Files

49 lines
1.4 KiB
Markdown
Raw Permalink Normal View History

---
id: 587d7fb7367417b2b2512c0d
title: 使用 model.findById() 方法,根據 _id 來搜索數據
challengeType: 2
forumTopicId: 301544
dashedName: use-model-findbyid-to-search-your-database-by-id
---
# --description--
在保存 document 的時候MongoDB 會自動爲它添加 `_id` 字段,並給該字段設置一個唯一的僅包含數字和字母的值。 通過 `_id` 搜索是一個十分常見的操作爲此Mongoose 提供了一個專門的方法。
# --instructions--
修改 `findPersonById`,用 `Model.findById() -> Person` 來查詢唯一一個給定 `_id` 的人, 把函數參數 `personId` 作爲查詢鍵。
# --hints--
應成功地根據 Id 找到對應的數據
```js
(getUserInput) =>
$.get(getUserInput('url') + '/_api/find-by-id').then(
(data) => {
assert.equal(data.name, 'test', 'item.name is not what expected');
assert.equal(data.age, 0, 'item.age is not what expected');
assert.deepEqual(
data.favoriteFoods,
['none'],
'item.favoriteFoods is not what expected'
);
assert.equal(data.__v, 0, 'The item should be not previously edited');
},
(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.
*/
```