Deal with List/Instance suffixes for viewsets

docs/api-guide/routers.md

@@ -15,15 +15,15 @@ REST framework adds support for automatic URL routing to Django, and provides yo
 Here's an example of a simple URL conf, that uses `DefaultRouter`.
 
     router = routers.SimpleRouter()
-    router.register(r'users', UserViewSet, 'user')
-    router.register(r'accounts', AccountViewSet, 'account')
+    router.register(r'users', UserViewSet, name='user')
+    router.register(r'accounts', AccountViewSet, name='account')
     urlpatterns = router.urls
 
 There are three arguments to the `register()` method:
 
 * `prefix` - The URL prefix to use for this set of routes.
 * `viewset` - The viewset class.
-* `basename` - The base to use for the URL names that are created.
+* `name` - The base to use for the URL names that are created.
 
 The example above would generate the following URL patterns:
 

docs/api-guide/viewsets.md

@@ -42,7 +42,7 @@ If we need to, we can bind this viewset into two seperate views, like so:
 Typically we wouldn't do this, but would instead register the viewset with a router, and allow the urlconf to be automatically generated.
 
     router = DefaultRouter()
-    router.register(r'users', UserViewSet, 'user')
+    router.register(r'users', UserViewSet, name='user')
     urlpatterns = router.urls
 
 Rather than writing your own viewsets, you'll often want to use the existing base classes that provide a default set of behavior.  For example:

docs/tutorial/6-viewsets-and-routers.md

@@ -105,8 +105,8 @@ Here's our re-wired `urls.py` file.
 
     # Create a router and register our viewsets with it.
     router = DefaultRouter()
-    router.register(r'snippets', views.SnippetViewSet, 'snippet')
-    router.register(r'users', views.UserViewSet, 'user')
+    router.register(r'snippets', views.SnippetViewSet, name='snippet')
+    router.register(r'users', views.UserViewSet, name='user')
     
     # The API URLs are now determined automatically by the router.
     # Additionally, we include the login URLs for the browseable API.

rest_framework/renderers.py

@@ -439,7 +439,7 @@ class BrowsableAPIRenderer(BaseRenderer):
         return GenericContentForm()
 
     def get_name(self, view):
-        return get_view_name(view.__class__)
+        return get_view_name(view.__class__, getattr(view, 'suffix', None))
 
     def get_description(self, view):
         return get_view_description(view.__class__, html=True)

rest_framework/routers.py

@@ -13,6 +13,7 @@ For example, you might have a `urls.py` that looks something like this:
 
     urlpatterns = router.urls
 """
+from collections import namedtuple
 from django.conf.urls import url, patterns
 from django.db import models
 from rest_framework.decorators import api_view
@@ -22,6 +23,9 @@ from rest_framework.viewsets import ModelViewSet
 from rest_framework.urlpatterns import format_suffix_patterns
 
 
+Route = namedtuple('Route', ['url', 'mapping', 'name', 'initkwargs'])
+
+
 def replace_methodname(format_string, methodname):
     """
     Partially format a format_string, swapping out any
@@ -38,8 +42,8 @@ class BaseRouter(object):
     def __init__(self):
         self.registry = []
 
-    def register(self, prefix, viewset, basename):
-        self.registry.append((prefix, viewset, basename))
+    def register(self, prefix, viewset, name):
+        self.registry.append((prefix, viewset, name))
 
     def get_urls(self):
         raise NotImplemented('get_urls must be overridden')
@@ -54,33 +58,36 @@ class BaseRouter(object):
 class SimpleRouter(BaseRouter):
     routes = [
         # List route.
-        (
-            r'^{prefix}/$',
-            {
+        Route(
+            url=r'^{prefix}/$',
+            mapping={
                 'get': 'list',
                 'post': 'create'
             },
-            '{basename}-list'
+            name='{basename}-list',
+            initkwargs={'suffix': 'List'}
         ),
         # Detail route.
-        (
-            r'^{prefix}/{lookup}/$',
-            {
+        Route(
+            url=r'^{prefix}/{lookup}/$',
+            mapping={
                 'get': 'retrieve',
                 'put': 'update',
                 'patch': 'partial_update',
                 'delete': 'destroy'
             },
-            '{basename}-detail'
+            name='{basename}-detail',
+            initkwargs={'suffix': 'Instance'}
         ),
         # Dynamically generated routes.
         # Generated using @action or @link decorators on methods of the viewset.
-        (
-            r'^{prefix}/{lookup}/{methodname}/$',
-            {
+        Route(
+            url=r'^{prefix}/{lookup}/{methodname}/$',
+            mapping={
                 '{httpmethod}': '{methodname}',
             },
-            '{basename}-{methodnamehyphen}'
+            name='{basename}-{methodnamehyphen}',
+            initkwargs={}
         ),
     ]
 
@@ -88,8 +95,7 @@ class SimpleRouter(BaseRouter):
         """
         Augment `self.routes` with any dynamically generated routes.
 
