Merge pull request #792 from maspwr/writable-nested-modelserializer

Writable nested modelserializer (merge in master)

docs/api-guide/authentication.md

@@ -107,7 +107,7 @@ Unauthenticated responses that are denied permission will result in an `HTTP 401
 
     WWW-Authenticate: Basic realm="api"
 
-**Note:** If you use `BasicAuthentication` in production you must ensure that your API is only available over `https` only.  You should also ensure that your API clients will always re-request the username and password at login, and will never store those details to persistent storage.
+**Note:** If you use `BasicAuthentication` in production you must ensure that your API is only available over `https`.  You should also ensure that your API clients will always re-request the username and password at login, and will never store those details to persistent storage.
 
 ## TokenAuthentication
 
@@ -119,6 +119,8 @@ To use the `TokenAuthentication` scheme, include `rest_framework.authtoken` in y
         ...
         'rest_framework.authtoken'
     )
+    
+Make sure to run `manage.py syncdb` after changing your settings.
 
 You'll also need to create tokens for your users.
 
@@ -140,9 +142,13 @@ Unauthenticated responses that are denied permission will result in an `HTTP 401
 
     WWW-Authenticate: Token
 
+The `curl` command line tool may be useful for testing token authenticated APIs.  For example:
+
+    curl -X GET http://127.0.0.1:8000/api/example/ -H 'Authorization: Token 9944b09199c62bcf9418ad846dd0e4bbdfc6ee4b'
+
 ---
 
-**Note:** If you use `TokenAuthentication` in production you must ensure that your API is only available over `https` only.
+**Note:** If you use `TokenAuthentication` in production you must ensure that your API is only available over `https`.
 
 ---
 
@@ -253,7 +259,7 @@ Finally, sync your database.
 
 ---
 
-**Note:** If you use `OAuth2Authentication` in production you must ensure that your API is only available over `https` only.
+**Note:** If you use `OAuth2Authentication` in production you must ensure that your API is only available over `https`.
 
 ---
 
@@ -294,7 +300,7 @@ The only thing needed to make the `OAuth2Authentication` class work is to insert
 
 The command line to test the authentication looks like:
 
-    curl -H "Authorization: Bearer <your-access-token>" http://localhost:8000/api/?client_id=YOUR_CLIENT_ID\&client_secret=YOUR_CLIENT_SECRET
+    curl -H "Authorization: Bearer <your-access-token>" http://localhost:8000/api/
 
 ---
 

docs/api-guide/fields.md

@@ -197,12 +197,16 @@ If you want to override this behavior, you'll need to declare the `DateTimeField
         class Meta:
             model = Comment
 
+Note that by default, datetime representations are deteremined by the renderer in use, although this can be explicitly overridden as detailed below.
+
+In the case of JSON this means the default datetime representation uses the [ECMA 262 date time string specification][ecma262].  This is a subset of ISO 8601 which uses millisecond precision, and includes the 'Z' suffix for the UTC timezone, for example: `2013-01-29T12:34:56.123Z`.
+
 **Signature:** `DateTimeField(format=None, input_formats=None)`
 
 * `format` - A string representing the output format.  If not specified, this defaults to `None`, which indicates that python `datetime` objects should be returned by `to_native`.  In this case the datetime encoding will be determined by the renderer. 
 * `input_formats` - A list of strings representing the input formats which may be used to parse the date. If not specified, the `DATETIME_INPUT_FORMATS` setting will be used, which defaults to `['iso-8601']`.
 
-DateTime format strings may either be [python strftime formats][strftime] which explicitly specifiy the format, or the special string `'iso-8601'`, which indicates that [ISO 8601][iso8601] style datetimes should be used. (eg `'2013-01-29T12:34:56.000000'`)
+DateTime format strings may either be [python strftime formats][strftime] which explicitly specifiy the format, or the special string `'iso-8601'`, which indicates that [ISO 8601][iso8601] style datetimes should be used. (eg `'2013-01-29T12:34:56.000000Z'`)
 
 ## DateField
 
@@ -318,5 +322,6 @@ As an example, let's create a field that can be used represent the class name of
 
 [cite]: https://docs.djangoproject.com/en/dev/ref/forms/api/#django.forms.Form.cleaned_data
 [FILE_UPLOAD_HANDLERS]: https://docs.djangoproject.com/en/dev/ref/settings/#std:setting-FILE_UPLOAD_HANDLERS
+[ecma262]: http://ecma-international.org/ecma-262/5.1/#sec-15.9.1.15
 [strftime]: http://docs.python.org/2/library/datetime.html#strftime-and-strptime-behavior
 [iso8601]: http://www.w3.org/TR/NOTE-datetime

docs/api-guide/generic-views.md

@@ -200,7 +200,7 @@ Should be mixed in with any [GenericAPIView].
 
 Provides a `.retrieve(request, *args, **kwargs)` method, that implements returning an existing model instance in a response.
 
-If an object can be retrieve this returns a `200 OK` response, with a serialized representation of the object as the body of the response.  Otherwise it will return a `404 Not Found`.
+If an object can be retrieved this returns a `200 OK` response, with a serialized representation of the object as the body of the response.  Otherwise it will return a `404 Not Found`.
 
 Should be mixed in with [SingleObjectAPIView].
 

docs/api-guide/serializers.md

@@ -242,21 +242,21 @@ This allows you to write views that update or create multiple items when a `PUT`
     # True
     serialize.save()  # `.save()` will be called on each updated or newly created instance.
 
-Bulk updates will update any instances that already exist, and create new instances for data items that do not have a corresponding instance.
+By default bulk updates will be limited to updating instances that already exist in the provided queryset.
 
-When performing a bulk update you may want any items that are not present in the incoming data to be deleted.  To do so, pass `allow_add_remove=True` to the serializer.
+When performing a bulk update you may want to allow new items to be created, and missing items to be deleted.  To do so, pass `allow_add_remove=True` to the serializer.
 
     serializer = BookSerializer(queryset, data=data, many=True, allow_add_remove=True)
     serializer.is_valid()
     # True
-    serializer.save()  # `.save()` will be called on each updated or newly created instance.
+    serializer.save()  # `.save()` will be called on updated or newly created instances.
                        # `.delete()` will be called on any other items in the `queryset`.
 
-Passing `allow_add_remove=True` ensures that any update operations will completely overwrite the existing queryset, rather than simply updating any objects found in the incoming data. 
+Passing `allow_add_remove=True` ensures that any update operations will completely overwrite the existing queryset, rather than simply updating existing objects.
 
