node.js - 如何使用 Mongoose 删除子文档？

Question

我有一个具有以下架构的 mongoDB:

const jobSchema = new mongoose.Schema({
    companyTitle: String,
    status: String,
    companyURL: String,
    jobTitle: String,
    jobURL: String,
    jobDescription: String,
    contactName: String,
    contactRole: String,
    contactPhone: String,
    contactEmail: String,
    tasks: [Task.schema]
})

 const taskSchema = new mongoose.Schema({
    taskItem: String,
    isCompleted: Boolean
})

当用户单击按钮时，job._id 和 task._id 将发送到我的服务器，应从数据库中删除特定任务。目前，该路由删除父(作业)而不是子(任务)。任何想法如何定位任务？提前致谢!
应用程序.js

app.delete('/tasks/:jobId/:taskId', (req, res) => {
    const jobId = req.params.jobId
    const taskId = req.params.taskId

    Job.findOneAndDelete(
        {'_id': jobId, 'tasks._id': taskId},
        function (error, doc) {
            if (error) {
                console.log(error)
            } else {
                console.log(doc)
            }
        }
    )
})

Answer 1

您应该使用 findOneAndUpdate而不是 findOneAndDelete .你可以像这样重构你的代码:

app.delete('/tasks/:jobId/:taskId', async (req, res) => {
  const jobId = req.params.jobId
  const taskId = req.params.taskId

  Job.findOneAndUpdate(
      {"_id": jobId },
      {"$pull": {"tasks": {"_id": taskId}}},
      {new:true}, 
      function (error, doc) {
        if (error) {
            console.log(error)
        } else {
            console.log(doc)
        }
      }
  );

})