diff options
Diffstat (limited to 'docs')
| -rw-r--r-- | docs/api-guide/fields.md | 49 | ||||
| -rw-r--r-- | docs/api-guide/serializers.md | 21 | ||||
| -rw-r--r-- | docs/index.md | 4 | ||||
| -rw-r--r-- | docs/topics/2.3-announcement.md | 6 | ||||
| -rw-r--r-- | docs/topics/contributing.md | 1 | ||||
| -rw-r--r-- | docs/topics/release-notes.md | 4 | ||||
| -rw-r--r-- | docs/topics/third-party-resources.md | 2 | ||||
| -rw-r--r-- | docs/tutorial/6-viewsets-and-routers.md | 4 | ||||
| -rw-r--r-- | docs/tutorial/quickstart.md | 2 |
9 files changed, 77 insertions, 16 deletions
diff --git a/docs/api-guide/fields.md b/docs/api-guide/fields.md index 391a52e5..aa5cc84e 100644 --- a/docs/api-guide/fields.md +++ b/docs/api-guide/fields.md @@ -453,7 +453,7 @@ If you want to create a custom field, you'll need to subclass `Field` and then o The `.to_representation()` method is called to convert the initial datatype into a primitive, serializable datatype. -The `to_internal_value()` method is called to restore a primitive datatype into its internal python representation. +The `to_internal_value()` method is called to restore a primitive datatype into its internal python representation. This method should raise a `serializer.ValidationError` if the data is invalid. Note that the `WritableField` class that was present in version 2.x no longer exists. You should subclass `Field` and override `to_internal_value()` if the field supports data input. @@ -498,6 +498,53 @@ As an example, let's create a field that can be used represent the class name of """ return obj.__class__.__name__ +#### Raising validation errors + +Our `ColorField` class above currently does not perform any data validation. +To indicate invalid data, we should raise a `serializers.ValidationError`, like so: + + def to_internal_value(self, data): + if not isinstance(data, six.text_type): + msg = 'Incorrect type. Expected a string, but got %s' + raise ValidationError(msg % type(data).__name__) + + if not re.match(r'^rgb\([0-9]+,[0-9]+,[0-9]+\)$', data): + raise ValidationError('Incorrect format. Expected `rgb(#,#,#)`.') + + data = data.strip('rgb(').rstrip(')') + red, green, blue = [int(col) for col in data.split(',')] + + if any([col > 255 or col < 0 for col in (red, green, blue)]): + raise ValidationError('Value out of range. Must be between 0 and 255.') + + return Color(red, green, blue) + +The `.fail()` method is a shortcut for raising `ValidationError` that takes a message string from the `error_messages` dictionary. For example: + + default_error_messages = { + 'incorrect_type': 'Incorrect type. Expected a string, but got {input_type}', + 'incorrect_format': 'Incorrect format. Expected `rgb(#,#,#)`.', + 'out_of_range': 'Value out of range. Must be between 0 and 255.' + } + + def to_internal_value(self, data): + if not isinstance(data, six.text_type): + msg = 'Incorrect type. Expected a string, but got %s' + self.fail('incorrect_type', input_type=type(data).__name__) + + if not re.match(r'^rgb\([0-9]+,[0-9]+,[0-9]+\)$', data): + self.fail('incorrect_format') + + data = data.strip('rgb(').rstrip(')') + red, green, blue = [int(col) for col in data.split(',')] + + if any([col > 255 or col < 0 for col in (red, green, blue)]): + self.fail('out_of_range') + + return Color(red, green, blue) + +This style keeps you error messages more cleanly separated from your code, and should be preferred. + # Third party packages The following third party packages are also available. diff --git a/docs/api-guide/serializers.md b/docs/api-guide/serializers.md index 0ee80d53..1779c863 100644 --- a/docs/api-guide/serializers.md +++ b/docs/api-guide/serializers.md @@ -96,7 +96,7 @@ If we want to be able to return complete object instances based on the validated If your object instances correspond to Django models you'll also want to ensure that these methods save the object to the database. For example, if `Comment` was a Django model, the methods might look like this: def create(self, validated_data): - return Comment.objcts.create(**validated_data) + return Comment.objects.create(**validated_data) def update(self, instance, validated_data): instance.email = validated_data.get('email', instance.email) @@ -567,13 +567,13 @@ There needs to be a way of determining which views should be used for hyperlinki By default hyperlinks are expected to correspond to a view name that matches the style `'{model_name}-detail'`, and looks up the instance by a `pk` keyword argument. -You can override a URL