How to check for empty content?

Question

Node.js

the code works like this. we take a picture from the im1 form, upload it to the cloud, save the link to the picchu in db. how to make an entry in the database if the picture did not come? those. the user sent everything except the picture.

app.post('/upload', multipartMiddleware, function(req, res) {
  //console.log(req.files.im1.path);
  var url = req.files.im1
    cloudinary.uploader.upload(url.path, function(result) {
        var image = new Image ({ 
          image: result.url
          question: req.body.question,
          answer: req.body.answer
        })
        image.save()
        .then(result => res.json(result))
        .catch(e => next(e));
})

Answer 1

check request size