Why do I get undefined when trying to parse POST request with busboy? Using MEAN.IO stack

Question

I am trying to use busboy-connect to parse my request file that I send to the server. When I print out my request object, I get this huge Angular.identity object and when I try and parse the object using this code:

app.post("/compositions/fileUpload", function(req, res){
var fstream;

     req.pipe(req.busboy);

     req.busboy.on('file', function (fieldname, file, filename) {

        console.log("Uploading: " + filename); 

        fstream = fs.createWriteStream('/files/' + filename);

        file.pipe(fstream);

        fstream.on('close', function () {

            res.redirect('back');

        });
    });

I error out on the "req.pipe(req.busboy)". I do require connect-busboy, and fs. I also make sure to tell my app to use busboy, so they should be there. However, I continue to get this error:

TypeError: Cannot call method 'on' of undefined
    at IncomingMessage.Readable.pipe (_stream_readable.js:476:8)
    at Object.handle (/home/cyen/development/composelet/source/composelet/packages/compositions/server/routes/compositions.js:38:10)
    at next_layer (/home/cyen/development/composelet/source/composelet/node_modules/express/lib/router/route.js:103:13)
    at Route.dispatch (/home/cyen/development/composelet/source/composelet/node_modules/express/lib/router/route.js:107:5)
    at /home/cyen/development/composelet/source/composelet/node_modules/express/lib/router/index.js:213:24
    at Function.proto.process_params (/home/cyen/development/composelet/source/composelet/node_modules/express/lib/router/index.js:286:12)
    at next (/home/cyen/development/composelet/source/composelet/node_modules/express/lib/router/index.js:207:19)
    at next (/home/cyen/development/composelet/source/composelet/node_modules/express/lib/router/index.js:182:38)
    at next (/home/cyen/development/composelet/source/composelet/node_modules/express/lib/router/index.js:182:38)
    at next (/home/cyen/development/composelet/source/composelet/node_modules/express/lib/router/index.js:182:38)
POST /compositions/fileUpload 500 136.347 ms - -

_stream_readable.js:483
    dest.end();
         ^
TypeError: Cannot call method 'end' of undefined
    at IncomingMessage.onend (_stream_readable.js:483:10)
    at IncomingMessage.g (events.js:180:16)
    at IncomingMessage.EventEmitter.emit (events.js:92:17)
    at _stream_readable.js:920:16
    at process._tickCallback (node.js:415:13)

and I have no idea why. It seems there is another similar question to mine here but it has not been solved yet. Would anyone know what this error could be caused by? Thanks!

score 2 · Accepted Answer · answered Jul 11 '14 at 20:28

2

The problem was I did not require(connect-busboy) above my module in the global scope.

answered Jul 11 '14 at 20:28

courtyen

492
3
8
23

I have the same problem. Can you explain more? What should I add in order for this example to work? – Alexandru N. Onea Sep 23 '14 at 11:05
Well, my problem was that I didn't include connect-busboy. My error says that it cannot find the method 'on()' of undefined and that is because I didn't actually include the connect-busboy module. So, to fix this, at the top of my express file, I simply said: require('connect-busboy'); – courtyen Sep 25 '14 at 00:52

Why do I get undefined when trying to parse POST request with busboy? Using MEAN.IO stack

1 Answers1