Relational field support in browseable API.

Add slug relational fields.
Add quickstart.
This commit is contained in:
Tom Christie 2012-11-01 23:04:13 +00:00
parent 027c9079f6
commit d327c5f531
11 changed files with 244 additions and 25 deletions

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@ -0,0 +1,19 @@
Metadata-Version: 1.0
Name: djangorestframework
Version: 2.0.0
Summary: A lightweight REST framework for Django.
Home-page: http://django-rest-framework.org
Author: Tom Christie
Author-email: tom@tomchristie.com
License: BSD
Download-URL: http://pypi.python.org/pypi/rest_framework/
Description: UNKNOWN
Platform: UNKNOWN
Classifier: Development Status :: 4 - Beta
Classifier: Environment :: Web Environment
Classifier: Framework :: Django
Classifier: Intended Audience :: Developers
Classifier: License :: OSI Approved :: BSD License
Classifier: Operating System :: OS Independent
Classifier: Programming Language :: Python
Classifier: Topic :: Internet :: WWW/HTTP

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@ -0,0 +1,86 @@
MANIFEST.in
setup.py
djangorestframework.egg-info/PKG-INFO
djangorestframework.egg-info/SOURCES.txt
djangorestframework.egg-info/dependency_links.txt
djangorestframework.egg-info/top_level.txt
rest_framework/__init__.py
rest_framework/authentication.py
rest_framework/compat.py
rest_framework/decorators.py
rest_framework/exceptions.py
rest_framework/fields.py
rest_framework/generics.py
rest_framework/mixins.py
rest_framework/models.py
rest_framework/negotiation.py
rest_framework/pagination.py
rest_framework/parsers.py
rest_framework/permissions.py
rest_framework/renderers.py
rest_framework/request.py
rest_framework/response.py
rest_framework/reverse.py
rest_framework/serializers.py
rest_framework/settings.py
rest_framework/status.py
rest_framework/throttling.py
rest_framework/urlpatterns.py
rest_framework/urls.py
rest_framework/views.py
rest_framework/authtoken/__init__.py
rest_framework/authtoken/models.py
rest_framework/authtoken/views.py
rest_framework/authtoken/migrations/0001_initial.py
rest_framework/authtoken/migrations/__init__.py
rest_framework/runtests/__init__.py
rest_framework/runtests/runcoverage.py
rest_framework/runtests/runtests.py
rest_framework/runtests/settings.py
rest_framework/runtests/urls.py
rest_framework/static/rest_framework/css/bootstrap-tweaks.css
rest_framework/static/rest_framework/css/bootstrap.min.css
rest_framework/static/rest_framework/css/default.css
rest_framework/static/rest_framework/css/prettify.css
rest_framework/static/rest_framework/img/glyphicons-halflings-white.png
rest_framework/static/rest_framework/img/glyphicons-halflings.png
rest_framework/static/rest_framework/img/grid.png
rest_framework/static/rest_framework/js/bootstrap.min.js
rest_framework/static/rest_framework/js/default.js
rest_framework/static/rest_framework/js/jquery-1.8.1-min.js
rest_framework/static/rest_framework/js/prettify-min.js
rest_framework/templates/rest_framework/api.html
rest_framework/templates/rest_framework/base.html
rest_framework/templates/rest_framework/login.html
rest_framework/templatetags/__init__.py
rest_framework/templatetags/rest_framework.py
rest_framework/tests/__init__.py
rest_framework/tests/authentication.py
rest_framework/tests/breadcrumbs.py
rest_framework/tests/decorators.py
rest_framework/tests/description.py
rest_framework/tests/files.py
rest_framework/tests/genericrelations.py
rest_framework/tests/generics.py
rest_framework/tests/htmlrenderer.py
rest_framework/tests/hyperlinkedserializers.py
rest_framework/tests/models.py
rest_framework/tests/modelviews.py
rest_framework/tests/negotiation.py
rest_framework/tests/pagination.py
rest_framework/tests/parsers.py
rest_framework/tests/renderers.py
rest_framework/tests/request.py
rest_framework/tests/response.py
rest_framework/tests/reverse.py
rest_framework/tests/serializer.py
rest_framework/tests/status.py
rest_framework/tests/testcases.py
rest_framework/tests/tests.py
rest_framework/tests/throttling.py
rest_framework/tests/validators.py
rest_framework/tests/views.py
rest_framework/utils/__init__.py
rest_framework/utils/breadcrumbs.py
rest_framework/utils/encoders.py
rest_framework/utils/mediatypes.py