 #### How identity is determined when performing bulk updates
 
-Performing a bulk update is slightly more complicated than performing a bulk creation, because the serializer needs a way of determining how the items in the incoming data should be matched against the existing object instances.
+Performing a bulk update is slightly more complicated than performing a bulk creation, because the serializer needs a way to determine how the items in the incoming data should be matched against the existing object instances.
 
 By default the serializer class will use the `id` key on the incoming data to determine the canonical identity of an object.  If you need to change this behavior you should override the `get_identity` method on the `Serializer` class.  For example:
 
@@ -353,7 +353,7 @@ The `depth` option should be set to an integer value that indicates the depth of
 
 ## Specifying which fields should be read-only 
 
-You may wish to specify multiple fields as read-only. Instead of adding each field explicitely with the `read_only=True` attribute, you may use the `read_only_fields` Meta option, like so:
+You may wish to specify multiple fields as read-only. Instead of adding each field explicitly with the `read_only=True` attribute, you may use the `read_only_fields` Meta option, like so:
 
     class AccountSerializer(serializers.ModelSerializer):
         class Meta:

docs/css/default.css

@@ -277,3 +277,14 @@ footer a {
 footer a:hover {
   color: gray;
 }
+
+.btn-inverse {
+  background-image: -webkit-gradient(linear, 0 0, 0 100%, from(#606060), to(#404040)) !important;
+  background-image: -webkit-linear-gradient(top, #606060, #404040) !important;
+}
+
+.modal-open .modal,.btn:focus{outline:none;}
+
+@media (max-width: 650px) {
+  .repo-link.btn-inverse {display: none;}
+}

docs/index.md

@@ -9,9 +9,9 @@
 
 # Django REST framework
 
-**Web APIs for Django, made easy.**
+**Awesome web-browseable Web APIs.**
 
-Django REST framework is a flexible, powerful library that makes it incredibly easy to build Web APIs.  It is designed as a modular and easy to customize architecture, based on Django's class based views.
+Django REST framework is a flexible, powerful Web API toolkit.  It is designed as a modular and easy to customize architecture, based on Django's class based views.
 
 APIs built using REST framework are fully self-describing and web browseable - a huge useability win for your developers.  It also supports a wide range of media types, authentication and permission policies out of the box.
 

docs/template.html

@@ -41,6 +41,9 @@
       <div class="navbar-inner">
         <div class="container-fluid">
             <a class="repo-link btn btn-primary btn-small" href="https://github.com/tomchristie/django-rest-framework/tree/master">GitHub</a>
+            <a class="repo-link btn btn-inverse btn-small {{ next_url_disabled }}" href="{{ next_url }}">Next <i class="icon-arrow-right icon-white"></i></a>
+            <a class="repo-link btn btn-inverse btn-small {{ prev_url_disabled }}" href="{{ prev_url }}"><i class="icon-arrow-left icon-white"></i> Previous</a>
+            <a class="repo-link btn btn-inverse btn-small" href="#searchModal" data-toggle="modal"><i class="icon-search icon-white"></i> Search</a>
           <a class="btn btn-navbar" data-toggle="collapse" data-target=".nav-collapse">
             <span class="icon-bar"></span>
             <span class="icon-bar"></span>
@@ -118,6 +121,34 @@
 
     <div class="body-content">
       <div class="container-fluid">
+
+<!-- Search Modal -->
+<div id="searchModal" class="modal hide fade" tabindex="-1" role="dialog" aria-labelledby="myModalLabel" aria-hidden="true">
+  <div class="modal-header">
+    <button type="button" class="close" data-dismiss="modal" aria-hidden="true">&times;</button>
+    <h3 id="myModalLabel">Documentation search</h3>
+  </div>
+  <div class="modal-body">
+    <!-- Custom google search -->
+    <script>
+      (function() {
+        var cx = '015016005043623903336:rxraeohqk6w';
+        var gcse = document.createElement('script');
+        gcse.type = 'text/javascript';
+        gcse.async = true;
+        gcse.src = (document.location.protocol == 'https:' ? 'https:' : 'http:') +
+            '//www.google.com/cse/cse.js?cx=' + cx;
+        var s = document.getElementsByTagName('script')[0];
+        s.parentNode.insertBefore(gcse, s);
+      })();
+    </script>
+    <gcse:search></gcse:search>
+  </div>
+  <div class="modal-footer">
+    <button class="btn" data-dismiss="modal" aria-hidden="true">Close</button>
+  </div>
+</div>
+
         <div class="row-fluid">
 
           <div class="span3">

docs/topics/contributing.md

@@ -18,7 +18,7 @@ When answering questions make sure to help future contributors find their way ar
 
 # Issues
 
-Usage questions should be directed to the [discussion group][google-group].  Feature requests, bug reports and other issues should be raised on the GitHub [issue tracker][issues].
+It's really helpful if you make sure you address issues to the correct channel.  Usage questions should be directed to the [discussion group][google-group].  Feature requests, bug reports and other issues should be raised on the GitHub [issue tracker][issues].
 
 Some tips on good issue reporting:
 

docs/topics/credits.md

@@ -112,6 +112,10 @@ The following people have helped make REST framework great.
 * Bouke Haarsma - [bouke]
 * Pierre Dulac - [dulaccc]
 * Dave Kuhn - [kuhnza]
+* Sitong Peng - [stoneg]
+* Victor Shih - [vshih]
+* Atle Frenvik Sveen - [atlefren]
+* J. Paul Reed - [preed]
 
 Many thanks to everyone who's contributed to the project.
 
