freeCodeCamp/curriculum/challenges/english/05-apis-and-microservices/mongodb-and-mongoose/delete-one-document-using-m...

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---
id: 587d7fb8367417b2b2512c10
title: Delete One Document Using model.findByIdAndRemove
challengeType: 2
forumTopicId: 301539
---
## Description
<section id='description'>
`findByIdAndRemove` and `findOneAndRemove` are like the previous update methods. They pass the removed document to the db. As usual, use the function argument `personId` as the search key.
</section>
## Instructions
<section id='instructions'>
Modify the `removeById` function to delete one person by the person's `_id`. You should use one of the methods `findByIdAndRemove()` or `findOneAndRemove()`.
</section>
## Tests
<section id='tests'>
```yml
tests:
- text: Deleting an item should succeed
testString: |
getUserInput => $.post(getUserInput('url') + '/_api/remove-one-person', {name:'Jason Bourne', age: 36, favoriteFoods:['apples']}).then(data => {
assert.equal(data.name, 'Jason Bourne', 'item.name is not what expected');
assert.equal(data.age, 36, 'item.age is not what expected');
assert.deepEqual(data.favoriteFoods, ['apples'], 'item.favoriteFoods is not what expected');
assert.equal(data.__v, 0);
assert.equal(data.count, 0, 'the db items count is not what expected');
}, xhr => { throw new Error(xhr.responseText); })
```
</section>
## Challenge Seed
<section id='challengeSeed'>
</section>
## Solution
<section id='solution'>
```js
/**
Backend challenges don't need solutions,
because they would need to be tested against a full working project.
Please check our contributing guidelines to learn more.
*/
```
</section>