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@ -0,0 +1 @@

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@ -0,0 +1,7 @@
rest_framework/authtoken
rest_framework/utils
rest_framework/tests
rest_framework/runtests
rest_framework/templatetags
rest_framework
rest_framework/authtoken/migrations

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@ -66,11 +66,9 @@ If you're intending to use the browseable API you'll want to add REST framework'
Note that the URL path can be whatever you want, but you must include `rest_framework.urls` with the `rest_framework` namespace. Note that the URL path can be whatever you want, but you must include `rest_framework.urls` with the `rest_framework` namespace.
<!--
## Quickstart ## Quickstart
Can't wait to get started? The [quickstart guide][quickstart] is the fastest way to get up and running with REST framework. Can't wait to get started? The [quickstart guide][quickstart] is the fastest way to get up and running with REST framework.
-->
## Tutorial ## Tutorial

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@ -53,7 +53,7 @@
<li class="dropdown"> <li class="dropdown">
<a href="#" class="dropdown-toggle" data-toggle="dropdown">Tutorial <b class="caret"></b></a> <a href="#" class="dropdown-toggle" data-toggle="dropdown">Tutorial <b class="caret"></b></a>
<ul class="dropdown-menu"> <ul class="dropdown-menu">
<!--<li><a href="{{ base_url }}/tutorial/quickstart{{ suffix }}">Quickstart</a></li>--> <li><a href="{{ base_url }}/tutorial/quickstart{{ suffix }}">Quickstart</a></li>
<li><a href="{{ base_url }}/tutorial/1-serialization{{ suffix }}">1 - Serialization</a></li> <li><a href="{{ base_url }}/tutorial/1-serialization{{ suffix }}">1 - Serialization</a></li>
<li><a href="{{ base_url }}/tutorial/2-requests-and-responses{{ suffix }}">2 - Requests and responses</a></li> <li><a href="{{ base_url }}/tutorial/2-requests-and-responses{{ suffix }}">2 - Requests and responses</a></li>
<li><a href="{{ base_url }}/tutorial/3-class-based-views{{ suffix }}">3 - Class based views</a></li> <li><a href="{{ base_url }}/tutorial/3-class-based-views{{ suffix }}">3 - Class based views</a></li>

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@ -19,12 +19,19 @@ First up we're going to define some serializers in `quickstart/serializers.py` t
class GroupSerializer(serializers.HyperlinkedModelSerializer): class GroupSerializer(serializers.HyperlinkedModelSerializer):
permissions = serializers.ManySlugRelatedField(
slug_field='codename',
queryset=Permission.objects.all()
)
class Meta: class Meta:
model = Group model = Group
fields = ('url', 'name', 'permissions') fields = ('url', 'name', 'permissions')
Notice that we're using hyperlinked relations in this case, with `HyperlinkedModelSerializer`. You can also use primary key and various other relationships, but hyperlinking is good RESTful design. Notice that we're using hyperlinked relations in this case, with `HyperlinkedModelSerializer`. You can also use primary key and various other relationships, but hyperlinking is good RESTful design.
We've also overridden the `permission` field on the `GroupSerializer`. In this case we don't want to use a hyperlinked representation, but instead use the list of permission codenames associated with the group, so we've used a `ManySlugRelatedField`, using the `codename` field for the representation.
## Views ## Views
Right, we'd better write some views then. Open `quickstart/views.py` and get typing. Right, we'd better write some views then. Open `quickstart/views.py` and get typing.
@ -152,7 +159,7 @@ We can now access our API, both from the command-line, using tools like `curl`..
}, },
{ {
"email": "tom@example.com", "email": "tom@example.com",
"groups": [], "groups": [ ],
"url": "http://127.0.0.1:8000/users/2/", "url": "http://127.0.0.1:8000/users/2/",
"username": "tom" "username": "tom"
} }

