diff --git a/rest_framework/parsers.py b/rest_framework/parsers.py
index 96bfac84a..c635505a4 100644
--- a/rest_framework/parsers.py
+++ b/rest_framework/parsers.py
@@ -10,9 +10,9 @@ from django.core.files.uploadhandler import StopFutureHandlers
 from django.http import QueryDict
 from django.http.multipartparser import MultiPartParser as DjangoMultiPartParser
 from django.http.multipartparser import MultiPartParserError, parse_header, ChunkIter
-from rest_framework.compat import yaml, etree
+from rest_framework.compat import etree, six, yaml
 from rest_framework.exceptions import ParseError
-from rest_framework.compat import six
+from rest_framework.renderers import UnicodeJSONRenderer
 import json
 import datetime
 import decimal
@@ -32,6 +32,8 @@ class BaseParser(object):
 
     media_type = None
 
+    supports_html_forms = False
+
     def parse(self, stream, media_type=None, parser_context=None):
         """
         Given a stream to read from, return the parsed representation.
@@ -47,6 +49,7 @@ class JSONParser(BaseParser):
     """
 
     media_type = 'application/json'
+    renderer_class = UnicodeJSONRenderer
 
     def parse(self, stream, media_type=None, parser_context=None):
         """
@@ -91,6 +94,7 @@ class FormParser(BaseParser):
     """
 
     media_type = 'application/x-www-form-urlencoded'
+    supports_html_forms = True
 
     def parse(self, stream, media_type=None, parser_context=None):
         """
@@ -109,6 +113,7 @@ class MultiPartParser(BaseParser):
     """
 
     media_type = 'multipart/form-data'
+    supports_html_forms = True
 
     def parse(self, stream, media_type=None, parser_context=None):
         """
diff --git a/rest_framework/renderers.py b/rest_framework/renderers.py
index b30f2ea9f..cc8de9590 100644
--- a/rest_framework/renderers.py
+++ b/rest_framework/renderers.py
@@ -24,7 +24,7 @@ from rest_framework.settings import api_settings
 from rest_framework.request import clone_request
 from rest_framework.utils import encoders
 from rest_framework.utils.breadcrumbs import get_breadcrumbs
-from rest_framework import exceptions, parsers, status, VERSION
+from rest_framework import exceptions, status, VERSION
 
 
 class BaseRenderer(object):
@@ -482,7 +482,7 @@ class BrowsableAPIRenderer(BaseRenderer):
         if method in ('DELETE', 'OPTIONS'):
             return True  # Don't actually need to return a form
 
-        if not getattr(view, 'get_serializer', None) or not parsers.FormParser in view.parser_classes:
+        if not getattr(view, 'get_serializer', None) or not any(parser.supports_html_forms for parser in view.parser_classes):
             return
 
         serializer = view.get_serializer(instance=obj)
@@ -561,6 +561,29 @@ class BrowsableAPIRenderer(BaseRenderer):
         view = renderer_context['view']
         request = renderer_context['request']
         response = renderer_context['response']
+
+        obj = getattr(view, 'object', None)
+        if getattr(view, 'get_serializer', None):
+            serializer = view.get_serializer(instance=obj)
+        else:
+            serializer = None
+
+        parsers = []
+        for parser_class in view.parser_classes:
+            content = None
+            renderer_class = getattr(parser_class, 'renderer_class', None)
+            if renderer_class and serializer:
+                renderer = renderer_class()
+                context = renderer_context.copy()
+                context['indent'] = 4
+                content = renderer.render(serializer.data, accepted_media_type, context)
+                print content
+            parsers.append({
+                'media_type': parser_class.media_type,
+                'content': content
+            })
+
+
         media_types = [parser.media_type for parser in view.parser_classes]
 
         renderer = self.get_default_renderer(view)
diff --git a/rest_framework/serializers.py b/rest_framework/serializers.py
index abff68983..202d3a096 100644
--- a/rest_framework/serializers.py
+++ b/rest_framework/serializers.py
@@ -304,6 +304,8 @@ class BaseSerializer(WritableField):
         ret.empty = obj is None
 
         for field_name, field in self.fields.items():
+            if obj is None and field.read_only:
+                continue
             field.initialize(parent=self, field_name=field_name)
             key = self.get_field_key(field_name)
             value = field.field_to_native(obj, field_name)
diff --git a/rest_framework/tests/test_serializer.py b/rest_framework/tests/test_serializer.py
index c24976603..7c2a276ed 100644
--- a/rest_framework/tests/test_serializer.py
+++ b/rest_framework/tests/test_serializer.py
@@ -158,7 +158,7 @@ class BasicTests(TestCase):
             'email': '',
             'content': '',
             'created': None,
-            'sub_comment': ''
+            #'sub_comment': ''
         }
         self.assertEqual(serializer.data, expected)