Parse form value with formidable to filename

Question

I´m using formidable to handle my file uploads in NodeJs. I´m a little stuck at parsing field values.

How do I get the value of project_id to the form handler, so I can

Answer 1

Formidable's end callback doesn't take any parameters, but I'm not sure you even need to call it if you're using the parse callback. I think what you're looking for is something like this:

var fs = require('fs');
app.post('/uploads', function(req, res, next) {
    var form = new formidable.IncomingForm();
    form.parse(req, function(err, fields, files) {
        if (err) next(err);

        // TODO: make sure my_file and project_id exist    
        fs.rename(files.my_file.path, fields.project_id, function(err) {
            if (err) next(err);
            res.end();
        });
    });
});

You would need to listen for the end() event if you chose not to use the parse callback, like this:

new formidable.IncomingForm().parse(req)
    .on('file', function(name, file) {
        console.log('Got file:', name);
    })
    .on('field', function(name, field) {
        console.log('Got a field:', name);
    })
    .on('error', function(err) {
        next(err);
    })
    .on('end', function() {
        res.end();
    });