Files
freeCodeCamp/curriculum/challenges/portuguese/05-back-end-development-and-apis/mongodb-and-mongoose/chain-search-query-helpers-to-narrow-search-results.md
Shaun Hamilton c2a11ad00d feat: add 'back/front end' in curriculum (#42596)
* chore: rename APIs and Microservices to include "Backend" (#42515)

* fix typo

* fix typo

* undo change

* Corrected grammar mistake

Corrected a grammar mistake by removing a comma.

* change APIs and Microservices cert title

* update title

* Change APIs and Microservices certi title

* Update translations.json

* update title

* feat(curriculum): rename apis and microservices cert

* rename folder structure

* rename certificate

* rename learn Markdown

* apis-and-microservices -> back-end-development-and-apis

* update backend meta

* update i18n langs and cypress test

Co-authored-by: Shaun Hamilton <shauhami020@gmail.com>

* fix: add development to front-end libraries (#42512)

* fix: added-the-word-Development-to-front-end-libraries

* fix/added-the-word-Development-to-front-end-libraries

* fix/added-word-development-to-front-end-libraries-in-other-related-files

* fix/added-the-word-Development-to-front-end-and-all-related-files

* fix/removed-typos-from-last-commit-in-index.md

* fix/reverted-changes-that-i-made-to-dependecies

* fix/removed xvfg

* fix/reverted changes that i made to package.json

* remove unwanted changes

* front-end-development-libraries changes

* rename backend certSlug and README

* update i18n folder names and keys

* test: add legacy path redirect tests

This uses serve.json from the client-config repo, since we currently use
that in production

* fix: create public dir before moving serve.json

* fix: add missing script

* refactor: collect redirect tests

* test: convert to cy.location for stricter tests

* rename certificate folder to 00-certificates

* change crowdin config to recognise new certificates location

* allow translations to be used

Co-authored-by: Nicholas Carrigan (he/him) <nhcarrigan@gmail.com>

* add forwards slashes to path redirects

* fix cypress path tests again

* plese cypress

* fix: test different challenge

Okay so I literally have no idea why this one particular challenge
fails in Cypress Firefox ONLY. Tom and I paired and spun a full build
instance and confirmed in Firefox the page loads and redirects as
expected. Changing to another bootstrap challenge passes Cypress firefox
locally. Absolutely boggled by this.

AAAAAAAAAAAAAAA

* fix: separate the test

Okay apparently the test does not work unless we separate it into
a different `it` statement.

>:( >:( >:( >:(

Co-authored-by: Sujal Gupta <55016909+heysujal@users.noreply.github.com>
Co-authored-by: Noor Fakhry <65724923+NoorFakhry@users.noreply.github.com>
Co-authored-by: Oliver Eyton-Williams <ojeytonwilliams@gmail.com>
Co-authored-by: Nicholas Carrigan (he/him) <nhcarrigan@gmail.com>
2021-08-13 21:57:13 -05:00

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Markdown

---
id: 587d7fb9367417b2b2512c12
title: Encadear auxiliares de consulta para restringir resultados de pesquisa
challengeType: 2
forumTopicId: 301533
dashedName: chain-search-query-helpers-to-narrow-search-results
---
# --description--
Se você não passar o callback como o último argumento para `Model.find()` (ou para outros métodos de pesquisa), a consulta não é executada. Você pode armazenar a consulta em uma variável para uso posterior. Esse tipo de objeto permite que você crie uma consulta usando a sintaxe de encadeamento. A pesquisa real do banco de dados é executada quando você finalmente encadear o método `.exec()`. Você sempre precisa passar seu callback para este último método. Existem muitos auxiliares de consulta. Aqui, usaremos os mais comuns.
# --instructions--
Modifique a função `queryChain` para que encontre pessoas que gostam do alimento especificado pela variável `foodToSearch`. Classifique-os por `name`, limite os resultados a dois documentos e oculte idade deles. Encadeie `.find()`, `.sort()`, `.limit()`, `.select()`e, então, `.exec()`. Passe a callback `done(err, data)` para `exec()`.
# --hints--
Você deve ter sucesso em encadear auxiliares de consulta
```js
(getUserInput) =>
$.ajax({
url: getUserInput('url') + '/_api/query-tools',
type: 'POST',
contentType: 'application/json',
data: JSON.stringify([
{ name: 'Pablo', age: 26, favoriteFoods: ['burrito', 'hot-dog'] },
{ name: 'Bob', age: 23, favoriteFoods: ['pizza', 'nachos'] },
{ name: 'Ashley', age: 32, favoriteFoods: ['steak', 'burrito'] },
{ name: 'Mario', age: 51, favoriteFoods: ['burrito', 'prosciutto'] }
])
}).then(
(data) => {
assert.isArray(data, 'the response should be an Array');
assert.equal(
data.length,
2,
'the data array length is not what expected'
);
assert.notProperty(
data[0],
'age',
'The returned first item has too many properties'
);
assert.equal(
data[0].name,
'Ashley',
'The returned first item name is not what expected'
);
assert.notProperty(
data[1],
'age',
'The returned second item has too many properties'
);
assert.equal(
data[1].name,
'Mario',
'The returned second item name is not what expected'
);
},
(xhr) => {
throw new Error(xhr.responseText);
}
);
```
# --solutions--
```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.
*/
```