populate nested array of objects mongoose

Question

I have been trying to populate products in my Cart. My Cart model is -

const ProductSchema = new mongoose.Schema({
  product: { type: mongoose.Schema.Types.ObjectId, ref: 'Product'},
  quantity: Number
});
const CartSchema = new mongoose.Schema({
  userId: mongoose.Schema.Types.ObjectId,
  products: [ProductSchema]
});

I am trying to get the cart value like this -

let getCart = async (userId) => {
  let res = await Cart.find({ userId: userId }).populate('products.product')
  return res;
};

Output -

{
  userId: xyz,
  products:[
    product: null,
    quantity:1
  ]
}

Expected Result -

{ 
  userId: xyz,
  products:[
    product: {
      name: 'product name', 
      description:'',
      ...
    },
    quantity:1
  ]
}

Possible duplicate of [Mongoose populating array of subdocuments](https://stackoverflow.com/questions/40470823/mongoose-populating-array-of-subdocuments) — Vikash_Singh, May 16 '19 at 19:20

score 0 · Answer 1 · answered May 06 '19 at 06:29

0

You need to populate only products and select product to show from the populated array.

answered May 06 '19 at 06:29

Shivam Pandey

3,756
2
19
26

score -1 · Answer 2 · answered May 06 '19 at 06:33

-1

Just populating product is enough I guess.

let getCart = async (userId) => {
  let res = await Cart.find({ userId: userId }).populate('products')
  return res;
};

answered May 06 '19 at 06:33

Shivani Tyagi

182
5

populate nested array of objects mongoose

2 Answers2