Express + node-formidable code sample

gistfile1.coffee

formidable = require 'formidable'

app.configure ()->
  app.set 'views', __dirname + '/views'
  app.set 'view engine', 'jade'
  app.use (req, res, next)->
    contentType = req.headers['content-type']
    if contentType? && contentType.match /multipart\/form-data/
      form = new formidable.IncomingForm()
      form.uploadDir = __dirname + '/temp'
      fields = {}
      file_elements = {}
      form.on 'field', (name, value)->
          fields[name] = value
        .on 'fileBegin', (name, file)->
          file_elements[name] = [] unless file_elements[name]?
        .on 'file', (name, file)->
          file_elements[name].push file
        .on 'end', ()->
          req.body = fields
          # if it is necessary, you can move or rename files here.
          for element_name, files of file_elements
            req.body[element_name] = files
          next()
      form.parse req
    else
      next()
  app.use express.bodyParser() 
  app.use express.cookieParser()
  #omit the rest