Req.Body Not There After Second Multer Middleware Top 15 Favorites

When using Multer middleware for handling file uploads in Node.js, it’s important to understand that Multer processes the uploaded files and adds them to the request object’s files property, not the body property.

In a typical Multer setup, you would use the multer() middleware function to configure Multer with the appropriate options, and then use the upload method returned by multer() as middleware to handle file uploads. For example:

javascript
const multer = require('multer');
const upload = multer({ dest: 'uploads/' });

app.post('/upload', upload.single('file'), (req, res) => {
  console.log(req.file); // logs the uploaded file object
  console.log(req.body); // logs an empty object {}
  // handle the uploaded file here
});

In the example above, the upload.single('file') middleware processes the uploaded file and adds it to the request object’s file property. The req.body property is left empty because there is no text data in the request body.

If you want to handle both file uploads and text data in the same request, you can use the multer() middleware function multiple times with different configurations. For example:

javascript
const multer = require('multer');

const uploadFiles = multer({ dest: 'uploads/' }).single('file');
const uploadText = multer().none();

app.post('/upload', [uploadFiles, uploadText], (req, res) => {
  console.log(req.file); // logs the uploaded file object
  console.log(req.body); // logs an object containing text data
  // handle the uploaded file and text data here
});

In the example above, the uploadFiles middleware processes the uploaded file and adds it to the request object’s file property. The uploadText middleware processes the text data in the request body and adds it to the request object’s body property. The order of the middleware functions is important, as Multer will process the middleware functions in the order they are passed to the route handler.