如何使用express将数据保存到mongodb中？

Question

尝试使用 express 和 MongoDB 创建 signin 和 signup。在邮递员中，数据完美传递，但无法将数据保存到 mongoDB 集群中。 在这个文件中创建了到数据库的连接，并且也混淆了我是否连接到数据库 在这个文件中，我为要提供的用户详细信息创建了架构

//Index.js


const express = require("express");
const mongoose = require("mongoose");
const app = express();
const dotenv = require("dotenv");

dotenv.config();

const db = process.env.DATABASE;

mongoose.connect(db, { useNewUrlParse: true }, () =>
  console.log("connected to db")
);



//midlewares
app.use(express.json());

//importing routes

const authRoute = require("./routes/auth");

//route middle wares
app.use("/api/user", authRoute);

app.listen(3000, () => console.log("gg server is running"));



//User.js


const mongoose = require("mongoose");

const { Schema } = mongoose;

const userSchema = new Schema({
  name: {
    type: String,
    max: 32,
    required: true,
    min: 6,
  },

  email: {
    type: String,
    required: true,
    max: 32,
  },
  password: {
    type: String,
    max: 1022,
    min: 8,
    required: true,
  },

  date: {
    type: Date,
    default: Date.now,
  },
});

module.exports = mongoose.model("User", userSchema);




//Auth.js


const router = require("express").Router();
const User = require("../model/User");

router.post("/register", (req, res) => {
  const user = new User({
    name: req.body.name,
    email: req.body.email,
    password: req.body.password,
  });

  const name = {
    name: req.body.name,
    email: req.body.email,
  };

  res.send(user);

  user.save();
});
module.exports = route[![enter image description here][1]][1]r;

Answer 1

第一步

首先，您应该在连接 MongoDB 后创建一个服务器。所以，把你的服务器逻辑放在mongoose.connectconnect 里面。这将确保当您尝试创建新用户时，MongoDB 已经连接。

mongoose.connect(db, { useNewUrlParse: true }, () =>
  console.log("connected to db");

  //midlewares
  app.use(express.json());

  //importing routes

  const authRoute = require("./routes/auth");

  //route middle wares
  app.use("/api/user", authRoute);

  app.listen(3000, () => console.log("gg server is running"));
);

第 2 步

使用create方法创建新的用户文档：

router.post("/register", async (req, res) => {
  const user = await User.create({
    name: req.body.name,
    email: req.body.email,
    password: req.body.password,
  });

  return res.status(200).json(user);
});