Mongoose findOneAndUpdate not saving - mongodb

Question

I have the a mongoose model I'm trying to update right now using the .findOneAndUpdate method with the below code:
MyModel.findOneAndUpdate({ _id: "xxxxx", userId: "xxxxx" }, { $set: { completion:"xxxx", date: "xxxxx" } }, { new: true }, function(err, doc) {
if(err) {
return res.json({success: false, message: err.message});
}
res.json({success: true, message: 'success'});
});
When I log doc, it returns the updated model, but the model is not being saved to the database. Any thoughts on this would be greatly appreciated.
Model Code:
var MyModel = new Schema({
name: {
type: String,
required: true
},
date: {
type: Date,
required: true
},
userId: {
type: String,
required: true
},
completion: {
type: Boolean,
required: true
}
});

Answer 1

There are few issues as per your posted code:
1) MyModel is a Schema object, you will have to create a Model object like this -
var model = mongoose.Model('modelName', MyModel); // where MyModel is a Schema object
Then using the above model object you can run your findOneAndUpdate, like in your code (like model.findOneAndUpdate).
2) Secondly, in the MyModel Schema you have not given the collection name. You can put it in the options object which comes after the schema object argument. So you should put:
var MyModel = new Schema({schema object...}, {collection: 'mongodbCollectionName'});
If you do not give above option,mongoose would create a default collection using the model name.
I believe if (1) is not there, (2) is most likely causing the issue in your case.