Mongoose query find() returns nothing - angularjs

Question

I'm querying db with 2 conditions, keyword and user id, both returns correctly in console log but returns nothing, not null, or [], just blank. Something is wrong with the syntax?
app.get("/api/client?", function (req, res) {
console.log("Search > " + JSON.stringify(req.query));
//Search > {"keyword":"emily","filterby":"5a25f3d1d4b3e30792dd53ca"}
var keyword = req.query.keyword;
var user_id = req.query.id;
Client.find({
$and: [{
"firstname": new RegExp('^' + keyword + '$', "i")
},
{
userid: user_id
}
]
}, (err, result) => {
if (err) {
console.log(err);
}
res.status(200).json(result);
console.log("Result is... " + result)
//Result is
});
});
Alternatively, I tried without query, just search all based on user id and it works, it returns all records in db
app.get("/client", function (req, res) {
var user_id = req.query.id;
Client.find({
userid: user_id
}, (err, result) => {
if (err) {
console.log(err);
}
res.status(200).json(result);
});
});

Answer 1

Found the solution! Noob mistake, I was caught up with what was working in search all, var user_id = req.query.id but in fact when I passed in "filterby", based on
console.log {"keyword":"emily","filterby":"5a25f3d1d4b3e30792dd53ca"}
so it should be
var keyword = req.query.keyword;
var **filterby** = req.query.id;
Client.find({
$and: [{
"firstname": new RegExp('^' + keyword + '$', "i")
},
{
userid: **filterby**
}
]
}