Allow fields that have multiple values

lib/storage-handler.js

@@ -26,6 +26,7 @@ Uploader.prototype.processUpload = function (req, res, cb) {
     var client = this.client;
     var form = new IncomingForm(this.options);
     var container = req.params.container;
+    var fields = {}, files = {};
     form.handlePart = function (part) {
         var self = this;
 
@@ -43,7 +44,14 @@ Uploader.prototype.processUpload = function (req, res, cb) {
             });
 
             part.on('end', function () {
-                self.emit('field', part.name, value);
+                var values = fields[part.name];
+                if(values === undefined) {
+                    values = [value];
+                    fields[part.name] = values;
+                } else {
+                    values.push(value);
+                }
+                self.emit('field', part.name + '[' + (values.length -1) + ']', value);
             });
             return;
         }
@@ -70,13 +78,20 @@ Uploader.prototype.processUpload = function (req, res, cb) {
         part.on('end', function () {
             writer.end(function () {
                 self._flushing--;
-                self.emit('file', part.name + ':' + file.name, file);
+                var values = files[part.name];
+                if(values === undefined) {
+                    values = [file];
+                    files[part.name] = values;
+                } else {
+                    values.push(file);
+                }
+                self.emit('file', part.name + '[' + (values.length -1) + ']', file);
                 self._maybeEnd();
             });
         });
     };
 
-    form.parse(req, function (err, fields, files) {
+    form.parse(req, function (err, _fields, _files) {
         cb && cb(err, {files: files, fields: fields});
     });
 }