-        Returns a list of 4-tuples, of the form:
-        `(url_format, method_map, name_format, extra_kwargs)`
+        Returns a list of the Route namedtuple.
         """
 
         # Determine any `@action` or `@link` decorated methods on the viewset
@@ -101,21 +107,21 @@ class SimpleRouter(BaseRouter):
                 dynamic_routes[httpmethod] = methodname
 
         ret = []
-        for url_format, method_map, name_format in self.routes:
-            if method_map == {'{httpmethod}': '{methodname}'}:
+        for route in self.routes:
+            if route.mapping == {'{httpmethod}': '{methodname}'}:
                 # Dynamic routes (@link or @action decorator)
                 for httpmethod, methodname in dynamic_routes.items():
-                    extra_kwargs = getattr(viewset, methodname).kwargs
-                    ret.append((
-                        replace_methodname(url_format, methodname),
-                        {httpmethod: methodname},
-                        replace_methodname(name_format, methodname),
-                        extra_kwargs
+                    initkwargs = route.initkwargs.copy()
+                    initkwargs.update(getattr(viewset, methodname).kwargs)
+                    ret.append(Route(
+                        url=replace_methodname(route.url, methodname),
+                        mapping={httpmethod: methodname},
+                        name=replace_methodname(route.name, methodname),
+                        initkwargs=initkwargs,
                     ))
             else:
                 # Standard route
-                extra_kwargs = {}
-                ret.append((url_format, method_map, name_format, extra_kwargs))
+                ret.append(route)
 
         return ret
 
@@ -150,17 +156,17 @@ class SimpleRouter(BaseRouter):
             lookup = self.get_lookup_regex(viewset)
             routes = self.get_routes(viewset)
 
-            for url_format, method_map, name_format, extra_kwargs in routes:
+            for route in routes:
 
                 # Only actions which actually exist on the viewset will be bound
-                method_map = self.get_method_map(viewset, method_map)
-                if not method_map:
+                mapping = self.get_method_map(viewset, route.mapping)
+                if not mapping:
                     continue
 
                 # Build the url pattern
-                regex = url_format.format(prefix=prefix, lookup=lookup)
-                view = viewset.as_view(method_map, **extra_kwargs)
-                name = name_format.format(basename=basename)
+                regex = route.url.format(prefix=prefix, lookup=lookup)
+                view = viewset.as_view(mapping, **route.initkwargs)
+                name = route.name.format(basename=basename)
                 ret.append(url(regex, view, name=name))
 
         return ret
@@ -179,7 +185,7 @@ class DefaultRouter(SimpleRouter):
         Return a view to use as the API root.
         """
         api_root_dict = {}
-        list_name = self.routes[0][-1]
+        list_name = self.routes[0].name
         for prefix, viewset, basename in self.registry:
             api_root_dict[prefix] = list_name.format(basename=basename)
 

rest_framework/utils/breadcrumbs.py

@@ -21,7 +21,8 @@ def get_breadcrumbs(url):
                 # Don't list the same view twice in a row.
                 # Probably an optional trailing slash.
                 if not seen or seen[-1] != view:
-                    breadcrumbs_list.insert(0, (get_view_name(view.cls), prefix + url))
+                    suffix = getattr(view, 'suffix', None)
+                    breadcrumbs_list.insert(0, (get_view_name(view.cls, suffix), prefix + url))
                     seen.append(view)
 
         if url == '':

rest_framework/utils/formatting.py

@@ -45,14 +45,17 @@ def _camelcase_to_spaces(content):
     return ' '.join(content.split('_')).title()
 
 
-def get_view_name(cls):
+def get_view_name(cls, suffix=None):
     """
     Return a formatted name for an `APIView` class or `@api_view` function.
     """
     name = cls.__name__
     name = _remove_trailing_string(name, 'View')
     name = _remove_trailing_string(name, 'ViewSet')
-    return _camelcase_to_spaces(name)
+    name = _camelcase_to_spaces(name)
+    if suffix:
+        name += ' ' + suffix
+    return name
 
 
 def get_view_description(cls, html=False):

rest_framework/viewsets.py

@@ -35,12 +35,16 @@ class ViewSetMixin(object):
     """
 
     @classonlymethod
-    def as_view(cls, actions=None, name_suffix=None, **initkwargs):
+    def as_view(cls, actions=None, **initkwargs):
         """
         Because of the way class based views create a closure around the
         instantiated view, we need to totally reimplement `.as_view`,
         and slightly modify the view function that is created and returned.
         """
+        # The suffix initkwarg is reserved for identifing the viewset type
+        # eg. 'List' or 'Instance'.
+        cls.suffix = None
+
         # sanitize keyword arguments
         for key in initkwargs:
             if key in cls.http_method_names:
@@ -74,7 +78,11 @@ class ViewSetMixin(object):
         # like csrf_exempt from dispatch
         update_wrapper(view, cls.dispatch, assigned=())
 
+        # We need to set these on the view function, so that breadcrumb
+        # generation can pick out these bits of information from a
+        # resolved URL.
         view.cls = cls
+        view.suffix = initkwargs.get('suffix', None)
         return view