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@ -8,6 +8,7 @@ from django.core.exceptions import ObjectDoesNotExist, ValidationError
from django.core.urlresolvers import resolve, get_script_prefix from django.core.urlresolvers import resolve, get_script_prefix
from django.conf import settings from django.conf import settings
from django.forms import widgets from django.forms import widgets
from django.forms.models import ModelChoiceIterator
from django.utils.encoding import is_protected_type, smart_unicode from django.utils.encoding import is_protected_type, smart_unicode
from django.utils.translation import ugettext_lazy as _ from django.utils.translation import ugettext_lazy as _
from rest_framework.reverse import reverse from rest_framework.reverse import reverse
@ -232,11 +233,72 @@ class ModelField(WritableField):
class RelatedField(WritableField): class RelatedField(WritableField):
""" """
Base class for related model fields. Base class for related model fields.
If not overridden, this represents a to-one relatinship, using the unicode
representation of the target.
""" """
widget = widgets.Select
cache_choices = False
empty_label = None
def __init__(self, *args, **kwargs): def __init__(self, *args, **kwargs):
self.queryset = kwargs.pop('queryset', None) self.queryset = kwargs.pop('queryset', None)
super(RelatedField, self).__init__(*args, **kwargs) super(RelatedField, self).__init__(*args, **kwargs)
### We need this stuff to make form choices work...
# def __deepcopy__(self, memo):
# result = super(RelatedField, self).__deepcopy__(memo)
# result.queryset = result.queryset
# return result
def prepare_value(self, obj):
return self.to_native(obj)
def label_from_instance(self, obj):
"""
Return a readable representation for use with eg. select widgets.
"""
desc = smart_unicode(obj)
ident = self.to_native(obj)
if desc == ident:
return desc
return "%s - %s" % (desc, ident)
def _get_queryset(self):
return self._queryset
def _set_queryset(self, queryset):
self._queryset = queryset
self.widget.choices = self.choices
queryset = property(_get_queryset, _set_queryset)
def _get_choices(self):
# If self._choices is set, then somebody must have manually set
# the property self.choices. In this case, just return self._choices.
if hasattr(self, '_choices'):
return self._choices
# Otherwise, execute the QuerySet in self.queryset to determine the
# choices dynamically. Return a fresh ModelChoiceIterator that has not been
# consumed. Note that we're instantiating a new ModelChoiceIterator *each*
# time _get_choices() is called (and, thus, each time self.choices is
# accessed) so that we can ensure the QuerySet has not been consumed. This
# construct might look complicated but it allows for lazy evaluation of
# the queryset.
return ModelChoiceIterator(self)
def _set_choices(self, value):
# Setting choices also sets the choices on the widget.
# choices can be any iterable, but we call list() on it because
# it will be consumed more than once.
self._choices = self.widget.choices = list(value)
choices = property(_get_choices, _set_choices)
### Regular serializier stuff...
def field_to_native(self, obj, field_name): def field_to_native(self, obj, field_name):
value = getattr(obj, self.source or field_name) value = getattr(obj, self.source or field_name)
return self.to_native(value) return self.to_native(value)
@ -253,6 +315,8 @@ class ManyRelatedMixin(object):
""" """
Mixin to convert a related field to a many related field. Mixin to convert a related field to a many related field.
""" """
widget = widgets.SelectMultiple
def field_to_native(self, obj, field_name): def field_to_native(self, obj, field_name):
value = getattr(obj, self.source or field_name) value = getattr(obj, self.source or field_name)
return [self.to_native(item) for item in value.all()] return [self.to_native(item) for item in value.all()]
@ -276,6 +340,9 @@ class ManyRelatedMixin(object):
class ManyRelatedField(ManyRelatedMixin, RelatedField): class ManyRelatedField(ManyRelatedMixin, RelatedField):
""" """
Base class for related model managers. Base class for related model managers.
If not overridden, this represents a to-many relatinship, using the unicode
representations of the target, and is read-only.
""" """
pass pass
@ -284,7 +351,7 @@ class ManyRelatedField(ManyRelatedMixin, RelatedField):
class PrimaryKeyRelatedField(RelatedField): class PrimaryKeyRelatedField(RelatedField):
""" """
Serializes a related field or related object to a pk value. Represents a to-one relationship as a pk value.
""" """
def to_native(self, pk): def to_native(self, pk):
@ -313,7 +380,7 @@ class PrimaryKeyRelatedField(RelatedField):
class ManyPrimaryKeyRelatedField(ManyRelatedField): class ManyPrimaryKeyRelatedField(ManyRelatedField):
""" """
Serializes a to-many related field or related manager to a pk value. Represents a to-many relationship as a pk value.
""" """
def to_native(self, pk): def to_native(self, pk):
return pk return pk
@ -329,10 +396,36 @@ class ManyPrimaryKeyRelatedField(ManyRelatedField):
# Forward relationship # Forward relationship
return [self.to_native(item.pk) for item in queryset.all()] return [self.to_native(item.pk) for item in queryset.all()]
### Slug relationships
class SlugRelatedField(RelatedField):
def __init__(self, *args, **kwargs):
self.slug_field = kwargs.pop('slug_field', None)
assert self.slug_field, 'slug_field is required'
super(SlugRelatedField, self).__init__(*args, **kwargs)
def to_native(self, obj):
return getattr(obj, self.slug_field)
def from_native(self, data):
try:
return self.queryset.get(**{self.slug_field: data})
except ObjectDoesNotExist:
raise ValidationError('Object with %s=%s does not exist.' %
(self.slug_field, unicode(data)))
class ManySlugRelatedField(ManyRelatedMixin, SlugRelatedField):
pass
### Hyperlinked relationships ### Hyperlinked relationships
class HyperlinkedRelatedField(RelatedField): class HyperlinkedRelatedField(RelatedField):
"""
Represents a to-one relationship, using hyperlinking.
"""
pk_url_kwarg = 'pk' pk_url_kwarg = 'pk'
slug_url_kwarg = 'slug' slug_url_kwarg = 'slug'
slug_field = 'slug' slug_field = 'slug'
@ -417,16 +510,20 @@ class HyperlinkedRelatedField(RelatedField):
class ManyHyperlinkedRelatedField(ManyRelatedMixin, HyperlinkedRelatedField): class ManyHyperlinkedRelatedField(ManyRelatedMixin, HyperlinkedRelatedField):
"""
Represents a to-many relationship, using hyperlinking.
"""
pass pass
class HyperlinkedIdentityField(Field): class HyperlinkedIdentityField(Field):
""" """
A field that represents the model's identity using a hyperlink. Represents the instance, or a property on the instance, using hyperlinking.
""" """
def __init__(self, *args, **kwargs): def __init__(self, *args, **kwargs):
# TODO: Make this mandatory, and have the HyperlinkedModelSerializer # TODO: Make view_name mandatory, and have the
# set it on-the-fly # HyperlinkedModelSerializer set it on-the-fly
self.view_name = kwargs.pop('view_name', None) self.view_name = kwargs.pop('view_name', None)
self.format = kwargs.pop('format', None) self.format = kwargs.pop('format', None)
super(HyperlinkedIdentityField, self).__init__(*args, **kwargs) super(HyperlinkedIdentityField, self).__init__(*args, **kwargs)

