Restore multipart/form-data support

binding/binding.go

@@ -28,9 +28,10 @@ type Binding interface {
 var validate = validator.New("binding", validator.BakedInValidators)
 
 var (
-	JSON = jsonBinding{}
-	XML  = xmlBinding{}
-	Form = formBinding{}
+	XML           = xmlBinding{}
+	JSON          = jsonBinding{}
+	Form          = formBinding{}
+	MultipartForm = MultipartFormBinding{}
 )
 
 func Default(method, contentType string) Binding {
@@ -42,6 +43,8 @@ func Default(method, contentType string) Binding {
 			return JSON
 		case MIMEXML, MIMEXML2:
 			return XML
+		case MIMEMultipartPOSTForm:
+			return MultipartForm
 		default:
 			return Form
 		}

binding/form_multipart.go

@@ -0,0 +1,25 @@
+// Copyright 2014 Manu Martinez-Almeida.  All rights reserved.
+// Use of this source code is governed by a MIT style
+// license that can be found in the LICENSE file.
+
+package binding
+
+import "net/http"
+
+const MAX_MEMORY = 1 * 1024 * 1024
+
+type multipartFormBinding struct{}
+
+func (_ multipartFormBinding) Name() string {
+	return "multipart form"
+}
+
+func (_ multipartFormBinding) Bind(req *http.Request, obj interface{}) error {
+	if err := req.ParseMultipartForm(MAX_MEMORY); err != nil {
+		return err
+	}
+	if err := mapForm(obj, req.Form); err != nil {
+		return err
+	}
+	return Validate(obj)
+}