@@ -258,3 +262,7 @@ You can also contact [@_tomchristie][twitter] directly on twitter.
 [bouke]: https://github.com/bouke
 [dulaccc]: https://github.com/dulaccc
 [kuhnza]: https://github.com/kuhnza
+[stoneg]: https://github.com/stoneg
+[vshih]: https://github.com/vshih
+[atlefren]: https://github.com/atlefren
+[preed]: https://github.com/preed

docs/topics/release-notes.md

@@ -40,8 +40,22 @@ You can determine your currently installed version using `pip freeze`:
 
 ## 2.2.x series
 
-### Master
+### 2.2.6
 
+**Date**: 4th April 2013
+
+* OAuth2 authentication no longer requires unneccessary URL parameters in addition to the token.
+* URL hyperlinking in browseable API now handles more cases correctly.
+* Long HTTP headers in browsable API are broken in multiple lines when possible.
+* Bugfix: Fix regression with DjangoFilterBackend not worthing correctly with single object views.
+* Bugfix: OAuth should fail hard when invalid token used.
+* Bugfix: Fix serializer potentially returning `None` object for models that define `__bool__` or `__len__`. 
+
+### 2.2.5
+
+**Date**: 26th March 2013
+
+* Serializer support for bulk create and bulk update operations.
 * Regression fix: Date and time fields return date/time objects by default.  Fixes regressions caused by 2.2.2.  See [#743][743] for more details.
 * Bugfix: Fix 500 error is OAuth not attempted with OAuthAuthentication class installed.
 * `Serializer.save()` now supports arbitrary keyword args which are passed through to the object `.save()` method.  Mixins use `force_insert` and `force_update` where appropriate, resulting in one less database query.

docs/tutorial/4-authentication-and-permissions.md

@@ -179,7 +179,7 @@ Now, if you open a browser again, you find that the 'DELETE' and 'PUT' actions o
 
 ## Authenticating with the API
 
-Because we now have a set of permissions on the API, we need to authenticate our requests to it if we want to edit any snippets.  We havn't set up any [authentication classes][authentication], so the defaults are currently applied, which are `SessionAuthentication` and `BasicAuthentication`.
+Because we now have a set of permissions on the API, we need to authenticate our requests to it if we want to edit any snippets.  We haven't set up any [authentication classes][authentication], so the defaults are currently applied, which are `SessionAuthentication` and `BasicAuthentication`.
 
 When we interact with the API through the web browser, we can login, and the browser session will then provide the required authentication for the requests.
 

docs/tutorial/5-relationships-and-hyperlinked-apis.md

@@ -1,4 +1,4 @@
-# Tutorial 5 - Relationships & Hyperlinked APIs
+# Tutorial 5: Relationships & Hyperlinked APIs
 
 At the moment relationships within our API are represented by using primary keys.  In this part of the tutorial we'll improve the cohesion and discoverability of our API, by instead using hyperlinking for relationships. 
 

mkdocs.py

@@ -37,6 +37,60 @@ page = open(os.path.join(docs_dir, 'template.html'), 'r').read()
 #         shutil.rmtree(target)
 #     shutil.copytree(source, target)
 
+
+# Hacky, but what the hell, it'll do the job
+path_list = [
+    'index.md',
+    'tutorial/quickstart.md',
+    'tutorial/1-serialization.md',
+    'tutorial/2-requests-and-responses.md',
+    'tutorial/3-class-based-views.md',
+    'tutorial/4-authentication-and-permissions.md',
+    'tutorial/5-relationships-and-hyperlinked-apis.md',
+    'api-guide/requests.md',
+    'api-guide/responses.md',
+    'api-guide/views.md',
+    'api-guide/generic-views.md',
+    'api-guide/parsers.md',
+    'api-guide/renderers.md',
+    'api-guide/serializers.md',
+    'api-guide/fields.md',
+    'api-guide/relations.md',
+    'api-guide/authentication.md',
+    'api-guide/permissions.md',
+    'api-guide/throttling.md',
+    'api-guide/filtering.md',
+    'api-guide/pagination.md',
+    'api-guide/content-negotiation.md',
+    'api-guide/format-suffixes.md',
+    'api-guide/reverse.md',
+    'api-guide/exceptions.md',
+    'api-guide/status-codes.md',
+    'api-guide/settings.md',
+    'topics/ajax-csrf-cors.md',
+    'topics/browser-enhancements.md',
+    'topics/browsable-api.md',
+    'topics/rest-hypermedia-hateoas.md',
+    'topics/contributing.md',
+    'topics/rest-framework-2-announcement.md',
+    'topics/2.2-announcement.md',
+    'topics/release-notes.md',
+    'topics/credits.md',
+]
+
+prev_url_map = {}
+next_url_map = {}
+for idx in range(len(path_list)):
+    path = path_list[idx]
+    rel = '../' * path.count('/')
+
+    if idx > 0:
+        prev_url_map[path] = rel + path_list[idx - 1][:-3] + suffix
+
+    if idx < len(path_list) - 1:
+        next_url_map[path] = rel + path_list[idx + 1][:-3] + suffix
+
+
 for (dirpath, dirnames, filenames) in os.walk(docs_dir):
     relative_dir = dirpath.replace(docs_dir, '').lstrip(os.path.sep)
     build_dir = os.path.join(html_dir, relative_dir)
@@ -46,6 +100,7 @@ for (dirpath, dirnames, filenames) in os.walk(docs_dir):
 
     for filename in filenames:
         path = os.path.join(dirpath, filename)
+        relative_path = os.path.join(relative_dir, filename)
 
         if not filename.endswith('.md'):
             if relative_dir:
@@ -78,16 +133,34 @@ for (dirpath, dirnames, filenames) in os.walk(docs_dir):
             toc += template + '\n'
 
         if filename == 'index.md':
-            main_title = 'Django REST framework - APIs made easy'
+            main_title = 'Django REST framework - Web Browseable APIs'
         else:
             main_title = 'Django REST framework - ' + main_title
 
+        prev_url = prev_url_map.get(relative_path)
+        next_url = next_url_map.get(relative_path)
+
         content = markdown.markdown(text, ['headerid'])
 
         output = page.replace('{{ content }}', content).replace('{{ toc }}', toc).replace('{{ base_url }}', base_url).replace('{{ suffix }}', suffix).replace('{{ index }}', index)
         output = output.replace('{{ title }}', main_title)
         output = output.replace('{{ description }}', description)
         output = output.replace('{{ page_id }}', filename[:-3])
+
+        if prev_url:
+            output = output.replace('{{ prev_url }}', prev_url)
+            output = output.replace('{{ prev_url_disabled }}', '')
+        else:
+            output = output.replace('{{ prev_url }}', '#')
+            output = output.replace('{{ prev_url_disabled }}', 'disabled')
+
+        if next_url:
+            output = output.replace('{{ next_url }}', next_url)
+            output = output.replace('{{ next_url_disabled }}', '')
+        else:
+            output = output.replace('{{ next_url }}', '#')
+            output = output.replace('{{ next_url_disabled }}', 'disabled')
+
         output = re.sub(r'a href="([^"]*)\.md"', r'a href="\1%s"' % suffix, output)
         output = re.sub(r'<pre><code>:::bash', r'<pre class="prettyprint lang-bsh">', output)
         output = re.sub(r'<pre>', r'<pre class="prettyprint lang-py">', output)

rest_framework/__init__.py

@@ -1,4 +1,4 @@
-__version__ = '2.2.4'
+__version__ = '2.2.6'
 
