node.js - Nodejs 中 mongoose 出现 ".post is not a function"错误

Question

我用 Mongoose 在 Nodejs Express 上做了一个路由器。

当我通过 Postman 发送 const { clientID, orderID } = req.body; 时，

awaitmatching.save(); 运行良好。但之后它会出现如下错误。
我该如何解决这个问题？

TypeError: matching.post is not a functionat router.post (D:\Dev\matching\matching\routes\match ing.js:24:20)at process._tickCallback (internal/process/next_tick.js:68:7)

var express = require("express");
var router = express.Router();
const Matching = require("./../models/matching");

function wait(time) {
  return new Promise(resolve => {
    setTimeout(resolve, time);
  });
}

router.post("/orderpost", async (req, res, next) => {
  try {
    const { clientID, orderID } = req.body;
    const listOn = true;

    const matching = new Matching({
      clientID,
      orderID,
      listOn
    });

    await matching.save();

    await matching.post("save", (doc, next) => {
      wait(3000).then(() => {
        console.log("good");
        next();
      });
    });

    res.send("good");
  } catch (err) {
    console.error(err);
  }
});

我还添加了架构模型。
const mongoose = require("mongoose");

const { Schema } = mongoose;
const MatchingSchema = new Schema({
  clientID: String,
  riderID: [String],
  orderID: String,
  listOn: Boolean
});

module.exports = mongoose.model("Matching", MatchingSchema);

Answer 1

post 方法适用于 Schema 而不是 Model。应该在您的架构上调用它。

MatchingSchema.post("save", (doc) => {
  console.log("good");
});

此外，您不需要调用 wait (不确定为什么要这样做)。仅在执行 save 后调用。

来自docs :

post middleware are executed after the hooked method and all of its pre middleware have completed.