--- id: 587d7fb8367417b2b2512c11 title: 使用 model.remove() 删除多个 document challengeType: 2 forumTopicId: 301538 dashedName: delete-many-documents-with-model-remove --- # --description-- `Model.remove()` 可以用于删除符合给定匹配条件的所有 document。 # --instructions-- 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。 **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。 # --hints-- 应一次性成功删除多条数据 ```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. */ ```