49 lines
2.0 KiB
Markdown
49 lines
2.0 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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localeTitle: 使用 model.findOneAndUpdate() 对更新 document
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---
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## Description
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<section id='description'>
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最近发布的 mongoose 版本简化了 document 的更新方式,但同时,一些高级功能(如 pre/post hook, 验证)的使用方式也变得和以前不同。因此,在很多情景下,上一个挑战中提到的老方法其实更常用。新方法的加入,可以让我们使用 <code>findByIdAndUpdate()</code> 来进行基于 Id 的搜索。
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</section>
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## Instructions
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<section id='instructions'>
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用 <code>personName</code> 作为 <code>Name</code> 的查找条件,并将查到的 person 年龄设为 20 岁。
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<strong>提示:</strong>你需要返回更新后的 document。你可以把 <code>findOneAndUpdate()</code> 的第三个参数设置为 <code>{new: true}</code>。默认情况下,这个方法会返回修改前的数据。
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</section>
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## Tests
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<section id='tests'>
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```yml
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tests:
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- text: 应成功地使用 findOneAndUpdate 更新数据
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testString: 'getUserInput => $.post(getUserInput(''url'') + ''/_api/find-one-update'', {name:''Dorian Gray'', age: 35, favoriteFoods:[''unknown'']}).then(data => { assert.equal(data.name, ''Dorian Gray'', ''item.name is not what expected''); assert.equal(data.age, 20, ''item.age is not what expected''); assert.deepEqual(data.favoriteFoods, [''unknown''], ''item.favoriteFoods is not what expected''); assert.equal(data.__v, 0, ''findOneAndUpdate does not increment version by design !!!''); }, xhr => { throw new Error(xhr.responseText); })'
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```
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</section>
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## Challenge Seed
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<section id='challengeSeed'>
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</section>
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## Solution
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<section id='solution'>
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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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</section>
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