 VERSION = __version__  # synonym
 

rest_framework/authentication.py

@@ -2,14 +2,16 @@
 Provides a set of pluggable authentication policies.
 """
 from __future__ import unicode_literals
+import base64
+from datetime import datetime
+
 from django.contrib.auth import authenticate
 from django.core.exceptions import ImproperlyConfigured
 from rest_framework import exceptions, HTTP_HEADER_ENCODING
 from rest_framework.compat import CsrfViewMiddleware
 from rest_framework.compat import oauth, oauth_provider, oauth_provider_store
-from rest_framework.compat import oauth2_provider, oauth2_provider_forms, oauth2_provider_backends
+from rest_framework.compat import oauth2_provider
 from rest_framework.authtoken.models import Token
-import base64
 
 
 def get_authorization_header(request):
@@ -228,7 +230,7 @@ class OAuthAuthentication(BaseAuthentication):
         try:
             consumer_key = oauth_request.get_parameter('oauth_consumer_key')
             consumer = oauth_provider_store.get_consumer(request, oauth_request, consumer_key)
-        except oauth_provider_store.InvalidConsumerError as err:
+        except oauth_provider.store.InvalidConsumerError as err:
             raise exceptions.AuthenticationFailed(err)
 
         if consumer.status != oauth_provider.consts.ACCEPTED:
@@ -238,7 +240,7 @@ class OAuthAuthentication(BaseAuthentication):
         try:
             token_param = oauth_request.get_parameter('oauth_token')
             token = oauth_provider_store.get_access_token(request, oauth_request, consumer, token_param)
-        except oauth_provider_store.InvalidTokenError:
+        except oauth_provider.store.InvalidTokenError:
             msg = 'Invalid access token: %s' % oauth_request.get_parameter('oauth_token')
             raise exceptions.AuthenticationFailed(msg)
 
@@ -315,16 +317,12 @@ class OAuth2Authentication(BaseAuthentication):
         Authenticate the request, given the access token.
         """
 
-        # Authenticate the client
-        oauth2_client_form = oauth2_provider_forms.ClientAuthForm(request.REQUEST)
-        if not oauth2_client_form.is_valid():
-            raise exceptions.AuthenticationFailed('Client could not be validated')
-        client = oauth2_client_form.cleaned_data.get('client')
-
-        # Retrieve the `OAuth2AccessToken` instance from the access_token
-        auth_backend = oauth2_provider_backends.AccessTokenBackend()
-        token = auth_backend.authenticate(access_token, client)
-        if token is None:
+        try:
+            token = oauth2_provider.models.AccessToken.objects.select_related('user')
+            # TODO: Change to timezone aware datetime when oauth2_provider add
+            # support to it.
+            token = token.get(token=access_token, expires__gt=datetime.now())
+        except oauth2_provider.models.AccessToken.DoesNotExist:
             raise exceptions.AuthenticationFailed('Invalid token')
 
         user = token.user
@@ -333,7 +331,7 @@ class OAuth2Authentication(BaseAuthentication):
             msg = 'User inactive or deleted: %s' % user.username
             raise exceptions.AuthenticationFailed(msg)
 
-        return (token.user, token)
+        return (user, token)
 
     def authenticate_header(self, request):
         """

rest_framework/compat.py

@@ -395,6 +395,41 @@ except ImportError:
             kw = dict((k, int(v)) for k, v in kw.iteritems() if v is not None)
             return datetime.datetime(**kw)
 
+
+# smart_urlquote is new on Django 1.4
+try:
+    from django.utils.html import smart_urlquote
+except ImportError:
+    import re
+    from django.utils.encoding import smart_str
+    try:
+        from urllib.parse import quote, urlsplit, urlunsplit
+    except ImportError:     # Python 2
+        from urllib import quote
+        from urlparse import urlsplit, urlunsplit
+
+    unquoted_percents_re = re.compile(r'%(?![0-9A-Fa-f]{2})')
+
+    def smart_urlquote(url):
+        "Quotes a URL if it isn't already quoted."
+        # Handle IDN before quoting.
+        scheme, netloc, path, query, fragment = urlsplit(url)
+        try:
+            netloc = netloc.encode('idna').decode('ascii')  # IDN -> ACE
+        except UnicodeError:  # invalid domain part
+            pass
+        else:
+            url = urlunsplit((scheme, netloc, path, query, fragment))
+
+        # An URL is considered unquoted if it contains no % characters or
+        # contains a % not followed by two hexadecimal digits. See #9655.
+        if '%' not in url or unquoted_percents_re.search(url):
+            # See http://bugs.python.org/issue2637
+            url = quote(smart_str(url), safe=b'!*\'();:@&=+$,/?#[]~')
+
+        return force_text(url)
+
+
 # Markdown is optional
 try:
     import markdown
@@ -445,14 +480,12 @@ except ImportError:
 # OAuth 2 support is optional
 try:
     import provider.oauth2 as oauth2_provider
-    from provider.oauth2 import backends as oauth2_provider_backends
     from provider.oauth2 import models as oauth2_provider_models
     from provider.oauth2 import forms as oauth2_provider_forms
     from provider import scope as oauth2_provider_scope
     from provider import constants as oauth2_constants
 except ImportError:
     oauth2_provider = None
-    oauth2_provider_backends = None
     oauth2_provider_models = None
     oauth2_provider_forms = None
     oauth2_provider_scope = None

rest_framework/filters.py

@@ -55,6 +55,6 @@ class DjangoFilterBackend(BaseFilterBackend):
         filter_class = self.get_filter_class(view)
 
         if filter_class:
-            return filter_class(request.QUERY_PARAMS, queryset=queryset)
+            return filter_class(request.QUERY_PARAMS, queryset=queryset).qs
 
         return queryset

rest_framework/generics.py

@@ -130,6 +130,7 @@ class SingleObjectAPIView(SingleObjectMixin, GenericAPIView):
         """
         Override default to add support for object-level permissions.
         """
+        queryset = self.filter_queryset(self.get_queryset())
         obj = super(SingleObjectAPIView, self).get_object(queryset)
         self.check_object_permissions(self.request, obj)
         return obj

rest_framework/mixins.py

@@ -97,9 +97,7 @@ class RetrieveModelMixin(object):
     Should be mixed in with `SingleObjectAPIView`.
     """
     def retrieve(self, request, *args, **kwargs):
-        queryset = self.get_queryset()
-        filtered_queryset = self.filter_queryset(queryset)
-        self.object = self.get_object(filtered_queryset)
+        self.object = self.get_object()
         serializer = self.get_serializer(self.object)
         return Response(serializer.data)
 

rest_framework/serializers.py

@@ -457,6 +457,10 @@ class BaseSerializer(WritableField):
                             # Determine which object we're updating
                             identity = self.get_identity(item)
                             self.object = identity_to_objects.pop(identity, None)
+                            if self.object is None and not self.allow_add_remove:
+                                ret.append(None)
+                                errors.append({'non_field_errors': ['Cannot create a new item, only existing items may be updated.']})
+                                continue
 