field view name and lookup field by using either, or both of, the `view_name` and `lookup_field` options in the `extra_field_kwargs` setting, like so: +You can override a URL field view name and lookup field by using either, or both of, the `view_name` and `lookup_field` options in the `extra_kwargs` setting, like so: class AccountSerializer(serializers.HyperlinkedModelSerializer): class Meta: model = Account fields = ('account_url', 'account_name', 'users', 'created') - extra_field_kwargs = { + extra_kwargs = { 'url': {'view_name': 'accounts', 'lookup_field': 'account_name'} 'users': {'lookup_field': 'username'} } @@ -689,6 +689,21 @@ Here's an example of how you might choose to implement multiple updates: It is possible that a third party package may be included alongside the 3.1 release that provides some automatic support for multiple update operations, similar to the `allow_add_remove` behavior that was present in REST framework 2. +#### Customizing ListSerializer initialization + +When a serializer with `many=True` is instantiated, we need to determine which arguments and keyword arguments should be passed to the `.__init__()` method for both the child `Serializer` class, and for the parent `ListSerializer` class. + +The default implementation is to pass all arguments to both classes, except for `validators`, and any custom keyword arguments, both of which are assumed to be intended for the child serializer class. + +Occasionally you might need to explicitly specify how the child and parent classes should be instantiated when `many=True` is passed. You can do so by using the `many_init` class method. + + @classmethod + def many_init(cls, *args, **kwargs): + # Instantiate the child serializer. + kwargs['child'] = cls() + # Instantiate the parent list serializer. + return CustomListSerializer(*args, **kwargs) + --- # BaseSerializer diff --git a/docs/index.md b/docs/index.md index 7631be1e..e0ba2332 100644 --- a/docs/index.md +++ b/docs/index.md @@ -33,7 +33,7 @@ Django REST framework is a powerful and flexible toolkit that makes it easy to b Some reasons you might want to use REST framework: -* The [Web browseable API][sandbox] is a huge usability win for your developers. +* The [Web browsable API][sandbox] is a huge usability win for your developers. * [Authentication policies][authentication] including [OAuth1a][oauth1-section] and [OAuth2][oauth2-section] out of the box. * [Serialization][serializers] that supports both [ORM][modelserializer-section] and [non-ORM][serializer-section] data sources. * Customizable all the way down - just use [regular function-based views][functionview-section] if you don't need the [more][generic-views] [powerful][viewsets] [features][routers]. @@ -134,7 +134,7 @@ Here's our project's root `urls.py` module: router.register(r'users', UserViewSet) # Wire up our API using automatic URL routing. - # Additionally, we include login URLs for the browseable API. + # Additionally, we include login URLs for the browsable API. urlpatterns = [ url(r'^', include(router.urls)), url(r'^api-auth/', include('rest_framework.urls', namespace='rest_framework')) diff --git a/docs/topics/2.3-announcement.md b/docs/topics/2.3-announcement.md index 9c9f3e9f..66e46865 100644 --- a/docs/topics/2.3-announcement.md +++ b/docs/topics/2.3-announcement.md @@ -35,7 +35,7 @@ As an example of just how simple REST framework APIs can now be, here's an API w # Wire up our API using automatic URL routing. - # Additionally, we include login URLs for the browseable API. + # Additionally, we include login URLs for the browsable API. urlpatterns = [ url(r'^', include(router.urls)), url(r'^api-auth/', include('rest_framework.urls', namespace='rest_framework')) @@ -207,9 +207,9 @@ The old-style signature will continue to function but will raise a `PendingDepre ## View names and descriptions -The mechanics of how the names and descriptions used in the browseable API are generated has been modified and cleaned up somewhat. +The mechanics of how the names and descriptions used in the browsable API are generated has been modified and cleaned up somewhat. -If you've been customizing this behavior, for example perhaps to use `rst` markup for the browseable API, then you'll need to take a look at the implementation to see what updates you need to make. +If you've been customizing this behavior, for example perhaps to use `rst` markup for the browsable API, then you'll need to take a look at the implementation to see what updates