const query = {} //your query here
const update = {} //your update in json here
const option = {new: true} //will return updated document
const user = await User.findOneAndUpdate(query , update, option)
const res = await Person.updateOne({ name: 'Jean-Luc Picard' }, { ship: 'USS Enterprise' });
res.n; // Number of documents matched
res.nModified; // Number of documents modifiedvar conditions = { name: 'bourne' }
, update = { $inc: { visits: 1 }}
Model.update(conditions, update, { multi: true }).then(updatedRows=>{
}).catch(err=>{
console.log(err)
})// SAVE NEW OR UPDATE EXISTING COLLECTION
AnnoucementTagsModel.findOneAndUpdate({_id: announcementId}, newAnnoucementTags, {upsert: true}, function (err, doc) {
if (error) throw new Error(error);
console.log("succesfully saved");
});const MyModel = mongoose.model('Test', new Schema({ name: String }));
const doc = new MyModel();
doc instanceof MyModel; // true
doc instanceof mongoose.Model; // true
doc instanceof mongoose.Document; // true