                         ret.append(self.from_native(item, None))
                         errors.append(self._errors)
@@ -466,7 +470,7 @@ class BaseSerializer(WritableField):
 
                     self._errors = any(errors) and errors or []
                 else:
-                    self._errors = {'non_field_errors': ['Expected a list of items']}
+                    self._errors = {'non_field_errors': ['Expected a list of items.']}
             else:
                 ret = self.from_native(data, files)
 
@@ -766,7 +770,7 @@ class ModelSerializer(Serializer):
         Override the default method to also include model field validation.
         """
         instance = super(ModelSerializer, self).from_native(data, files)
-        if instance:
+        if not self._errors:
             return self.full_clean(instance)
 
     def save_object(self, obj, **kwargs):

rest_framework/templates/rest_framework/base.html

@@ -115,7 +115,7 @@
             </div>
             <div class="response-info">
                 <pre class="prettyprint"><div class="meta nocode"><b>HTTP {{ response.status_code }} {{ response.status_text }}</b>{% autoescape off %}
-{% for key, val in response.items %}<b>{{ key }}:</b> <span class="lit">{{ val|urlize_quoted_links }}</span>
+{% for key, val in response.items %}<b>{{ key }}:</b> <span class="lit">{{ val|break_long_headers|urlize_quoted_links }}</span>
 {% endfor %}
 </div>{{ content|urlize_quoted_links }}</pre>{% endautoescape %}
             </div>

rest_framework/templatetags/rest_framework.py

@@ -4,11 +4,8 @@ from django.core.urlresolvers import reverse, NoReverseMatch
 from django.http import QueryDict
 from django.utils.html import escape
 from django.utils.safestring import SafeData, mark_safe
-from rest_framework.compat import urlparse
-from rest_framework.compat import force_text
-from rest_framework.compat import six
-import re
-import string
+from rest_framework.compat import urlparse, force_text, six, smart_urlquote
+import re, string
 
 register = template.Library()
 
@@ -112,22 +109,6 @@ def replace_query_param(url, key, val):
 class_re = re.compile(r'(?<=class=["\'])(.*)(?=["\'])')
 
 
-# Bunch of stuff cloned from urlize
-LEADING_PUNCTUATION = ['(', '<', '&lt;', '"', "'"]
-TRAILING_PUNCTUATION = ['.', ',', ')', '>', '\n', '&gt;', '"', "'"]
-DOTS = ['&middot;', '*', '\xe2\x80\xa2', '&#149;', '&bull;', '&#8226;']
-unencoded_ampersands_re = re.compile(r'&(?!(\w+|#\d+);)')
-word_split_re = re.compile(r'(\s+)')
-punctuation_re = re.compile('^(?P<lead>(?:%s)*)(?P<middle>.*?)(?P<trail>(?:%s)*)$' % \
-    ('|'.join([re.escape(x) for x in LEADING_PUNCTUATION]),
-    '|'.join([re.escape(x) for x in TRAILING_PUNCTUATION])))
-simple_email_re = re.compile(r'^\S+@[a-zA-Z0-9._-]+\.[a-zA-Z0-9._-]+$')
-link_target_attribute_re = re.compile(r'(<a [^>]*?)target=[^\s>]+')
-html_gunk_re = re.compile(r'(?:<br clear="all">|<i><\/i>|<b><\/b>|<em><\/em>|<strong><\/strong>|<\/?smallcaps>|<\/?uppercase>)', re.IGNORECASE)
-hard_coded_bullets_re = re.compile(r'((?:<p>(?:%s).*?[a-zA-Z].*?</p>\s*)+)' % '|'.join([re.escape(x) for x in DOTS]), re.DOTALL)
-trailing_empty_content_re = re.compile(r'(?:<p>(?:&nbsp;|\s|<br \/>)*?</p>\s*)+\Z')
-
-
 # And the template tags themselves...
 
 @register.simple_tag
@@ -195,15 +176,25 @@ def add_class(value, css_class):
     return value
 
 
+# Bunch of stuff cloned from urlize
+TRAILING_PUNCTUATION = ['.', ',', ':', ';', '.)', '"', "'"]
+WRAPPING_PUNCTUATION = [('(', ')'), ('<', '>'), ('[', ']'), ('&lt;', '&gt;'),
+                        ('"', '"'), ("'", "'")]
+word_split_re = re.compile(r'(\s+)')
+simple_url_re = re.compile(r'^https?://\[?\w', re.IGNORECASE)
+simple_url_2_re = re.compile(r'^www\.|^(?!http)\w[^@]+\.(com|edu|gov|int|mil|net|org)$', re.IGNORECASE)
+simple_email_re = re.compile(r'^\S+@\S+\.\S+$')
+
+
 @register.filter
 def urlize_quoted_links(text, trim_url_limit=None, nofollow=True, autoescape=True):
     """
     Converts any URLs in text into clickable links.
 
-    Works on http://, https://, www. links and links ending in .org, .net or
-    .com. Links can have trailing punctuation (periods, commas, close-parens)
-    and leading punctuation (opening parens) and it'll still do the right
-    thing.
+    Works on http://, https://, www. links, and also on links ending in one of
+    the original seven gTLDs (.com, .edu, .gov, .int, .mil, .net, and .org).
+    Links can have trailing punctuation (periods, commas, close-parens) and
+    leading punctuation (opening parens) and it'll still do the right thing.
 
