Not able to save my array in to mongodb database - node.js

Question

I am new in backend development, creating a post API by using node js and MongoDB,
This is my schema model
// restaurantSchema.js
const mongoose = require('mongoose');
const foodSchema = new mongoose.Schema({
categoryName:{
type: String,
required: true
},
dish: [
{
dishName: {
type: String,
required: true
},
dishDescription: {
type: String
},
dishPrice: {
type: Number,
required: true
},
// dishImg: {
// type: String,
// },
dishRating: {
type: String
},
}
]
});
const restaurantSchema = new mongoose.Schema({
restaurantName: {
type: String,
},
restaurantRating:{
type: String
},
restaurantAddress: {
type: String
},
category: [
{
type: mongoose.Schema.Types.ObjectId,
ref: 'foodSchema'
}
]
})
const Restaurant = new mongoose.model('RESTAURANT', restaurantSchema);
module.exports = Restaurant;
here is the router code
// auth.js
const express = require('express');
const router = express.Router();
require('../db/conn');
const Restaurant = require('../model/restaurantSchema');
const app = express();
router.post('/post-food', async (req, res) => {
try {
console.log(req.body, "body")
const restaurant = new Restaurant({
restaurantName: req.body.restaurantName,
restaurantRating: req.body.restaurantRating,
restaurantAddress: req.body.restaurantAddress,
category: [
{
categoryName: req.body.categoryName
},
{
dishName: req.body.dishName,
dishDescription: req.body.dishDescription,
dishPrice: req.body.dishPrice,
dishRating: req.body.dishRating
}
]
});
await restaurant.save();
console.log(restaurant, "save")
res.status(201).json({ message: "food added successfully" })
} catch (err) {
console.log(err)
}
})
module.exports = router;
this code is going to the app.js (main file)
I am getting only this data while I comment out the category(array) in the auth.js file otherwise not able to save any data in the database file
[1]: https://i.stack.imgur.com/wKn9p.png

Answer 1

First of all this is a great question with very valid code, nicely done!
So, everything is correct in your code except you should declare your foodSchema as a mongoose model as well, just like you're doing so with this one
const Restaurant = new mongoose.model('RESTAURANT', restaurantSchema);
You don't need to use new, you can just omit it.
So basically next to this add the declaration for your foodSchema it should look something like this:
const Restaurant = mongoose.model('RESTAURANT', restaurantSchema);
const Food = mongoose.model('FOOD', foodSchema)
and for exporting them you could do something like this:
module.exports = {
Restaurant: Restaurant,
Food: Food
}
For importing any of these two in your router file you could use destructuring:
const { Restaurant } = require('../model/restaurantSchema')
I hope this helps, have a good day!

Answer 2

You have declared category as a list of mongoose typeId and inserting a list of object of type foodSchema. In your schema file after declaring foodSchema, create a model using that food schema.
const Food = mongoose.model('FOOD', foodSchema)
and now in restaurant schema the category will refer ref: 'Food'
mongoose expecting category as ["61407ce0b6c1fc83d896002e"] but you are providing
[{
categoryName:{
type: String,
required: true
},
dish:[...]
}]
export both Food and Restaurant from the schema file.
module.exports = Food;
for creating restaurant first create an Food
const food = new Food({
categoryName: req.body.categoryName,
dish: [ {
dishName: req.body.dishName,
dishDescription: req.body.dishDescription,
dishPrice: req.body.dishPrice,
dishRating: req.body.dishRating
} ]
})
let foodInserted = await food.save();
then the foodInserted._id to the category of restaurant.
const restaurant = new Restaurant({
restaurantName: req.body.restaurantName,
restaurantRating: req.body.restaurantRating,
restaurantAddress: req.body.restaurantAddress,
category: [foodInserted._id]
});
Follow this documentation