Belajar Express JS | 19. Menambahkan endpoint baru untuk mengupdate data di database (PATCH)

Express.js is a popular web application framework for Node.js. It provides a robust set of features for building web applications and APIs. In this tutorial, we will learn how to add a new endpoint to update data in the database using the PATCH method.

Step 1: Set up the project

First, make sure you have Node.js and npm installed on your system. Then, create a new directory for your project and run the following command to initialize a new Node.js project:

        
            npm init -y
        
    

Next, install Express.js and a database driver of your choice. For this example, we will use MongoDB and the mongoose library:

        
            npm install express mongoose
        
    

Step 2: Create a new endpoint for updating data

In your Express.js application, create a new route to handle the PATCH method for updating data in the database. You can use the following code as a starting point:

        
            const express = require('express');
            const router = express.Router();
            const mongoose = require('mongoose');

            // Connect to the MongoDB database
            mongoose.connect('mongodb://localhost/my_database', { useNewUrlParser: true, useUnifiedTopology: true });

            // Define a schema for your data
            const itemSchema = new mongoose.Schema({
                name: String,
                description: String,
                // ... (other fields)
            });

            const Item = mongoose.model('Item', itemSchema);

            // Update an existing item in the database
            router.patch('/items/:id', async (req, res) => {
                try {
                    const itemId = req.params.id;
                    const updatedItem = req.body;

                    const result = await Item.findByIdAndUpdate(itemId, updatedItem, { new: true });

                    res.json(result);
                } catch (error) {
                    res.status(500).json({ message: error.message });
                }
            });

            module.exports = router;
        
    

Step 3: Test the endpoint

You can now test the new endpoint using a tool like Postman or by sending a PATCH request from your frontend application. Make sure to include the item ID in the URL and the updated data in the request body.

Conclusion

Adding a new endpoint to update data in the database using the PATCH method is a common requirement for many web applications and APIs. With Express.js, it is straightforward to create a route for handling PATCH requests and updating the database accordingly.