import express from 'express'
import { Order } from '../models'


const router = express.Router()

router.get("/test", async (request, response) => {
  response.json("Orders backend reached");
});


router
  .route('/')
  .all((req, res, next) => {
    next()
  })
  .get(async (req, res, next) => {
    const orders = await Order.find()
    res.send(orders)
  })
  .post(async (req, res, next) => {
    const {
      customerDetails: { firstName, lastName, email, address1, address2 },
      items,
      orderTotal,
    } = req.body
    const itemIdList = items.map((i) => i._id)
    const orderData = {
      customerName: `${firstName} ${lastName}`,
      customerEmail: email,
      customerAddress1: address1,
      customerAddress2: address2,
      items: itemIdList,
      orderTotal: orderTotal,
    }
    try {
      const order = new Order(orderData)
      order.save()
      res.json(order._id)
    } catch (error) {
      next(new Error('Error Placing Order'))
    }
  })
  .delete((req, res, next) => {
    next(new Error('not implemented'))
  })

module.exports = router

I am currently testing this backend with Postman and am trying to Post with this

{
    "customerDetails": {
        "firstName": "Sam",
        "lastName": "Iam",
        "email": "abc@abc",
        "address1": "123 Street",
        "address2": "6B"
    },
    "items": [],
    "orderTotal": 29.99
}

The schema attached to the route is

import mongoose from 'mongoose'
const { ObjectId } = mongoose.Schema.Types

const orderSchema = new mongoose.Schema(
  {
    customerName: {
      type: String,
      required: true,
    },
    customerEmail: {
      type: String,
    },
    customerAddress1: {
      type: String,
      required: true,
    },
    customerAddress2: {
      type: String,
    },
    items: [
      {
        type: ObjectId,
        ref: 'Product',
      },
    ],
    orderTotal: {
      type: Number,
      // required: true,
    },
  },
  { timestamps: true }
)

const Order = mongoose.model('Order', orderSchema)

export default Order

Whenever I try to send the JSON data to that backend, it crashes the entire app and responds with items.map is not a function but when I tried the exact same code on another project, it didn't cause any issues with the orders route in the backend.

​

Nvm just fixed it. It was my postman input. Needed to add a title.