58 lines
1.6 KiB
Markdown
58 lines
1.6 KiB
Markdown
---
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id: 587d7fb8367417b2b2512c11
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title: 使用 model.remove() 删除多个 document
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challengeType: 2
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forumTopicId: 301538
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dashedName: delete-many-documents-with-model-remove
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---
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# --description--
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`Model.remove()` 可以用于删除符合给定匹配条件的所有 document。
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# --instructions--
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修改 `removeManyPeople` 函数，使用 `nameToRemove` 删除所有姓名是变量 `Model.remove()` 的人。 给它传入一个带有 `name` 字段的查询 document 和一个回调函数。
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**注意：** `Model.remove()` 不会返回被删除的 document，而是会返回一个包含操作结果以及受影响的数据数量的 JSON 对象。 不要忘记将它传入 `done()` 回调函数，因为我们需要在挑战的测试中调用它。
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# --hints--
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应一次性成功删除多条数据
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```js
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(getUserInput) =>
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$.ajax({
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url: getUserInput('url') + '/_api/remove-many-people',
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type: 'POST',
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contentType: 'application/json',
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data: JSON.stringify([
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{ name: 'Mary', age: 16, favoriteFoods: ['lollipop'] },
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{ name: 'Mary', age: 21, favoriteFoods: ['steak'] }
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])
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}).then(
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(data) => {
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assert.isTrue(!!data.ok, 'The mongo stats are not what expected');
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assert.equal(
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data.n,
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2,
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'The number of items affected is not what expected'
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);
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assert.equal(data.count, 0, 'the db items count is not what expected');
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},
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(xhr) => {
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throw new Error(xhr.responseText);
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}
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);
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```
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# --solutions--
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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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