     If trim_url_limit is not None, the URLs in link text longer than this limit
     will truncated to trim_url_limit-3 characters and appended with an elipsis.
@@ -216,24 +207,41 @@ def urlize_quoted_links(text, trim_url_limit=None, nofollow=True, autoescape=Tru
     trim_url = lambda x, limit=trim_url_limit: limit is not None and (len(x) > limit and ('%s...' % x[:max(0, limit - 3)])) or x
     safe_input = isinstance(text, SafeData)
     words = word_split_re.split(force_text(text))
-    nofollow_attr = nofollow and ' rel="nofollow"' or ''
     for i, word in enumerate(words):
         match = None
         if '.' in word or '@' in word or ':' in word:
-            match = punctuation_re.match(word)
-        if match:
-            lead, middle, trail = match.groups()
+            # Deal with punctuation.
+            lead, middle, trail = '', word, ''
+            for punctuation in TRAILING_PUNCTUATION:
+                if middle.endswith(punctuation):
+                    middle = middle[:-len(punctuation)]
+                    trail = punctuation + trail
+            for opening, closing in WRAPPING_PUNCTUATION:
+                if middle.startswith(opening):
+                    middle = middle[len(opening):]
+                    lead = lead + opening
+                # Keep parentheses at the end only if they're balanced.
+                if (middle.endswith(closing)
+                    and middle.count(closing) == middle.count(opening) + 1):
+                    middle = middle[:-len(closing)]
+                    trail = closing + trail
+
             # Make URL we want to point to.
             url = None
-            if middle.startswith('http://') or middle.startswith('https://'):
-                url = middle
-            elif middle.startswith('www.') or ('@' not in middle and \
-                    middle and middle[0] in string.ascii_letters + string.digits and \
-                    (middle.endswith('.org') or middle.endswith('.net') or middle.endswith('.com'))):
-                url = 'http://%s' % middle
-            elif '@' in middle and not ':' in middle and simple_email_re.match(middle):
-                url = 'mailto:%s' % middle
+            nofollow_attr = ' rel="nofollow"' if nofollow else ''
+            if simple_url_re.match(middle):
+                url = smart_urlquote(middle)
+            elif simple_url_2_re.match(middle):
+                url = smart_urlquote('http://%s' % middle)
+            elif not ':' in middle and simple_email_re.match(middle):
+                local, domain = middle.rsplit('@', 1)
+                try:
+                    domain = domain.encode('idna').decode('ascii')
+                except UnicodeError:
+                    continue
+                url = 'mailto:%s@%s' % (local, domain)
                 nofollow_attr = ''
+
             # Make link.
             if url:
                 trimmed = trim_url(middle)
@@ -251,4 +259,15 @@ def urlize_quoted_links(text, trim_url_limit=None, nofollow=True, autoescape=Tru
             words[i] = mark_safe(word)
         elif autoescape:
             words[i] = escape(word)
-    return mark_safe(''.join(words))
+    return ''.join(words)
+
+
+@register.filter
+def break_long_headers(header):
+    """
+    Breaks headers longer than 160 characters (~page length)
+    when possible (are comma separated)
+    """
+    if len(header) > 160 and ',' in header:
+        header = mark_safe('<br> ' + ', <br>'.join(header.split(',')))
+    return header

rest_framework/tests/authentication.py

@@ -466,17 +466,13 @@ class OAuth2Tests(TestCase):
     def _create_authorization_header(self, token=None):
         return "Bearer {0}".format(token or self.access_token.token)
 
-    def _client_credentials_params(self):
-        return {'client_id': self.CLIENT_ID, 'client_secret': self.CLIENT_SECRET}
-
     @unittest.skipUnless(oauth2_provider, 'django-oauth2-provider not installed')
     def test_get_form_with_wrong_authorization_header_token_type_failing(self):
         """Ensure that a wrong token type lead to the correct HTTP error status code"""
         auth = "Wrong token-type-obsviously"
         response = self.csrf_client.get('/oauth2-test/', {}, HTTP_AUTHORIZATION=auth)
         self.assertEqual(response.status_code, 401)
-        params = self._client_credentials_params()
-        response = self.csrf_client.get('/oauth2-test/', params, HTTP_AUTHORIZATION=auth)
+        response = self.csrf_client.get('/oauth2-test/', HTTP_AUTHORIZATION=auth)
         self.assertEqual(response.status_code, 401)
 
     @unittest.skipUnless(oauth2_provider, 'django-oauth2-provider not installed')
@@ -485,8 +481,7 @@ class OAuth2Tests(TestCase):
         auth = "Bearer wrong token format"
         response = self.csrf_client.get('/oauth2-test/', {}, HTTP_AUTHORIZATION=auth)
         self.assertEqual(response.status_code, 401)
-        params = self._client_credentials_params()
-        response = self.csrf_client.get('/oauth2-test/', params, HTTP_AUTHORIZATION=auth)
+        response = self.csrf_client.get('/oauth2-test/', HTTP_AUTHORIZATION=auth)
         self.assertEqual(response.status_code, 401)
 
     @unittest.skipUnless(oauth2_provider, 'django-oauth2-provider not installed')
@@ -495,33 +490,21 @@ class OAuth2Tests(TestCase):
         auth = "Bearer wrong-token"
         response = self.csrf_client.get('/oauth2-test/', {}, HTTP_AUTHORIZATION=auth)
         self.assertEqual(response.status_code, 401)
-        params = self._client_credentials_params()
-        response = self.csrf_client.get('/oauth2-test/', params, HTTP_AUTHORIZATION=auth)
-        self.assertEqual(response.status_code, 401)
-
-    @unittest.skipUnless(oauth2_provider, 'django-oauth2-provider not installed')
-    def test_get_form_with_wrong_client_data_failing_auth(self):
-        """Ensure GETing form over OAuth with incorrect client credentials fails"""
-        auth = self._create_authorization_header()
-        params = self._client_credentials_params()
-        params['client_id'] += 'a'
-        response = self.csrf_client.get('/oauth2-test/', params, HTTP_AUTHORIZATION=auth)
+        response = self.csrf_client.get('/oauth2-test/', HTTP_AUTHORIZATION=auth)
         self.assertEqual(response.status_code, 401)
 
     @unittest.skipUnless(oauth2_provider, 'django-oauth2-provider not installed')
     def test_get_form_passing_auth(self):
         """Ensure GETing form over OAuth with correct client credentials succeed"""
         auth = self._create_authorization_header()
-        params = self._client_credentials_params()
-        response = self.csrf_client.get('/oauth2-test/', params, HTTP_AUTHORIZATION=auth)
+        response = self.csrf_client.get('/oauth2-test/', HTTP_AUTHORIZATION=auth)
         self.assertEqual(response.status_code, 200)
 
