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diff --git a/docs/howto/reverse.rst b/docs/howto/reverse.rst new file mode 100644 index 00000000..73b8fa4d --- /dev/null +++ b/docs/howto/reverse.rst @@ -0,0 +1,39 @@ +Returning URIs from your Web APIs +================================= + +As a rule, it's probably better practice to return absolute URIs from you web APIs, e.g. "http://example.com/foobar", rather than returning relative URIs, e.g. "/foobar". + +The advantages of doing so are: + +* It's more explicit. +* It leaves less work for your API clients. +* There's no ambiguity about the meaning of the string when it's found in representations such as JSON that do not have a native URI type. +* It allows us to easily do things like markup HTML representations with hyperlinks. + +Django REST framework provides two utility functions to make it simpler to return absolute URIs from your Web API. + +There's no requirement for you to use them, but if you do then the self-describing API will be able to automatically hyperlink its output for you, which makes browsing the API much easier. + +reverse(viewname, request, ...) +------------------------------- + +The :py:func:`~reverse.reverse` function has the same behavior as `django.core.urlresolvers.reverse`_, except that it takes a request object and returns a fully qualified URL, using the request to determine the host and port:: + + from djangorestframework.reverse import reverse + from djangorestframework.views import View + + class MyView(View): + def get(self, request): + context = { + 'url': reverse('year-summary', request, args=[1945]) + } + + return Response(context) + +reverse_lazy(viewname, request, ...) +------------------------------------ + +The :py:func:`~reverse.reverse_lazy` function has the same behavior as `django.core.urlresolvers.reverse_lazy`_, except that it takes a request object and returns a fully qualified URL, using the request to determine the host and port. + +.. _django.core.urlresolvers.reverse: https://docs.djangoproject.com/en/dev/topics/http/urls/#reverse +.. _django.core.urlresolvers.reverse_lazy: https://docs.djangoproject.com/en/dev/topics/http/urls/#reverse-lazy |
