Mongodb $lookup give []

[BLACKJACKDEVELOPER]

Here is my code that attempt to use $lookup.I think it's correct but "UserDetail" give me a [] to all data

async get(req,res) {
		try {
			const { query:{ room } } = req
			const data = await msgs.aggregate([
  			{
    			$lookup: {
      				from: "users", localField: "user_id", foreignField: "id", as: "UserDetail"
    		}
  		}
	]);
			console.log(data)
			return res.json({
				data,
				pass:true
			})
		}catch(e) {
			console.log(e)
			return res.json({
				pass:false,
				msg:e.message
			})
		}
	}
	

[dhruvinjs]

hey so am new here so can u assign me this issue here

[dhruvinjs]

async get(req,res) {
try {
const { query:{ room } } = req
const data = await msgs.aggregate([
{
$lookup: {
from: "users", localField: "user_id", foreignField: "_id", as: "UserDetail"
}
}
]);
console.log(data)
return res.json({
data,
pass:true
})
}catch(e) {
console.log(e)
return res.json({
pass:false,
msg:e.message
})
}
}
hey i think there is a typo error in your code assuming if u want to match the id which I think is ObjectId so just have to change "id" to "_id"