ObjectId, ref: 'Office' } ]
});

var User = mongoose.model('User', userSchema, 'User');

module.exports = User;

Office Model :

var officeSchema = new Schema({
    name        : { type: String, required: true },
    address     : String,
    city        : String,
    geolocation : [ { type: Schema.Types.ObjectId, ref: 'Geolocation' } ],
    company     : [ { type: Schema.Types.ObjectId, ref: 'Company' } ]
});

var Office = mongoose.model('Office', officeSchema, 'Office');

module.exports = Office;

Populate code :

User.find({})
.populate('office')
//.populate('office', 'name') I tried this too
.exec(function (err, users) {
    if (err) return handleError(err);

    users.forEach(function(user){
        console.log('Office name: ', user.office.name);
    });
});

I want to get the user office name. But this user.office.name returns me undefined and when I do this user.office I can see the object with the name field. But I don't have the access to the name field.

Answer 1

The office field in the userSchema is defined as array. So, in order to access its elements, use user.office[0].name, user.office[1].name, etc.

Otherwise, use a loop:

user.office
    .forEach(function(each) {
        console.log('Office name: ', each.name);
    });