MongoDB - Getting records made by user - mongodb

Question

I'm working with Mongodb, and was wondering on how to get records made by the user. In the below example I have to records each with different emails (createdBy), but how do I get the records by the current user logged in?
Schema result:
var resultSchema = new Schema({
test: { type: String, required: true, lowercase: true},
status: { type: String, required: true, lowercase: true},
date: { type: Date, required: true},
amount: { type: Number, required: true},
createdBy: { type: String, required: true},
});
Schema user:
var userSchema = new Schema({
email: { type: String, required: true, lowercase: true},
username: { type: String, required: true, lowercase: true},
password: { type: String, required: true}
});
Database:
"recipe": [
{
"_id": "5b7af572a1051b1b18aec627",
"test": "asassdasdasd",
"status": "waiting",
"date": "2018-08-06T22:00:00.000Z",
"amount": 2,
"createdBy": "test#outlook.com",
"__v": 0
}
]
"recipe": [
{
"_id": "5b7af572a1051b1b18aec621",
"test": "test2",
"status": "waiting",
"date": "2018-08-06T22:00:00.000Z",
"amount": 2,
"createdBy": "notTest#outlook.com",
"__v": 0
}
]
I tried this, but this returns empty:
router.get('/userResults', (req, res) => {
Result.find({createdBy: req.body.createdBy}, (err, result) => {
})
})

Answer 1

To say the user is logged in or not and to identify the user who is logged in, I am sure you have some mechanism to get the Email ID of the current user.
So ideally you should have access to the Email ID of the user who is logged in and making the API call.
Provision a middleware to parse the email id from every request instead of making a Database call to check the user's email ID.
Query : db.resultSchema.find({createdBy: parsed_email_id_from_api_request}
One way to do it using JWT is parse the token using a middleware and forwarding the email or any other relevant field to the request where you make the Database call to check the "results" collection.