Mongoose Model, Array Of Strings, Array Of Objects Structure

I am trying to design my database model and i dont have clue how to fit array of strings and array of objects into it. My current model is: const mongoose = require('mongoose'); co

Solution 1:

Favorites must be an array of String like this: favorites: [String]

For the cart array we have two main options:

1. We can define the cart as an array of subdocuments.

const schema = new Schema({
  email: { type: String, unique: true, required: true },
  hash: { type: String, required: true },
  createdDate: { type: Date, default: Date.now },
  settings: {
    favorites: [String],
    cart: [
      {
        quantity: Number,
        marketId: String
      }
    ],
    states: {
      favorites: { type: Boolean, default: true },
      search: { type: Boolean, default: false },
      category: { type: Schema.Types.Mixed, default: false }
    }
  }
});

2. Or we can declare cart as an array of schema types.

const schema = new Schema({
  email: { type: String, unique: true, required: true },
  hash: { type: String, required: true },
  createdDate: { type: Date, default: Date.now },
  settings: {
    favorites: [String],
    cart: [
      new Schema({
        quantity: Number,
        marketId: String
      })
    ],
    states: {
      favorites: { type: Boolean, default: true },
      search: { type: Boolean, default: false },
      category: { type: Schema.Types.Mixed, default: false }
    }
  }
});

For both of them, when you create a document, it will look like this, note that mongoose added _id field in the card items.

{
    "settings": {
        "states": {
            "favorites": true,
            "search": false,
            "category": false
        },
        "favorites": [
            "234",
            "564",
            "213",
            "782"
        ],
        "cart": [
            {
                "_id": "5e6cd0bd53feb32d50699b79",
                "quantity": 5,
                "marketId": "234"
            },
            {
                "_id": "5e6cd0bd53feb32d50699b78",
                "quantity": 2,
                "marketId": "564"
            },
            {
                "_id": "5e6cd0bd53feb32d50699b77",
                "quantity": 7,
                "marketId": "213"
            },
            {
                "_id": "5e6cd0bd53feb32d50699b76",
                "quantity": 3,
                "marketId": "782"
            }
        ]
    },
    "_id": "5e6cd0bd53feb32d50699b75",
    "email": "abc@def.net",
    "hash": "hash...",
    "createdDate": "2020-03-14T12:40:29.969Z",
    "__v": 0,
    "id": "5e6cd0bd53feb32d50699b75"
}

If you don't want _id fields in cart array, you can add _id: false option the cart schema like this:

    cart: [
      new Schema(
        {
          quantity: Number,
          marketId: String
        },
        { _id: false }
      )
    ],

Here are some useful docs:

Arrays

Subdocuments