you need to make. Note that the relevant methods have always been private APIs, and the docstrings called them out as intended to be deprecated. diff --git a/docs/topics/contributing.md b/docs/topics/contributing.md index 99f4fc3c..c9626ebf 100644 --- a/docs/topics/contributing.md +++ b/docs/topics/contributing.md @@ -62,7 +62,6 @@ To run the tests, clone the repository, and then: virtualenv env source env/bin/activate pip install -r requirements.txt - pip install -r requirements-test.txt # Run the tests ./runtests.py diff --git a/docs/topics/release-notes.md b/docs/topics/release-notes.md index 53187589..19dfbb98 100644 --- a/docs/topics/release-notes.md +++ b/docs/topics/release-notes.md @@ -121,7 +121,7 @@ You can determine your currently installed version using `pip freeze`: * Add `UnicodeYAMLRenderer` that extends `YAMLRenderer` with unicode. * Fix `parse_header` argument convertion. * Fix mediatype detection under Python 3. -* Web browseable API now offers blank option on dropdown when the field is not required. +* Web browsable API now offers blank option on dropdown when the field is not required. * `APIException` representation improved for logging purposes. * Allow source="*" within nested serializers. * Better support for custom oauth2 provider backends. @@ -200,7 +200,7 @@ You can determine your currently installed version using `pip freeze`: * Added `MAX_PAGINATE_BY` setting and `max_paginate_by` generic view attribute. * Added `cache` attribute to throttles to allow overriding of default cache. * 'Raw data' tab in browsable API now contains pre-populated data. -* 'Raw data' and 'HTML form' tab preference in browseable API now saved between page views. +* 'Raw data' and 'HTML form' tab preference in browsable API now saved between page views. * Bugfix: `required=True` argument fixed for boolean serializer fields. * Bugfix: `client.force_authenticate(None)` should also clear session info if it exists. * Bugfix: Client sending empty string instead of file now clears `FileField`. diff --git a/docs/topics/third-party-resources.md b/docs/topics/third-party-resources.md index efa0b91f..0358d614 100644 --- a/docs/topics/third-party-resources.md +++ b/docs/topics/third-party-resources.md @@ -93,7 +93,7 @@ The cookiecutter template includes a `runtests.py` which uses the `pytest` packa Before running, you'll need to install a couple test requirements. - $ pip install -r requirements-test.txt + $ pip install -r requirements.txt Once requirements installed, you can run `runtests.py`. diff --git a/docs/tutorial/6-viewsets-and-routers.md b/docs/tutorial/6-viewsets-and-routers.md index 3fad509a..816e9da6 100644 --- a/docs/tutorial/6-viewsets-and-routers.md +++ b/docs/tutorial/6-viewsets-and-routers.md @@ -112,7 +112,7 @@ Here's our re-wired `urls.py` file. router.register(r'users', views.UserViewSet) # The API URLs are now determined automatically by the router. - # Additionally, we include the login URLs for the browseable API. + # Additionally, we include the login URLs for the browsable API. urlpatterns = [ url(r'^', include(router.urls)), url(r'^api-auth/', include('rest_framework.urls', namespace='rest_framework')) @@ -130,7 +130,7 @@ That doesn't mean it's always the right approach to take. There's a similar set ## Reviewing our work -With an incredibly small amount of code, we've now got a complete pastebin Web API, which is fully web browseable, and comes complete with authentication, per-object permissions, and multiple renderer formats. +With an incredibly small amount of code, we've now got a complete pastebin Web API, which is fully web browsable, and comes complete with authentication, per-object permissions, and multiple renderer formats. We've walked through each step of the design process, and seen how if we need to customize anything we can gradually work our way down to simply using regular Django views. diff --git a/docs/tutorial/quickstart.md b/docs/tutorial/quickstart.md index 1c398c1f..3e1ce0a9 100644 --- a/docs/tutorial/quickstart.md +++ b/docs/tutorial/quickstart.md @@ -100,7 +100,7 @@ Okay, now let's wire up the API URLs. On to `tutorial/urls.py`... router.register(r'groups', views.GroupViewSet) # Wire up our API using automatic URL routing. - # Additionally, we include login URLs for the browseable API. + # Additionally, we include login URLs for the browsable API. urlpatterns = [ url(r'^', include(router.urls)), url(r'^api-auth/', include('rest_framework.urls', namespace='rest_framework')) |