mongoose update embedded document save() code example

Example 1: mongoose save or update

// This will create another document if it doesn't exist
findByIdAndUpdate(_id, { something: 'updated' }, { upsert: true });

Example 2: save or update mongoose

// 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");
});