How to return filename?

I would like to return the randomly generated file name back so that the front end can store the filename in the db, but I can’t figure out how to use the callback to return the filename to somewhere I can use res.send to send it out. Here’s my code:

var storage = multer.diskStorage({
  destination: function (req, file, cb) {
    cb(null, '../images/');
  },
  filename: function (req, file, cb) {
    var id = util.random_string(16) + Date.now() + path.extname(file.originalname);
    cb(null, id);
  }
});
var upload = multer({ storage: storage }).single('image');

router.post('/image/', function (req, res) {
  upload(req, res, function (err) {
    if (err){
      console.log(JSON.stringify(err));
      res.status(400).send("fail saving image");
    } else {
      res.send('how can I return the file name?');
    }
  });
});

[vanhooferwin]

Hi Louis,

For people who are struggling with this issue.

The filename is in the res.req.file.filename variable. In your code it would look like this:

var storage = multer.diskStorage({
  destination: function (req, file, cb) {
    cb(null, '../images/');
  },
  filename: function (req, file, cb) {
    var id = util.random_string(16) + Date.now() + path.extname(file.originalname);
    cb(null, id);
  }
});
var upload = multer({ storage: storage }).single('image');

router.post('/image/', function (req, res) {
  upload(req, res, function (err) {
    if (err){
      console.log(JSON.stringify(err));
      res.status(400).send('fail saving image');
    } else {
      console.log('The filename is ' + res.req.file.filename);
      res.send(res.req.file.filename);  
    }
  });
});

[LinusU]

Look under “File information” in the documentation.

req.file.filename