bcef08424c
* add solution to a challenge add solution to the challenge: add-a-description-to-your-package-json * add comment to all backend challenges The comment expllains that these challenges don't need a solution.
48 lines
1.7 KiB
Markdown
48 lines
1.7 KiB
Markdown
---
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id: 587d7fb8367417b2b2512c11
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title: Delete Many Documents with model.remove()
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challengeType: 2
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forumTopicId: 301538
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---
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## Description
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<section id='description'>
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<code>Model.remove()</code> is useful to delete all the documents matching given criteria.
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</section>
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## Instructions
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<section id='instructions'>
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Delete all the people whose name is “Mary”, using <code>Model.remove()</code>. Pass it to a query document with the <code>name</code> field set, and of course a callback.
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<strong>Note:</strong> The <code>Model.remove()</code> doesn’t return the deleted document, but a JSON object containing the outcome of the operation, and the number of items affected. Don’t forget to pass it to the <code>done()</code> callback, since we use it in tests.
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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: Deleting many items at once should succeed
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testString: 'getUserInput => $.ajax({url: getUserInput(''url'') + ''/_api/remove-many-people'', type: ''POST'', contentType:''application/json'', data: JSON.stringify([{name: ''Mary'', age: 16, favoriteFoods: [''lollipop'']}, {name: ''Mary'', age: 21, favoriteFoods: [''steak'']}])}).then(data => { assert.isTrue(!!data.ok, ''The mongo stats are not what expected''); assert.equal(data.n, 2, ''The number of items affected is not what expected''); assert.equal(data.count, 0, ''the db items count is not what expected''); }, 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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