Nodejs express filter data by query - node.js

Question

I need to run the query by find like I pass id and data only with that Id will display but the issue is it's showing all data means it's not filtering.
I am finding data like this
router.get('/getannouncementsbyrestaurant/:id', async (req, res) => {
let getannouncementsbyrestaurant = await Announcements.find({ restaurants: req.params.id }).populate(['announcementRestaurants']);
if (!getannouncementsbyrestaurant) {
return res.status(400).json({ success: false, message: "something went wrong" })
}
res.status(200).json({ success: true, data: getannouncementsbyrestaurant })
})
and here is the model
const mongoose = require('mongoose');
const announcementsschema = new mongoose.Schema({
announcementName: {
type: String,
required: true
},
announcementDescription: {
type: String,
required: true
},
announcementCountry: {
type: String,
required: false
},
announcementCity: {
type: String,
required: false
},
announcementStreet: {
type: String,
default: ''
},
announcementRestaurants: {
type: mongoose.Schema.Types.ObjectId,
required: true,
ref: 'restaurants'
},
announcementCreatedOn: {
type: Date,
default: Date.now
}
})
announcementsschema.virtual('id').get(function () {
return this._id.toHexString();
});
announcementsschema.set('toJSON', {
virtuals: true,
});
exports.Announcements = mongoose.model('Announcements', announcementsschema);
exports.announcementsschema = announcementsschema;
Don't know why its showing all data
here is example json
"data": [
{
"_id": "631a4c9c2c4fca7afc0f23f5",
"announcementName": "Mega Sale 10% off",
"announcementRestaurants": {
"_id": "631a4af62c4fca7afc0f238f",
"restaurantName": "Mega Restaurant",
},
"id": "631a4c9c2c4fca7afc0f23f5"
},
{
"_id": "631a51b72c4fca7afc0f2449",
"announcementName": "Sale upto 90%",
"announcementRestaurants": {
"_id": "631a51752c4fca7afc0f2434",
"restaurantName": "McDonalds",
},
"announcementCreatedOn": "2022-09-08T20:33:59.870Z",
"__v": 0,
"id": "631a51b72c4fca7afc0f2449"
}
]
I am passing announcementRestaurants._id in param and need to filter with that.

Answer 1

Your schema doesn't have the field restaurants. The corresponding field is announcementRestaurants. So the query should be:
let getannouncementsbyrestaurant =
await Announcements.find({ announcementRestaurants: req.params.id }).populate(['announcementRestaurants']);
Or
let getannouncementsbyrestaurant =
await Announcements.find({ announcementRestaurants: mongoose.Types.ObjectId(req.params.id) }).populate(['announcementRestaurants']);