Added support for OPTIONS method, including a few unit tests

djangorestframework/mixins.py

@@ -452,7 +452,10 @@ class ResourceMixin(object):
         return self._resource.filter_response(obj)
 
     def get_bound_form(self, content=None, method=None):
+        if hasattr(self._resource, 'get_bound_form'):
             return self._resource.get_bound_form(content, method=method)
+        else:
+            return None
 
 
 
@@ -566,7 +569,7 @@ class UpdateModelMixin(object):
         # TODO: update on the url of a non-existing resource url doesn't work correctly at the moment - will end up with a new url 
         try:
             if args:
-                # If we have any none kwargs then assume the last represents the primrary key
+                # If we have any none kwargs then assume the last represents the primary key
                 self.model_instance = model.objects.get(pk=args[-1], **kwargs)
             else:
                 # Otherwise assume the kwargs uniquely identify the model

djangorestframework/tests/views.py

@@ -1,17 +1,109 @@
 from django.conf.urls.defaults import patterns, url
 from django.test import TestCase
 from django.test import Client
+from django import forms
+from django.db import models
 
+from djangorestframework.views import View
+from djangorestframework.parsers import JSONParser
+from djangorestframework.resources import ModelResource
+from djangorestframework.views import ListOrCreateModelView, InstanceModelView
+
+from StringIO import StringIO
+
+
+class MockView(View):
+    """This is a basic mock view"""
+    pass
+
+class ResourceMockView(View):
+    """This is a resource-based mock view"""
+
+    class MockForm(forms.Form):
+        foo = forms.BooleanField(required=False)
+        bar = forms.IntegerField(help_text='Must be an integer.')
+        baz = forms.CharField(max_length=32)
+        
+    form = MockForm
+
+class MockResource(ModelResource):
+    """This is a mock model-based resource"""
+    
+    class MockResourceModel(models.Model):
+        foo = models.BooleanField()
+        bar = models.IntegerField(help_text='Must be an integer.')
+        baz = models.CharField(max_length=32, help_text='Free text.  Max length 32 chars.')
+        
+    model = MockResourceModel
+    fields = ('foo', 'bar', 'baz')
 
 urlpatterns = patterns('djangorestframework.utils.staticviews',
     url(r'^robots.txt$', 'deny_robots'),
     url(r'^favicon.ico$', 'favicon'),
     url(r'^accounts/login$', 'api_login'),
     url(r'^accounts/logout$', 'api_logout'),
+    url(r'^mock/$', MockView.as_view()),
+    url(r'^resourcemock/$', ResourceMockView.as_view()),
+    url(r'^model/$', ListOrCreateModelView.as_view(resource=MockResource)),
+    url(r'^model/(?P<pk>[^/]+)/$', InstanceModelView.as_view(resource=MockResource)),
 )
 
+class BaseViewTests(TestCase):
+    """Test the base view class of djangorestframework"""
+    urls = 'djangorestframework.tests.views'  
     
-class ViewTests(TestCase):
+    def test_options_method_simple_view(self):
+        response = self.client.options('/mock/')
+        self._verify_options_response(response, 
+                                      name='Mock', 
+                                      description='This is a basic mock view')
+        
+    def test_options_method_resource_view(self):
+        response = self.client.options('/resourcemock/')
+        self._verify_options_response(response, 
+                                      name='Resource Mock', 
+                                      description='This is a resource-based mock view', 
+                                      fields={'foo':'BooleanField', 
+                                              'bar':'IntegerField', 
+                                              'baz':'CharField', 
+                                              })
+        
+    def test_options_method_model_resource_list_view(self):
+        response = self.client.options('/model/')
+        self._verify_options_response(response, 
+                                      name='Mock List', 
+                                      description='This is a mock model-based resource', 
+                                      fields={'foo':'BooleanField', 
+                                              'bar':'IntegerField', 
+                                              'baz':'CharField', 
+                                              })
+
+    def test_options_method_model_resource_detail_view(self):
+        response = self.client.options('/model/0/')
+        self._verify_options_response(response, 
+                                      name='Mock Instance', 
+                                      description='This is a mock model-based resource', 
+                                      fields={'foo':'BooleanField', 
+                                              'bar':'IntegerField', 
+                                              'baz':'CharField', 
+                                              })
+
+    def _verify_options_response(self, response, name, description, fields=None, status=200, 
+                                 mime_type='application/json'):
+        self.assertEqual(response.status_code, status)
+        self.assertEqual(response['Content-Type'].split(';')[0], mime_type)
+        parser = JSONParser(None)
+        (data, files) = parser.parse(StringIO(response.content))
+        self.assertTrue('application/json' in data['renders']) 
+        self.assertEqual(name, data['name']) 
+        self.assertEqual(description, data['description']) 
+        if fields is None:
+            self.assertFalse(hasattr(data, 'fields'))
+        else:
+            self.assertEqual(data['fields'], fields) 
+
+
+class ExtraViewsTests(TestCase):
     """Test the extra views djangorestframework provides"""
     urls = 'djangorestframework.tests.views'  
 
@@ -39,5 +131,5 @@ class ViewTests(TestCase):
         self.assertEqual(response.status_code, 200)
         self.assertEqual(response['Content-Type'].split(';')[0], 'text/html')
 
-    
     # TODO: Add login/logout behaviour tests
+

djangorestframework/views.py

@@ -13,6 +13,7 @@ from djangorestframework.compat import View as DjangoView
 from djangorestframework.response import Response, ErrorResponse
 from djangorestframework.mixins import *
 from djangorestframework import resources, renderers, parsers, authentication, permissions, status
+from djangorestframework.utils.description import get_name, get_description
 
 
 __all__ = (
@@ -140,6 +141,11 @@ class View(ResourceMixin, RequestMixin, ResponseMixin, AuthMixin, DjangoView):
             else:
                 response = Response(status.HTTP_204_NO_CONTENT)
 
+            if request.method == 'OPTIONS':
+                # do not filter the response for HTTP OPTIONS, else the response fields are lost,
+                # as they do not correspond with model fields
+                response.cleaned_content = response.raw_content
+            else:
                 # Pre-serialize filtering (eg filter complex objects into natively serializable types)
                 response.cleaned_content = self.filter_response(response.raw_content)
     
@@ -159,6 +165,22 @@ class View(ResourceMixin, RequestMixin, ResponseMixin, AuthMixin, DjangoView):
         return self.render(response)
 
 
+    def options(self, request, *args,  **kwargs):
+        response_obj = {
+            'name' : get_name(self), 
+            'description' : get_description(self), 
+            'renders': self._rendered_media_types,
+            'parses': self._parsed_media_types,
+        }
+        form = self.get_bound_form()
+        if form is not None:
+            field_name_types = {}
+            for name, field in form.fields.iteritems():
+                field_name_types[name] = field.__class__.__name__
+            response_obj['fields'] = field_name_types
+        return response_obj
+
+
 class ModelView(View):
     """
     A RESTful view that maps to a model in the database.