add multipart-form example

README.textile

@@ -6,7 +6,7 @@ p. Picard uses Haml thanks to creationix's haml-js project.
 
 p. Check the examples to see what is possible. 
 
-p. master branch was last tested against node.js v0.3.7.
+p. master branch was last tested against node.js v0.4.0.
 
 h3. License
 

examples/upload/app.js

@@ -0,0 +1,31 @@
+var Picard = require('../../lib/picard').start()
+
+// Picard doesn't handle multipart form upload by default,
+// so you'll have to pull in your own library if you need it:
+
+var formidable = require('formidable') // see https://github.com/felixge/node-formidable
+var sys = require('sys')
+
+Picard.post('/upload', function(request){
+  var form = new formidable.IncomingForm()
+
+  form
+    .on('field', function(field, value) { request[field] = value })
+    .on('file', function(field, file) { request[field] = file })
+    .on('error', function(err){ request.handleException(err) })
+    .on('end', function(){ 
+      request.onScreen(
+        'Title field: ' + request.title + '<br />' +
+        'Uploaded file: ' + sys.inspect(request.upload)
+      ) 
+    })
+    .parse(request)
+})
+
+Picard.get('/', function(){
+  return '<form action="/upload" enctype="multipart/form-data" method="post">'+
+  '<input type="text" name="title"><br>'+
+  '<input type="file" name="upload" multiple="multiple"><br>'+
+  '<input type="submit" value="Upload">'+
+  '</form>'
+})

lib/picard/request.js

@@ -127,6 +127,9 @@ var RequestExtensions = {
       req.handleException(ex)
     }
   },
+  isMultipart: function(){
+    return (this.headers['content-type'] || '').indexOf('multipart/form-data') != -1
+  },
   cookie: function(name, val, options){
     if ( val === undefined )
       return this.cookies[name]

lib/picard/server.js

@@ -6,10 +6,13 @@ var Server = {
 
     this.httpServer = http.createServer(function(request, response) {
       request.response = response
-
-      request
-        .on('data', request.extractFormParams)
-        .on('end', request.pass)
+
+      if ( request.isMultipart() )
+        request.pass()
+      else
+        request
+          .on('data', request.extractFormParams)
+          .on('end', request.pass)
     }).
       listen(this.env.port)