MongoDB not saving value, call responds fine on postman, no errors - node.js

Question

I have a NodeJS backend call with MongoDB. This particular api call was working fine for a long time, and when testing out something on the frontend, I realized the call was not going through. I've checked the routes, controller, index files, and tested the call through Postman which works fine, no errors, and even returns an ObjectId (which means it must be interacting with the database, right?). However, when I search the mongo shell nothing comes back, which tells me it is not saving. I cannot find anything wrong and get no errors anywhere along the way. I checked on MongoDB Atlas, the collection only has 4kb of data so it is not that it is 'too full' and have tested all the other api calls (get, patch, delete) which work fine and have no issues like this in my other collections.
Even weirder, during the save call I push the ID to 2 other collection's documents as a ref. The Mongo shell does show that the new Id is populating to the other documents, but yet it is not saving the actual document... which should be happening prior to the push and needs to happen in order to get the ObjectId
Below is the controller for adding a new Visit document, the route for it, and the response from postman. I really have no idea of how else to determine what is taking place.
Controller
exports.addVisit = async (req, res) => {
const hoursValue = getTotalHours(req.body.visitStart, req.body.visitEnd)
try {
const visit = new Visit({
totalHours: hoursValue,
user: req.body.user,
client: req.body.client,
visitStart: req.body.visitStart,
visitEnd: req.body.visitEnd,
location: req.body.location
});
const user = await User.findById(req.body.user);
const client = await Client.findById(req.body.client);
visit.user = user._id
visit.client = client._id
visit.save();
user.visits.push(visit._id);
user.save();
client.visits.push(visit._id);
client.save();
console.log(visit)
console.log(user)
console.log(client)
res.status(201).send(visit);
} catch (error) {
res.status(400)
res.send({ error: "Error adding visit", error})
}
}
Route
router.route("/visits").post(addVisit)
Postman call to: http://localhost:5000/visitapi/visits
{
"client": "6205a8313fe12d6b4ec354c4",
"location": "Home",
"user": "62410a1dcaac9a3d0528de7a",
"visitStart": "2022-10-12T17:00:00.000Z",
"visitEnd": "2022-10-12T19:00:11.000Z"
}
Postman response
{
"client": "6205a8313fe12d6b4ec354c4",
"user": "62410a1dcaac9a3d0528de7a",
"location": "Home",
"visitStart": "2022-10-12T17:00:00.000Z",
"visitEnd": "2022-10-12T19:00:11.000Z",
"totalHours": 2,
"goals": [],
"id": "635302bb48e85ff6ad17ee59"
}
NodeJs console logging the same new document with no errors:
{
client: new ObjectId("6205a8313fe12d6b4ec354c4"),
user: new ObjectId("62410a1dcaac9a3d0528de7a"),
location: 'Home',
visitStart: 2022-10-12T17:00:00.000Z,
visitEnd: 2022-10-12T19:00:11.000Z,
totalHours: 2,
_id: new ObjectId("635302bb48e85ff6ad17ee59"),
goals: []
}
MongoShell showing the Client collection document stored the new Visit document Id:
visits: [
ObjectId("6257158d157e807e51c7e009"),
ObjectId("62fd852a252b83f4bc8f9782"),
ObjectId("63056cee252b83f4bc8f97e9"),
ObjectId("634ee01ec582da494032c73e"),
ObjectId("634ee09cc582da494032c7aa"),
ObjectId("634ee3d6ddbe3f7e6641d69e"),
ObjectId("634efcf1ddbe3f7e6641d6f9"),
ObjectId("634efdd3ddbe3f7e6641d71b"),
ObjectId("635029937da8972360d907c1"),
ObjectId("6350a0e37da8972360d9084f"),
ObjectId("635302bb48e85ff6ad17ee59") //_id matches the same returned by Postman/ NodeJS
],
Again, everything goes through with no errors on postman or the front or back end, and the backend even logs the returns the new document but no new document is being saved to the DB unless I manually pass it in the Mongosh shell, and only for this one collection. Totally lost, I'd appreciate any guidance on how to explore/ resolve this. Thanks

Answer 1

Edited to include the solution based on the discussion in comment
The problem could be in the mongoose schema. If the property names do not match, mongoose will simply ignore the mismatched properties.
Previous answer
Those mongodb calls are expected to be async. You might want to add await to all those.
visit.user = user._id
visit.client = client._id
await visit.save(); // <- this
user.visits.push(visit._id);
await user.save(); // <- this
client.visits.push(visit._id);
await client.save(); // <- and this