User.create 不是 mongoDB 中的 function

Question

I'm learning the MERN stack and trying to create an authentication, but now I have a problem, whenever I'm trying to register, I have an error 'TypeError: User.create is not a function' . I think that I have a problem with user model or export. Please help

INDEX.JS

 const express = require("express"); const mongoose = require("mongoose"); const cors = require("cors"); const dotenv = require("dotenv"); const app = express(); const User = require("./models/User"); dotenv.config({ path: "./.env" }); app.use(express.json()); app.use(cors()); mongoose.connect(process.env.MBD_CONNECT, { useNewUrlParser: true }, (err) => { if (err) return console.error(err); console.log("Connected to MongoDB"); }); app.post("/api/registr", async (req, res) => { console.log(req.body); try { const user = await User.create({ firstName: req.body.firstName, lastName: req.body.lastName, email: req.body.email, password: req.body.password, }); res.json({ status: "ok" }); } catch (err) { console.log(err); res.json({ status: "error", error: "Duplicate email" }); } }); app.post("/api/login", async (req, res) => { const user = await User.findOne({ email: req.body.email, password: req.body.password, }); if (user) { return res.json({ status: "ok", user: true }); } else { return res.json({ status: "error", user: false }); } }); app.listen(3001, () => { console.log("SERVER RUNS PERFECTLY;"); });

USER.JS (MODEL)

 const mongoose = require("mongoose"); const User = new mongoose.Schema({ firstName: { type: String, required: true }, lastName: { type: String, required: true }, email: { type: String, required: true, unique: true }, password: { type: String, required: true }, }); const model = mongoose.model("UserData", User); module.exports = User;

Answer 1

You're exporting the schema, not the model. create is a method of mongoose Model class, see document here .

const model = mongoose.model("UserData", User);

module.exports = User; // <------ problem here

It should be:

const model = mongoose.model("UserData", User);

module.exports = model;

Answer 2

Your model file please update with the following code snip

const mongoose = require("mongoose");

const User = new mongoose.Schema({
  firstName: { type: String, required: true },
  lastName: { type: String, required: true },
  email: { type: String, required: true, unique: true },
  password: { type: String, required: true },
}, { collection : 'UserData'});

const model = mongoose.model("UserData", User);

module.exports = User;