how to upload and read a file with nodejs / express

there are all kinds of posts about this, but I'm still not getting it. I want to upload a *.csv and read and process its contents.

my jade file is this

//views/import.jade
extends layout
block content
h1= title
form(action="/import", method="post", enctype="multipart/form-data")
    input(type="file", name="ufile")
    input(type="submit", name="Upload")

--

I changed the code, but req.files is undefined

//routes/index.js

/* import page. */
router.get('/blah', function(req, res, next) {
  res.render('import', { title: 'Import Data' });
});

router.post('/import', function(req, res) {
    console.log(req.files);
});


module.exports = router;