     @unittest.skipUnless(oauth2_provider, 'django-oauth2-provider not installed')
     def test_post_form_passing_auth(self):
         """Ensure POSTing form over OAuth with correct credentials passes and does not require CSRF"""
         auth = self._create_authorization_header()
-        params = self._client_credentials_params()
-        response = self.csrf_client.post('/oauth2-test/', params, HTTP_AUTHORIZATION=auth)
+        response = self.csrf_client.post('/oauth2-test/', HTTP_AUTHORIZATION=auth)
         self.assertEqual(response.status_code, 200)
 
     @unittest.skipUnless(oauth2_provider, 'django-oauth2-provider not installed')
@@ -529,16 +512,14 @@ class OAuth2Tests(TestCase):
         """Ensure POSTing when there is no OAuth access token in db fails"""
         self.access_token.delete()
         auth = self._create_authorization_header()
-        params = self._client_credentials_params()
-        response = self.csrf_client.post('/oauth2-test/', params, HTTP_AUTHORIZATION=auth)
+        response = self.csrf_client.post('/oauth2-test/', HTTP_AUTHORIZATION=auth)
         self.assertIn(response.status_code, (status.HTTP_401_UNAUTHORIZED, status.HTTP_403_FORBIDDEN))
 
     @unittest.skipUnless(oauth2_provider, 'django-oauth2-provider not installed')
     def test_post_form_with_refresh_token_failing_auth(self):
         """Ensure POSTing with refresh token instead of access token fails"""
         auth = self._create_authorization_header(token=self.refresh_token.token)
-        params = self._client_credentials_params()
-        response = self.csrf_client.post('/oauth2-test/', params, HTTP_AUTHORIZATION=auth)
+        response = self.csrf_client.post('/oauth2-test/', HTTP_AUTHORIZATION=auth)
         self.assertIn(response.status_code, (status.HTTP_401_UNAUTHORIZED, status.HTTP_403_FORBIDDEN))
 
     @unittest.skipUnless(oauth2_provider, 'django-oauth2-provider not installed')
@@ -547,8 +528,7 @@ class OAuth2Tests(TestCase):
         self.access_token.expires = datetime.datetime.now() - datetime.timedelta(seconds=10)  # 10 seconds late
         self.access_token.save()
         auth = self._create_authorization_header()
-        params = self._client_credentials_params()
-        response = self.csrf_client.post('/oauth2-test/', params, HTTP_AUTHORIZATION=auth)
+        response = self.csrf_client.post('/oauth2-test/', HTTP_AUTHORIZATION=auth)
         self.assertIn(response.status_code, (status.HTTP_401_UNAUTHORIZED, status.HTTP_403_FORBIDDEN))
         self.assertIn('Invalid token', response.content)
 
@@ -559,10 +539,9 @@ class OAuth2Tests(TestCase):
         read_only_access_token.scope = oauth2_provider_scope.SCOPE_NAME_DICT['read']
         read_only_access_token.save()
         auth = self._create_authorization_header(token=read_only_access_token.token)
-        params = self._client_credentials_params()
-        response = self.csrf_client.get('/oauth2-with-scope-test/', params, HTTP_AUTHORIZATION=auth)
+        response = self.csrf_client.get('/oauth2-with-scope-test/', HTTP_AUTHORIZATION=auth)
         self.assertEqual(response.status_code, 200)
-        response = self.csrf_client.post('/oauth2-with-scope-test/', params, HTTP_AUTHORIZATION=auth)
+        response = self.csrf_client.post('/oauth2-with-scope-test/', HTTP_AUTHORIZATION=auth)
         self.assertEqual(response.status_code, status.HTTP_403_FORBIDDEN)
 
     @unittest.skipUnless(oauth2_provider, 'django-oauth2-provider not installed')
@@ -572,6 +551,5 @@ class OAuth2Tests(TestCase):
         read_write_access_token.scope = oauth2_provider_scope.SCOPE_NAME_DICT['write']
         read_write_access_token.save()
         auth = self._create_authorization_header(token=read_write_access_token.token)
-        params = self._client_credentials_params()
-        response = self.csrf_client.post('/oauth2-with-scope-test/', params, HTTP_AUTHORIZATION=auth)
+        response = self.csrf_client.post('/oauth2-with-scope-test/', HTTP_AUTHORIZATION=auth)
         self.assertEqual(response.status_code, 200)

rest_framework/tests/filterset.py

@@ -1,11 +1,12 @@
 from __future__ import unicode_literals
 import datetime
 from decimal import Decimal
+from django.core.urlresolvers import reverse
 from django.test import TestCase
 from django.test.client import RequestFactory
 from django.utils import unittest
 from rest_framework import generics, status, filters
-from rest_framework.compat import django_filters
+from rest_framework.compat import django_filters, patterns, url
 from rest_framework.tests.models import FilterableItem, BasicModel
 
 factory = RequestFactory()
@@ -46,12 +47,21 @@ if django_filters:
         filter_class = MisconfiguredFilter
         filter_backend = filters.DjangoFilterBackend
 
+    class FilterClassDetailView(generics.RetrieveAPIView):
+        model = FilterableItem
+        filter_class = SeveralFieldsFilter
+        filter_backend = filters.DjangoFilterBackend
 
-class IntegrationTestFiltering(TestCase):
-    """
-    Integration tests for filtered list views.
-    """
+    urlpatterns = patterns('',
+        url(r'^(?P<pk>\d+)/$', FilterClassDetailView.as_view(), name='detail-view'),
+        url(r'^$', FilterClassRootView.as_view(), name='root-view'),
+    )
 
+
+class CommonFilteringTestCase(TestCase):
+    def _serialize_object(self, obj):
+        return {'id': obj.id, 'text': obj.text, 'decimal': obj.decimal, 'date': obj.date}
+    
     def setUp(self):
         """
         Create 10 FilterableItem instances.
@@ -65,10 +75,16 @@ class IntegrationTestFiltering(TestCase):
 
         self.objects = FilterableItem.objects
         self.data = [
-            {'id': obj.id, 'text': obj.text, 'decimal': obj.decimal, 'date': obj.date}
+            self._serialize_object(obj)
             for obj in self.objects.all()
         ]
 
