Add notes on 'method' argument to '@action' decorator

docs/api-guide/viewsets.md

@@ -126,6 +126,11 @@ The `@action` and `@link` decorators can additionally take extra arguments that
         def set_password(self, request, pk=None):
            ...
 
+The `@action` decorator will route `POST` requests by default, but may also accept other HTTP methods, by using the `method` argument.  For example:
+
+        @action(methods=['POST', 'DELETE'])
+        def unset_password(self, request, pk=None):
+           ...
 ---
 
 # API Reference

docs/topics/release-notes.md

@@ -44,6 +44,7 @@ You can determine your currently installed version using `pip freeze`:
 
 * Added `get_url` hook to `HyperlinkedIdentityField`.
 * Serializer field `default` argument may be a callable.
+* `@action` decorator now accepts a `methods` argument.
 * Bugfix: The `lookup_field` option on `HyperlinkedIdentityField` should apply by default to the url field on the serializer.
 * Bugfix: `HyperlinkedIdentityField` should continue to support `pk_url_kwarg`, `slug_url_kwarg`, `slug_field`, in a pending deprecation state.
 * Bugfix: Ensure we always return 404 instead of 500 if a lookup field cannot be converted to the correct lookup type.  (Eg non-numeric `AutoInteger` pk lookup)

rest_framework/decorators.py

@@ -112,18 +112,18 @@ def link(**kwargs):
     Used to mark a method on a ViewSet that should be routed for GET requests.
     """
     def decorator(func):
-        func.bind_to_method = 'get'
+        func.bind_to_methods = ['get']
         func.kwargs = kwargs
         return func
     return decorator
 
 
-def action(**kwargs):
+def action(methods=['post'], **kwargs):
     """
     Used to mark a method on a ViewSet that should be routed for POST requests.
     """
     def decorator(func):
-        func.bind_to_method = 'post'
+        func.bind_to_methods = methods
         func.kwargs = kwargs
         return func
     return decorator

rest_framework/routers.py

@@ -131,20 +131,20 @@ class SimpleRouter(BaseRouter):
         dynamic_routes = []
         for methodname in dir(viewset):
             attr = getattr(viewset, methodname)
-            httpmethod = getattr(attr, 'bind_to_method', None)
+            httpmethods = getattr(attr, 'bind_to_methods', None)
-            if httpmethod:
+            if httpmethods:
-                dynamic_routes.append((httpmethod, methodname))
+                dynamic_routes.append((httpmethods, methodname))
 
         ret = []
         for route in self.routes:
             if route.mapping == {'{httpmethod}': '{methodname}'}:
                 # Dynamic routes (@link or @action decorator)
-                for httpmethod, methodname in dynamic_routes:
+                for httpmethods, methodname in dynamic_routes:
                     initkwargs = route.initkwargs.copy()
                     initkwargs.update(getattr(viewset, methodname).kwargs)
                     ret.append(Route(
                         url=replace_methodname(route.url, methodname),
-                        mapping={httpmethod: methodname},
+                        mapping=dict((httpmethod, methodname) for httpmethod in httpmethods),
                         name=replace_methodname(route.name, methodname),
                         initkwargs=initkwargs,
                     ))

rest_framework/tests/test_routers.py

@@ -25,6 +25,10 @@ class BasicViewSet(viewsets.ViewSet):
     def action2(self, request, *args, **kwargs):
         return Response({'method': 'action2'})
 
+    @action(methods=['post', 'delete'])
+    def action3(self, request, *args, **kwargs):
+        return Response({'method': 'action2'})
+
     @link()
     def link1(self, request, *args, **kwargs):
         return Response({'method': 'link1'})
@@ -42,17 +46,20 @@ class TestSimpleRouter(TestCase):
         routes = self.router.get_routes(BasicViewSet)
         decorator_routes = routes[2:]
         # Make sure all these endpoints exist and none have been clobbered
-        for i, endpoint in enumerate(['action1', 'action2', 'link1', 'link2']):
+        for i, endpoint in enumerate(['action1', 'action2', 'action3', 'link1', 'link2']):
             route = decorator_routes[i]
             # check url listing
             self.assertEqual(route.url,
                              '^{{prefix}}/{{lookup}}/{0}/$'.format(endpoint))
             # check method to function mapping
-            if endpoint.startswith('action'):
+            if endpoint == 'action3':
-                method_map = 'post'
+                methods_map = ['post', 'delete']
+            elif endpoint.startswith('action'):
+                methods_map = ['post']
             else:
-                method_map = 'get'
+                methods_map = ['get']
-            self.assertEqual(route.mapping[method_map], endpoint)
+            for method in methods_map:
+                self.assertEqual(route.mapping[method], endpoint)
 
 
 class RouterTestModel(models.Model):