58 lines
1.6 KiB
Markdown
58 lines
1.6 KiB
Markdown
---
|
||
id: 587d7fb8367417b2b2512c11
|
||
title: 使用 model.remove() 刪除多個 document
|
||
challengeType: 2
|
||
forumTopicId: 301538
|
||
dashedName: delete-many-documents-with-model-remove
|
||
---
|
||
|
||
# --description--
|
||
|
||
`Model.remove()` 可以用於刪除符合給定匹配條件的所有 document。
|
||
|
||
# --instructions--
|
||
|
||
修改 `removeManyPeople` 函數，使用 `nameToRemove` 刪除所有姓名是變量 `Model.remove()` 的人。 給它傳入一個帶有 `name` 字段的查詢 document 和一個回調函數。
|
||
|
||
**注意：** `Model.remove()` 不會返回被刪除的 document，而是會返回一個包含操作結果以及受影響的數據數量的 JSON 對象。 不要忘記將它傳入 `done()` 回調函數，因爲我們需要在挑戰的測試中調用它。
|
||
|
||
# --hints--
|
||
|
||
應一次性成功刪除多條數據
|
||
|
||
```js
|
||
(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);
|
||
}
|
||
);
|
||
```
|
||
|
||
# --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.
|
||
*/
|
||
```
|