Question

我一直在尝试在购物车中填充产品。我的购物车型号为-

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]
});

我正试图获得像这样的购物车价值-

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

输出-

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

预期结果-

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

Answer 1

您只需要填充products，然后选择product即可从填充的数组中显示。

Answer 2

我猜仅仅是填充产品就够了。

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

填充对象嵌套嵌套的猫鼬

2 个答案: