MongoError: 'cursor' 选项是必需的，除了带有解释参数的聚合 [英] MongoError: The 'cursor' option is required, except for aggregate with the explain argument

问题描述

即使出现以下错误，我仍在使用最新版本的 mongodb 3.6...

I am using latest version of mongodb 3.6 even after getting following error...

MongoError: The 'cursor' option is required, except for aggregate with the explain argument

<小时>

const user = await User.aggregate([
      { $group: {
          _id: '$_id',
          domain: { $push: "$domain" },
          domain: { $push: "$email" },
          domain: { $push: "$userName" }
        }
      }
    ])

推荐答案

感谢@Neil Lunn

更新猫鼬.5.0 之前的 Mongoose 版本与 MongoDB 3.6 不正确匹配.MongoDB 3.6 将聚合 API 从游标可选"更改为仅游标"，而较旧的 mongoose 版本通过尝试调用已弃用的方式来请求数组作为响应来打破这一点.

Update mongoose. Mongoose versions prior to 5.0 are incorrectly matched for MongoDB 3.6. MongoDB 3.6 changed the aggregate API from "cursor optional" to "cursor only", and older mongoose versions break this by trying to invoke a deprecated way to ask for an array in response.

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