59 lines
1.8 KiB
Markdown
59 lines
1.8 KiB
Markdown
---
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id: 587d7fb8367417b2b2512c0f
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title: Perform New Updates on a Document Using model.findOneAndUpdate()
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challengeType: 2
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forumTopicId: 301542
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dashedName: perform-new-updates-on-a-document-using-model-findoneandupdate
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---
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# --description--
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Recent versions of Mongoose have methods to simplify documents updating. Some more advanced features (i.e. pre/post hooks, validation) behave differently with this approach, so the classic method is still useful in many situations. `findByIdAndUpdate()` can be used when searching by id.
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# --instructions--
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Modify the `findAndUpdate` function to find a person by `Name` and set the person's age to `20`. Use the function parameter `personName` as the search key.
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**Note:** You should return the updated document. To do that, you need to pass the options document `{ new: true }` as the 3rd argument to `findOneAndUpdate()`. By default, these methods return the unmodified object.
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# --hints--
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findOneAndUpdate an item should succeed
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```js
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(getUserInput) =>
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$.post(getUserInput('url') + '/_api/find-one-update', {
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name: 'Dorian Gray',
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age: 35,
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favoriteFoods: ['unknown']
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}).then(
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(data) => {
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assert.equal(data.name, 'Dorian Gray', 'item.name is not what expected');
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assert.equal(data.age, 20, 'item.age is not what expected');
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assert.deepEqual(
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data.favoriteFoods,
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['unknown'],
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'item.favoriteFoods is not what expected'
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);
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assert.equal(
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data.__v,
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0,
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'findOneAndUpdate does not increment version by design!'
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);
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},
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(xhr) => {
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throw new Error(xhr.responseText);
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}
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);
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```
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# --solutions--
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```js
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/**
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Backend challenges don't need solutions,
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because they would need to be tested against a full working project.
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Please check our contributing guidelines to learn more.
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*/
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```
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