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Diffstat (limited to 'docs/api-guide/routers.md')
| -rw-r--r-- | docs/api-guide/routers.md | 115 |
1 files changed, 93 insertions, 22 deletions
diff --git a/docs/api-guide/routers.md b/docs/api-guide/routers.md index 7efc140a..819cf980 100644 --- a/docs/api-guide/routers.md +++ b/docs/api-guide/routers.md @@ -51,36 +51,41 @@ This means you'll need to explicitly set the `base_name` argument when registeri ### Extra link and actions -Any methods on the viewset decorated with `@link` or `@action` will also be routed. +Any methods on the viewset decorated with `@detail_route` or `@list_route` will also be routed. For example, given a method like this on the `UserViewSet` class: - from myapp.permissions import IsAdminOrIsSelf - from rest_framework.decorators import action - - @action(permission_classes=[IsAdminOrIsSelf]) - def set_password(self, request, pk=None): + from myapp.permissions import IsAdminOrIsSelf + from rest_framework.decorators import detail_route + + class UserViewSet(ModelViewSet): ... + + @detail_route(methods=['post'], permission_classes=[IsAdminOrIsSelf]) + def set_password(self, request, pk=None): + ... The following URL pattern would additionally be generated: * URL pattern: `^users/{pk}/set_password/$` Name: `'user-set-password'` +For more information see the viewset documentation on [marking extra actions for routing][route-decorators]. + # API Guide ## SimpleRouter -This router includes routes for the standard set of `list`, `create`, `retrieve`, `update`, `partial_update` and `destroy` actions. The viewset can also mark additional methods to be routed, using the `@link` or `@action` decorators. +This router includes routes for the standard set of `list`, `create`, `retrieve`, `update`, `partial_update` and `destroy` actions. The viewset can also mark additional methods to be routed, using the `@detail_route` or `@list_route` decorators. <table border=1> <tr><th>URL Style</th><th>HTTP Method</th><th>Action</th><th>URL Name</th></tr> <tr><td rowspan=2>{prefix}/</td><td>GET</td><td>list</td><td rowspan=2>{basename}-list</td></tr></tr> <tr><td>POST</td><td>create</td></tr> + <tr><td>{prefix}/{methodname}/</td><td>GET, or as specified by `methods` argument</td><td>`@list_route` decorated method</td><td>{basename}-{methodname}</td></tr> <tr><td rowspan=4>{prefix}/{lookup}/</td><td>GET</td><td>retrieve</td><td rowspan=4>{basename}-detail</td></tr></tr> <tr><td>PUT</td><td>update</td></tr> <tr><td>PATCH</td><td>partial_update</td></tr> <tr><td>DELETE</td><td>destroy</td></tr> - <tr><td rowspan=2>{prefix}/{lookup}/{methodname}/</td><td>GET</td><td>@link decorated method</td><td rowspan=2>{basename}-{methodname}</td></tr> - <tr><td>POST</td><td>@action decorated method</td></tr> + <tr><td>{prefix}/{lookup}/{methodname}/</td><td>GET, or as specified by `methods` argument</td><td>`@detail_route` decorated method</td><td>{basename}-{methodname}</td></tr> </table> By default the URLs created by `SimpleRouter` are appended with a trailing slash. @@ -90,6 +95,12 @@ This behavior can be modified by setting the `trailing_slash` argument to `False Trailing slashes are conventional in Django, but are not used by default in some other frameworks such as Rails. Which style you choose to use is largely a matter of preference, although some javascript frameworks may expect a particular routing style. +The router will match lookup values containing any characters except slashes and period characters. For a more restrictive (or lenient) lookup pattern, set the `lookup_value_regex` attribute on the viewset. For example, you can limit the lookup to valid UUIDs: + + class MyModelViewSet(mixins.RetrieveModelMixin, viewsets.GenericViewSet): + lookup_field = 'my_model_id' + lookup_value_regex = '[0-9a-f]{32}' + ## DefaultRouter This router is similar to `SimpleRouter` as above, but additionally includes a default API root view, that returns a response containing hyperlinks to all the list views. It also generates routes for optional `.json` style format suffixes. @@ -99,12 +110,12 @@ This router is similar to `SimpleRouter` as above, but additionally includes a d <tr><td>[.format]</td><td>GET</td><td>automatically generated root view</td><td>api-root</td></tr></tr> <tr><td rowspan=2>{prefix}/[.format]</td><td>GET</td><td>list</td><td rowspan=2>{basename}-list</td></tr></tr> <tr><td>POST</td><td>create</td></tr> + <tr><td>{prefix}/{methodname}/[.format]</td><td>GET, or as specified by `methods` argument</td><td>`@list_route` decorated method</td><td>{basename}-{methodname}</td></tr> <tr><td rowspan=4>{prefix}/{lookup}/[.format]</td><td>GET</td><td>retrieve</td><td