无法在 POST (mongoose/express) 上创建新文档

Posted 2023-03-11

【中文标题】无法在 POST (mongoose/express) 上创建新文档

【英文标题】：Can't create new document on POST (mongoose/express)

【发布时间】：2021-12-29 17:36:09

【问题描述】：

请检查我的 Node.js 代码我想在猫鼬罗盘中保存联系人页面数据，这不会引发任何错误，但也不会保存数据

<form action="/" class="contact_form grid" method="POST">

html 是完全正确的，我认为请告诉我这个 APP.JS 代码有什么问题

   const express = require('express');
    const mongoose = require('mongoose');
    const app = express();
    const bodyparser = require('body-parser')
    const path = require('path');
    mongoose.connect('mongodb://localhost:27017/ContactPage');
    const port = 3000;
    
    var contactSchema= new mongoose.Schema(
        name:type:String, 
        email:type:String, 
        project:type:String, 
        message:type:String
    );
    var Contact = mongoose.model('Contact', contactSchema);
        module.exports = Contact;
    
    app.use('/static', express.static('static')) // For serving static files
    app.use(express.urlencoded(extended: true))
    
    app.set('view engine', 'ejs');
    app.get('/', function(req,res)
        res.sendFile(path.join(__dirname, "index.html"))
    );
    app.post('/',(req,res)=>
            var myData = new Contact(req.body);
            myData.save().then(()=>
                 res.send(req.body)
            ).catch(()=>
                res.status(400).send(req.body);
            );
        );
    
    
    
    app.listen(port, () => 
        console.log(`Example app listening at http://localhost:$port`)
      )

请检查我的 Node.js 代码我想在猫鼬罗盘中保存联系人页面数据，这不会引发任何错误，但也不会保存数据

<form action="/" class="contact_form grid" method="POST">
                    <div class="contact_inputs grid">
                        <div class="contact_content">
                            <label for="" class="contact_label">Name</label>
                            <input type="text" name= "name" class="contact_input">
                        </div>
                        <div class="contact_content">
                            <label for="" class="contact_label">Email</label>
                            <input type="email"name="email" class="contact_input">
                        </div>
                    </div>

                    <div class="contact_content">
                        <label for="" class="contact_label">Project</label>
                        <input type="text" name="project" class="contact_input">
                    </div>
                    <div class="contact_content">
                        <label for="" class="contact_label">Message</label>
                        <textarea name="" id="" cols="0" rows="7" name = "message" class="contact_input"></textarea>
                    </div>
                    <div>
                        <a href="" class="button button--flex">
                            Send Message
                            <i class="fas fa-paper-plane button_icon"></i>
                        </a>
                    </div>
                </form>

【问题讨论】：

没必要SHOUT

答案对你有用吗

【参考方案1】：

#1 你不是从 HTML 提交的，所以不是：

<div>
    <a href="" class="button button--flex">
        Send Message
        <i class="fas fa-paper-plane button_icon"></i>
    </a>
</div>

写：

<button type="submit">
    Send Message
</button>

---

#2表示改进

contactSchema 文件：

const mongoose = require('mongoose')
var contactSchema = new mongoose.Schema(
    name:  type: String ,
    email:  type: String ,
    project:  type: String ,
    message:  type: String 
);

module.exports = mongoose.model('Contact', contactSchema);

应用文件：

const express = require('express');
const mongoose = require('mongoose');
const bodyparser = require('body-parser')
const path = require('path');

const port = 3000;
const app = express();

app.use('/static', express.static('static')) // For serving static files
app.use(express.urlencoded( extended: true ))

app.set('view engine', 'ejs');

app.get('/', function (req, res) 
    res.sendFile(path.join(__dirname, "index.html"))
);

app.post('/', (req, res) => 
    var  name, email, project, message  = req.body;

    var myData = new Contact(
        name,
        email,
        project,
        message,
    );

    myData.save().then((newData) => 
        res.send(newData)
    ).catch((err) => 
        res.status(400).send("Error: ", err, " , Data: ", req.body);
    );
);

app.listen(port, () => 
    mongoose.connect('mongodb://localhost:27017/ContactPage')
        .then(() => console.log("Server & DB listening at http://localhost:$port"))
        .catch(err => console.log(err));
)