findOneAndUpdate get updatedOne code example
Example 1: mongodb findoneandupdate return updated
//pass the {new: true} as the third option, if using mongodb driver use {returnOriginal: true} V--- THIS WAS ADDED
Cat.findOneAndUpdate({age: 17}, {$set:{name:"Naomi"}}, {new: true}, (err, doc) => {
if (err) {
console.log("Something wrong when updating data!");
}
console.log(doc);
});
Example 2: findoneandupdate new true
const filter = { name: 'Will Riker' };
const update = { age: 29 };
await Character.countDocuments(filter); // 0
let res = await Character.findOneAndUpdate(filter, update, {
new: true,
upsert: true,
rawResult: true // Return the raw result from the MongoDB driver
});
res.value instanceof Character; // true
// The below property will be `false` if MongoDB upserted a new
// document, and `true` if MongoDB updated an existing object.
res.lastErrorObject.updatedExisting; // false