Conditional $or in MongoDB - node.js

Question

I need to do from and to date querying in MongoDB. My solution is good when there is no from and to query parameters, but it crashes when I write this in URL.
What's the problem or maybe you have better solution for this.
Error
{"stringValue":""{ fromDate: 'Sat Dec 31 2022' }"","kind":"string","value":{"fromDate":"Sat Dec 31 2022"},"path":"date","reason":null,"valueType":"Object","statusCode":400}
Route
router.get("/:_id/logs", (req, res) => {
const fromDate = new Date(req.query.from).toDateString();
const toDate = new Date(req.query.to).toDateString();
User.findById(req.params._id)
.then((user) => {
Exercise.find({
$and: [
{ user: req.params._id },
fromDate !== "Invalid Date"
? { date: { $gte: { fromDate } } }
: {},
toDate !== "Invalid Date" ? { date: { $lte: { toDate } } } : {},
],
})
.limit(+req.query.limit)
.sort({ date: 1 })
.exec()
.then((exercises) =>
res.json({
username: user.username,
userId: user._id,
count: exercises.length,
logs: exercises,
})
)
.catch((err) => res.json({ ...err, statusCode: 400 }));
})
.catch((err) => res.json({ ...err, statusCode: 400 }));
});

Answer 1

In this case, it's simpler to build the query operator first:
const fromDate = new Date(req.query.from).toDateString();
const toDate = new Date(req.query.to).toDateString();
const dateOperator = {};
if (fromDate !== "Invalid Date") {
dateOperator.$gte = fromDate;
}
if (toDate !== "Invalid Date") {
dateOperator.$lte = toDate;
}
Exercise.find({
$and: [
{ user: req.params._id },
{ date: dateOperator },
],
})