freeCodeCamp/curriculum/challenges/chinese/05-apis-and-microservices/mongodb-and-mongoose/delete-many-documents-with-model.remove.chinese.md

id, title, challengeType, isHidden, localeTitle

id	title	challengeType	isHidden	localeTitle
587d7fb8367417b2b2512c11	Delete Many Documents with model.remove()	2	false	使用 model.remove() 删除许多文档

Description

Model.remove() 可用于删除与给定条件匹配的所有 document。

Instructions

如果想要删除所有叫 “Mary” 的人, 可以使用 Model.remove()。 传入一个设置了 “name” 字段的 document 作为查询条件，当然还需要一个回调函数。 注意: Model.remove() 不会返回被删除的 document, 但是会返回一个包含操作结果和受影响的 item 数量的 JSON 对象。 不要忘记将它传递给 done() 回调，因为我们在测试中使用它。

Tests

tests:
  - text: 一次性成功的删除多个 item(项目)。
    testString: '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); })'

Challenge Seed

Solution

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