I am currently working on making a GET request on my backend that maps out all reviews based on the item number attached to the review. I've made a few dummy reviews that share the same item number (but have different _id values) and am trying to figure out how to create this GET request.

I can get all reviews to map out in general but not by item number

​

router.get("/:id", async (req, res) => {
  const populateQuery = [
    {
      path: "user",
      select: ["username"],
    },
    {
      path: "reviews",
      select: ["item"],
      populate: { path: "user", select: ["username"] },
    },
  ]
  const reviews = await Review.find({})
  response.json(reviews.map((review) => review.toJSON()))
})

An example review would be:

• _id:615323ee97dc7d1960350e33
• text:"This could've been worse but I'm glad they actually tried this time"
• item:168

​

​

• _id:615b95dfd6a4fc3814139ad4
• text:"Delete this review and this game"
• item:168

​

​

• _id:615b968e9dafdbead0de3fde
• text:"Witcher is amazing"
• item:4062

​

Basically, I want the function to show the ones with item:168 mapped out and separate from the Witcher review.

​

Currently getting the error of TypeError: Cannot read properties of undefined (reading 'get')

My model schema for reviews is this

UPDATE : Added this line and it gave me everything I needed

​

  const reviews = await Review.find({ item: { $in: [item] } })

​

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

const reviewSchema = new mongoose.Schema(
  {
    text: {
      type: String,
      required: true,
      maxlength: 500,
    },
    author: {
      type: ObjectId,
      ref: "User",
    },
    created: {
      type: Date,
      default: Date.now,
    },
    item: {
      type: Number,
      required: true,
    }
  },
  { timestamps: true }
)

const Review = mongoose.model("Review", reviewSchema)

export default Review