Mongoose populate returning empty array

Question

I am trying to use mongoose populate function but in response I am getting empty array, I have seen multiple posts regarding this

var MerchantSchema = new mongo         


        

Answer 1

Can you try by removing second parameter from the findBbyId:

Merchant
.findById( req.params.id)
.populate('packages')
.exec(function (err, merchant) {
    if (err)
        next(err);
    else
        res.status(200).json(merchant);
});