Mongoose: How to query objects inside populate? [duplicate] - mongodb

Question

This question already has answers here:
Querying after populate in Mongoose
(6 answers)
Closed 6 years ago.
I have this route for searching partial user input for orderId.
ordersAdminRouter.route('/searchorder/:term')
.get(function(req, res){
term = req.params.term;
console.log(term);
Orders.find({orderId: new RegExp(term)})
.populate({ path: 'userPurchased products.product', select: '-username -password' })
.exec(function(err, orders){
if (err) throw err;
console.log(orders);
res.json(orders);
});
});
Here is my schema
var orderSchema = new Schema({
orderId: { type: String },
userPurchased: { type: Schema.Types.ObjectId, ref: 'users' },
products: [
{
product: { type: Schema.Types.ObjectId, ref: 'products' },
size: { type: String, required: true },
quantity: { type: Number, required: true },
subTotal: { type: Number, required: true }
}
],
totalQuantity: { type: Number },
totalPrice: { type: Number },
modeOfPayment: { type: String },
shippingAd: { type: String },
refNumber: { type: String },
isDone: { type: Boolean, default: false },
orderStatus: { type: String, default: 'Pending' },
dateOrdered: { type: Date, default: Date.now() },
fromNow: { type: String }
});
Now I need to search for the firstname and lastname inside userPurchased which I only get when I populate. How can search it?

Answer 1

I could not understand what kind of information you are saving in the 'userPurchased' field. I assume the users are in a different collection and you're only persisting the id of the user in the userPurchased. If you are just placing the id, you can search using the following query:
orderSchema.find({userPurchased : 'id'})
If you're putting an object with fields, there's no mystery either. Just use the . operator. For example:
orderSchema.find({userPurchased.firstName : 'name'})
Hope it helped you