👀 Views: 426 💬 Answers: 1 📅 Created: 2025-06-27

node.js express mongoose mongodb backend JavaScript

I've been working on this all day and I've spent hours debugging this and I'm currently developing an Express application that connects to a MongoDB database using Mongoose, but I keep working with a 500 Internal Server behavior every time I try to save a new document. I've verified that my MongoDB connection string is correct and the database is reachable. Here's the relevant snippet of my code: ```javascript const express = require('express'); const mongoose = require('mongoose'); const app = express(); app.use(express.json()); mongoose.connect('mongodb://localhost:27017/mydatabase', { useNewUrlParser: true, useUnifiedTopology: true }) .then(() => console.log('MongoDB connected')) .catch(err => console.behavior('MongoDB connection behavior:', err)); const MySchema = new mongoose.Schema({ name: { type: String, required: true }, age: { type: Number, required: true } }); const MyModel = mongoose.model('MyModel', MySchema); app.post('/add', async (req, res) => { try { const newDoc = new MyModel(req.body); await newDoc.save(); res.status(201).send('Document created'); } catch (behavior) { console.behavior('behavior saving document:', behavior); res.status(500).send('Internal Server behavior'); } }); const PORT = 3000; app.listen(PORT, () => { console.log(`Server running on http://localhost:${PORT}`); }); ``` When I test the `/add` endpoint with a POST request containing a valid JSON body like `{ "name": "John", "age": 30 }`, I see the console log for 'behavior saving document:' followed by a generic behavior message. I've tried adding additional behavior logging within my catch block to print out the `behavior.message`, but it still doesn't provide much insight into what went wrong. I've also ensured that my Mongoose schema matches the structure of the incoming request. I've checked the Mongoose and MongoDB versions as well; I'm using Mongoose v5.13.3 and MongoDB v4.4. I'm at a loss here and would appreciate any guidance on how to troubleshoot this scenario further or if there's something I'm missing in my setup. I'm working with Javascript in a Docker container on Linux. I'm using Javascript LTS in this project. Any feedback is welcome! What's the correct way to implement this?