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

---
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>