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@ -282,10 +282,12 @@ class BrowsableAPIRenderer(BaseRenderer):
serializers.EmailField: forms.EmailField, serializers.EmailField: forms.EmailField,
serializers.CharField: forms.CharField, serializers.CharField: forms.CharField,
serializers.BooleanField: forms.BooleanField, serializers.BooleanField: forms.BooleanField,
serializers.PrimaryKeyRelatedField: forms.ModelChoiceField, serializers.PrimaryKeyRelatedField: forms.ChoiceField,
serializers.ManyPrimaryKeyRelatedField: forms.ModelMultipleChoiceField, serializers.ManyPrimaryKeyRelatedField: forms.MultipleChoiceField,
serializers.HyperlinkedRelatedField: forms.ModelChoiceField, serializers.SlugRelatedField: forms.ChoiceField,
serializers.ManyHyperlinkedRelatedField: forms.ModelMultipleChoiceField serializers.ManySlugRelatedField: forms.MultipleChoiceField,
serializers.HyperlinkedRelatedField: forms.ChoiceField,
serializers.ManyHyperlinkedRelatedField: forms.MultipleChoiceField
} }
fields = {} fields = {}
@ -296,19 +298,14 @@ class BrowsableAPIRenderer(BaseRenderer):
kwargs = {} kwargs = {}
kwargs['required'] = v.required kwargs['required'] = v.required
if getattr(v, 'queryset', None): #if getattr(v, 'queryset', None):
kwargs['queryset'] = v.queryset # kwargs['queryset'] = v.queryset
if getattr(v, 'choices', None) is not None:
kwargs['choices'] = v.choices
if getattr(v, 'widget', None): if getattr(v, 'widget', None):
widget = copy.deepcopy(v.widget) widget = copy.deepcopy(v.widget)
# If choices have friendly readable names,
# then add in the identities too
if getattr(widget, 'choices', None):
choices = widget.choices
if any([ident != desc for (ident, desc) in choices]):
choices = [(ident, "%s (%s)" % (desc, ident))
for (ident, desc) in choices]
widget.choices = choices
kwargs['widget'] = widget kwargs['widget'] = widget
if getattr(v, 'default', None) is not None: if getattr(v, 'default', None) is not None:

