How to receive an array from a model inside another model? (mongoose) (mongoDB)

Question

I have an order model/schema, and my goal is that in this model in "list", I receive the information from the model cart in array format. How could I do this using ref?

cart model

const mongoose = require('mongoose');

const CartSchema = new mongoose.Schema(
    {
        name: {
            type: String,
            required: true,
        },
        note: {
            type: String,
            required: true,
        },
        price: {
            type: Number,
            required: false,
        },
        createdAt: {
            type: Date,
            default: Date.now,
        }
    },
    { timestamps: true }
  );
  
module.exports = mongoose.model("Cart", CartSchema);

order

const mongoose = require('mongoose');

const OrderSchema = new mongoose.Schema(
    {
        list: {
            name: String,
            notes: String,
        },
        totalAmount: {
            type: Number,
            required: true,
        },
        payment: {
            type: String,
            required: true,
        },
        address: {
            type: String,
            required: true,
        },
        addressNote: {
            type: String,
            required: false,
        },
        createdAt: {
            type: Date,
            default: Date.now,
        }
    },
    { timestamps: true }
  );
  
module.exports = mongoose.model("Order", OrderSchema);

Basically receive in array format the information of the model cart in "list" in model order

lpizzinidev · Accepted Answer · 2022-11-15 07:35:59Z

1

You should define your list as an array of ObjectIds referring to the Cart model:

const OrderSchema = new mongoose.Schema(
  {
      list: [{
          type: mongoose.Schema.Types.ObjectId,
          ref: 'Cart'
      }],
      ...
  });

Then, to retrieve the values in list, just populate the Order:

Order.find({}).populate('list').exec();

answered Nov 15, 2022 at 7:35

lpizzinidev

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6 Comments

Routfin Over a year ago

Can I send several "cart" within the list?

Routfin Over a year ago

For example, can I send more than one cart to this array that will be added? Or just one?

lpizzinidev Over a year ago

list is declared as an array so yes, you can add multiple Cart references to it

Routfin Over a year ago

How can I do this in postman? For example

Routfin Over a year ago

In theory in "list" I should put the cart id I want, right? If I want more than one cart, how can I add more than one id? (postman)

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