In an older project, I setup a router and use multer to handle file uploads. I am able to use multer middleware on certain routes selectively like this:
var router = express.Router();
var multer = require('multer');
var upload = multer({dest:'./tmp/'}).single('file');
router.post('/:id/foo', upload, function(req, res, next) {
// req.file is the path to a file that can be read from tmp
// ...
});
Recently, I used a yeoman generator to make node api app, and I'd like to add file uploading via multer to that, too. But how do I do that in this new app's structure, which uses a new way to setup routes?
It's index.js file looks like this:
// ...
const routes = require('./routes');
//...
app.use('/', routes);
In routes.js it does this:
const Router = require('express').Router;
const router = new Router();
const user = require('./model/SomeModel/router');
//...
module.exports = router;
And in ./model/SomeModel/router.js, I added some routes following the pattern that was already in the file, using ...args like this:
// In some of these, I want to insert multer, but where?
router.route('/doSomething')
.post((...args) => controller.doSomething(...args));
module.exports = router;
I think my problem is that ...args syntax. How do I get multer inserted into the chain of middleware with the args?
You can mount middleware on specific routers:
router.use(upload) // runs for all routes mounted under this call
router.route('/doSomething')
.post((...args) => controller.doSomething(...args));
module.exports = router;
You should also be able to put it before your post callback:
router.route('/doSomething')
.post(upload, (...args) => controller.doSomething(...args));