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@ -36,6 +36,13 @@ ul.breadcrumb {
margin: 58px 0 0 0; margin: 58px 0 0 0;
} }
form select, form input {
width: 90%;
}
form select[multiple] {
height: 150px;
}
/* To allow tooltips to work on disabled elements */ /* To allow tooltips to work on disabled elements */
.disabled-tooltip-shield { .disabled-tooltip-shield {
position: absolute; position: absolute;

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@ -134,7 +134,7 @@
<div class="control-group {% if field.errors %}error{% endif %}"> <div class="control-group {% if field.errors %}error{% endif %}">
{{ field.label_tag|add_class:"control-label" }} {{ field.label_tag|add_class:"control-label" }}
<div class="controls"> <div class="controls">
{{ field|add_class:"input-xlarge" }} {{ field }}
<span class="help-inline">{{ field.help_text }}</span> <span class="help-inline">{{ field.help_text }}</span>
{{ field.errors|add_class:"help-block" }} {{ field.errors|add_class:"help-block" }}
</div> </div>
@ -159,7 +159,7 @@
<div class="control-group {% if field.errors %}error{% endif %}"> <div class="control-group {% if field.errors %}error{% endif %}">
{{ field.label_tag|add_class:"control-label" }} {{ field.label_tag|add_class:"control-label" }}
<div class="controls"> <div class="controls">
{{ field|add_class:"input-xlarge" }} {{ field }}
<span class='help-inline'>{{ field.help_text }}</span> <span class='help-inline'>{{ field.help_text }}</span>
{{ field.errors|add_class:"help-block" }} {{ field.errors|add_class:"help-block" }}
</div> </div>