rowspan=4>{basename}-detail</td></tr></tr> <tr><td>PUT</td><td>update</td></tr> <tr><td>PATCH</td><td>partial_update</td></tr> <tr><td>DELETE</td><td>destroy</td></tr> - <tr><td rowspan=2>{prefix}/{lookup}/{methodname}/[.format]</td><td>GET</td><td>@link decorated method</td><td rowspan=2>{basename}-{methodname}</td></tr> - <tr><td>POST</td><td>@action decorated method</td></tr> + <tr><td>{prefix}/{lookup}/{methodname}/[.format]</td><td>GET, or as specified by `methods` argument</td><td>`@detail_route` decorated method</td><td>{basename}-{methodname}</td></tr> </table> As with `SimpleRouter` the trailing slashes on the URL routes can be removed by setting the `trailing_slash` argument to `False` when instantiating the router. @@ -133,28 +144,87 @@ The arguments to the `Route` named tuple are: **initkwargs**: A dictionary of any additional arguments that should be passed when instantiating the view. Note that the `suffix` argument is reserved for identifying the viewset type, used when generating the view name and breadcrumb links. +## Customizing dynamic routes + +You can also customize how the `@list_route` and `@detail_route` decorators are routed. +To route either or both of these decorators, include a `DynamicListRoute` and/or `DynamicDetailRoute` named tuple in the `.routes` list. + +The arguments to `DynamicListRoute` and `DynamicDetailRoute` are: + +**url**: A string representing the URL to be routed. May include the same format strings as `Route`, and additionally accepts the `{methodname}` and `{methodnamehyphen}` format strings. + +**name**: The name of the URL as used in `reverse` calls. May include the following format strings: `{basename}`, `{methodname}` and `{methodnamehyphen}`. + +**initkwargs**: A dictionary of any additional arguments that should be passed when instantiating the view. + ## Example The following example will only route to the `list` and `retrieve` actions, and does not use the trailing slash convention. - from rest_framework.routers import Route, SimpleRouter + from rest_framework.routers import Route, DynamicDetailRoute, SimpleRouter - class ReadOnlyRouter(SimpleRouter): + class CustomReadOnlyRouter(SimpleRouter): """ A router for read-only APIs, which doesn't use trailing slashes. """ routes = [ - Route(url=r'^{prefix}$', - mapping={'get': 'list'}, - name='{basename}-list', - initkwargs={'suffix': 'List'}), - Route(url=r'^{prefix}/{lookup}$', - mapping={'get': 'retrieve'}, - name='{basename}-detail', - initkwargs={'suffix': 'Detail'}) + Route( + url=r'^{prefix}$', + mapping={'get': 'list'}, + name='{basename}-list', + initkwargs={'suffix': 'List'} + ), + Route( + url=r'^{prefix}/{lookup}$', + mapping={'get': 'retrieve'}, + name='{basename}-detail', + initkwargs={'suffix': 'Detail'} + ), + DynamicDetailRoute( + url=r'^{prefix}/{lookup}/{methodnamehyphen}$', + name='{basename}-{methodnamehyphen}', + initkwargs={} + ) ] -The `SimpleRouter` class provides another example of setting the `.routes` attribute. +Let's take a look at the routes our `CustomReadOnlyRouter` would generate for a simple viewset. + +`views.py`: + + class UserViewSet(viewsets.ReadOnlyModelViewSet): + """ + A viewset that provides the standard actions + """ + queryset = User.objects.all() + serializer_class = UserSerializer + lookup_field = 'username' + + @detail_route() + def group_names(self, request): + """ + Returns a list of all the group names that the given + user belongs to. + """ + user = self.get_object() + groups = user.groups.all() + return Response([group.name for group in groups]) + +`urls.py`: + + router = CustomReadOnlyRouter() + router.register('users', UserViewSet) + urlpatterns = router.urls + +The following mappings would be generated... + +<table border=1> + <tr><th>URL</th><th>HTTP Method</th><th>Action</th><th>URL Name</th></tr> + <tr><td>/users</td><td>GET</td><td>list</td><td>user-list</td></tr> + <tr><td>/users/{username}</td><td>GET</td><td>retrieve</td><td>user-detail</td></tr> + <tr><td>/users/{username}/group-names</td><td>GET</td><td>group_names</td><td>user-group-names</td></tr> +</table> + +For another example of setting the `.routes` attribute, see the source code for the `SimpleRouter` class. ## Advanced custom routers @@ -180,6 +250,7 @@ The [wq.db package][wq.db] provides an advanced [Router][wq.db-router] class (an app.router.register_model(MyModel) [cite]: http://guides.rubyonrails.org/routing.html +[route-decorators]: viewsets.html#marking-extra-actions-for-routing [drf-nested-routers]: https://github.com/alanjds/drf-nested-routers [wq.db]: http://wq.io/wq.db [wq.db-router]: http://wq.io/docs/app.py |