+
+class IntegrationTestFiltering(CommonFilteringTestCase):
+    """
+    Integration tests for filtered list views.
+    """
+
     @unittest.skipUnless(django_filters, 'django-filters not installed')
     def test_get_filtered_fields_root_view(self):
         """
@@ -167,3 +183,50 @@ class IntegrationTestFiltering(TestCase):
         request = factory.get('/?integer=%s' % search_integer)
         response = view(request).render()
         self.assertEqual(response.status_code, status.HTTP_200_OK)
+
+
+class IntegrationTestDetailFiltering(CommonFilteringTestCase):
+    """
+    Integration tests for filtered detail views.
+    """
+    urls = 'rest_framework.tests.filterset'
+    
+    def _get_url(self, item):
+        return reverse('detail-view', kwargs=dict(pk=item.pk))
+
+    @unittest.skipUnless(django_filters, 'django-filters not installed')
+    def test_get_filtered_detail_view(self):
+        """
+        GET requests to filtered RetrieveAPIView that have a filter_class set
+        should return filtered results.
+        """
+        item = self.objects.all()[0]
+        data = self._serialize_object(item)
+
+        # Basic test with no filter.
+        response = self.client.get(self._get_url(item))
+        self.assertEqual(response.status_code, status.HTTP_200_OK)
+        self.assertEqual(response.data, data)
+
+        # Tests that the decimal filter set that should fail.
+        search_decimal = Decimal('4.25')
+        high_item = self.objects.filter(decimal__gt=search_decimal)[0]
+        response = self.client.get('{url}?decimal={param}'.format(url=self._get_url(high_item), param=search_decimal))
+        self.assertEqual(response.status_code, status.HTTP_404_NOT_FOUND)
+
+        # Tests that the decimal filter set that should succeed.
+        search_decimal = Decimal('4.25')
+        low_item = self.objects.filter(decimal__lt=search_decimal)[0]
+        low_item_data = self._serialize_object(low_item)
+        response = self.client.get('{url}?decimal={param}'.format(url=self._get_url(low_item), param=search_decimal))
+        self.assertEqual(response.status_code, status.HTTP_200_OK)
+        self.assertEqual(response.data, low_item_data)
+        
+        # Tests that multiple filters works.
+        search_decimal = Decimal('5.25')
+        search_date = datetime.date(2012, 10, 2)
+        valid_item = self.objects.filter(decimal__lt=search_decimal, date__gt=search_date)[0]
+        valid_item_data = self._serialize_object(valid_item)
+        response = self.client.get('{url}?decimal={decimal}&date={date}'.format(url=self._get_url(valid_item), decimal=search_decimal, date=search_date))
+        self.assertEqual(response.status_code, status.HTTP_200_OK)
+        self.assertEqual(response.data, valid_item_data)

rest_framework/tests/pagination.py

@@ -129,16 +129,6 @@ class IntegrationTestPaginationAndFiltering(TestCase):
         view = FilterFieldsRootView.as_view()
 
         EXPECTED_NUM_QUERIES = 2
-        if django.VERSION < (1, 4):
-            # On Django 1.3 we need to use django-filter 0.5.4
-            #
-            # The filter objects there don't expose a `.count()` method,
-            # which means we only make a single query *but* it's a single
-            # query across *all* of the queryset, instead of a COUNT and then
-            # a SELECT with a LIMIT.
-            #
-            # Although this is fewer queries, it's actually a regression.
-            EXPECTED_NUM_QUERIES = 1
 
         request = factory.get('/?decimal=15.20')
         with self.assertNumQueries(EXPECTED_NUM_QUERIES):

rest_framework/tests/serializer_bulk_update.py

@@ -98,7 +98,7 @@ class BulkCreateSerializerTests(TestCase):
         serializer = self.BookSerializer(data=data, many=True)
         self.assertEqual(serializer.is_valid(), False)
 
-        expected_errors = {'non_field_errors': ['Expected a list of items']}
+        expected_errors = {'non_field_errors': ['Expected a list of items.']}
 
         self.assertEqual(serializer.errors, expected_errors)
 
@@ -115,7 +115,7 @@ class BulkCreateSerializerTests(TestCase):
         serializer = self.BookSerializer(data=data, many=True)
         self.assertEqual(serializer.is_valid(), False)
 
-        expected_errors = {'non_field_errors': ['Expected a list of items']}
+        expected_errors = {'non_field_errors': ['Expected a list of items.']}
 
         self.assertEqual(serializer.errors, expected_errors)
 
@@ -206,6 +206,7 @@ class BulkUpdateSerializerTests(TestCase):
         self.assertEqual(serializer.data, data)
         serializer.save()
         new_data = self.BookSerializer(self.books(), many=True).data
+
         self.assertEqual(data, new_data)
 
     def test_bulk_update_and_create(self):
@@ -230,6 +231,29 @@ class BulkUpdateSerializerTests(TestCase):
         new_data = self.BookSerializer(self.books(), many=True).data
         self.assertEqual(data, new_data)
 
+    def test_bulk_update_invalid_create(self):
+        """
+        Bulk update serialization without allow_add_remove may not create items.
+        """
+        data = [
+            {
+                'id': 0,
+                'title': 'The electric kool-aid acid test',
+                'author': 'Tom Wolfe'
+            }, {
+                'id': 3,
+                'title': 'Kafka on the shore',
+                'author': 'Haruki Murakami'
+            }
+        ]
+        expected_errors = [
+            {},
+            {'non_field_errors': ['Cannot create a new item, only existing items may be updated.']}
+        ]
+        serializer = self.BookSerializer(self.books(), data=data, many=True)
+        self.assertEqual(serializer.is_valid(), False)
+        self.assertEqual(serializer.errors, expected_errors)
+
     def test_bulk_update_error(self):
         """
         Incorrect bulk update serialization should return error data.

rest_framework/views.py

@@ -3,7 +3,7 @@ Provides an APIView class that is used as the base of all class-based views.
 """
 from __future__ import unicode_literals
 from django.core.exceptions import PermissionDenied
-from django.http import Http404
+from django.http import Http404, HttpResponse
 from django.utils.html import escape
 from django.utils.safestring import mark_safe
 from django.views.decorators.csrf import csrf_exempt
@@ -327,6 +327,12 @@ class APIView(View):
         """
         Returns the final response object.
         """
+        # Make the error obvious if a proper response is not returned
+        assert isinstance(response, HttpResponse), (
+            'Expected a `Response` to be returned from the view, '
+            'but received a `%s`' % type(response)
+        )
+
         if isinstance(response, Response):
             if not getattr(request, 'accepted_renderer', None):
                 neg = self.perform_content_negotiation(request, force=True)