freeCodeCamp/curriculum/challenges/chinese/05-apis-and-microservices/mongodb-and-mongoose/use-model.findbyid-to-search-your-database-by-id.chinese.md

id, title, challengeType, forumTopicId, localeTitle

id	title	challengeType	forumTopicId	localeTitle
587d7fb7367417b2b2512c0d	Use model.findById() to Search Your Database By _id	2	301544	使用 model.findById() 方法，根据 _id 来搜索数据

Description

在保存 document 的时候，MongoDB 会自动为它添加 _id 字段，并给该字段设置一个唯一的仅包含数字和字母的值。通过 _id 搜索是一个十分常见的操作，为此，Mongoose 提供了一个专门的方法。

Instructions

执行Model.findById() -> Person，使用 personId 作为搜索参数，根据 _id 找到对应的（唯一的）person。

Tests

tests:
  - text: 应成功地根据 Id 找到对应的数据
    testString: "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); })"

Challenge Seed

Solution

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