57 lines
1.7 KiB
Markdown
57 lines
1.7 KiB
Markdown
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---
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id: 587d7fb6367417b2b2512c09
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title: 创建并保存一条 Model 记录
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challengeType: 2
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forumTopicId: 301536
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dashedName: create-and-save-a-record-of-a-model
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---
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# --description--
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在这个挑战中,你需要创建并保存一条模型数据。
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# --instructions--
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在 `createAndSavePerson` 函数中,用我们在上一个挑战中写好的 `Person` 构造函数创建 document 实例, 将包含 `name`、`age` 和 `favoriteFoods` 的对象传给构造函数, 这些属性的数据类型必须符合我们在 `personSchema` 中定义的类型。 然后在返回的 document 实例上调用方法 `document.save()`。 同时,按 Node.js 的方式为它传一个回调函数。 这是一种常见模式,以下所有CRUD方法都将这样的回调函数作为最后一个参数。
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```js
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/* Example */
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// ...
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person.save(function(err, data) {
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// ...do your stuff here...
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});
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```
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# --hints--
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应成功地创建数据并保存一条数据到数据库
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```js
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(getUserInput) =>
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$.get(getUserInput('url') + '/_api/create-and-save-person').then(
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(data) => {
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assert.isString(data.name, '"item.name" should be a String');
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assert.isNumber(data.age, '28', '"item.age" should be a Number');
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assert.isArray(
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data.favoriteFoods,
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'"item.favoriteFoods" should be an Array'
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);
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assert.equal(data.__v, 0, 'The db item should be not previously edited');
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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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