2014-11-25 19:04:38 +03:00
<!DOCTYPE html>
< html lang = "en" >
< head >
< meta http-equiv = "Content-Type" content = "text/html; charset=UTF-8" >
< meta charset = "utf-8" >
2015-05-15 11:19:49 +03:00
< title > 3 - Class based views - Django REST framework< / title >
2014-11-25 19:04:38 +03:00
< link href = "../../img/favicon.ico" rel = "icon" type = "image/x-icon" >
2018-10-11 16:48:33 +03:00
< link rel = "canonical" href = "https://www.django-rest-framework.org/tutorial/3-class-based-views/" / >
2014-11-25 19:04:38 +03:00
< meta name = "viewport" content = "width=device-width, initial-scale=1.0" >
< meta name = "description" content = "Django, API, REST, 3 - Class based views" >
< meta name = "author" content = "Tom Christie" >
<!-- Le styles -->
< link href = "../../css/prettify.css" rel = "stylesheet" >
< link href = "../../css/bootstrap.css" rel = "stylesheet" >
< link href = "../../css/bootstrap-responsive.css" rel = "stylesheet" >
< link href = "../../css/default.css" rel = "stylesheet" >
<!-- Le HTML5 shim, for IE6 - 8 support of HTML5 elements -->
<!-- [if lt IE 9]>
< script src = "http://html5shim.googlecode.com/svn/trunk/html5.js" > < / script >
<![endif]-->
< script type = "text/javascript" >
var _gaq = _gaq || [];
_gaq.push(['_setAccount', 'UA-18852272-2']);
_gaq.push(['_trackPageview']);
(function() {
var ga = document.createElement('script');
ga.type = 'text/javascript';
ga.async = true;
ga.src = ('https:' == document.location.protocol ? 'https://ssl' : 'http://www') + '.google-analytics.com/ga.js';
var s = document.getElementsByTagName('script')[0];
s.parentNode.insertBefore(ga, s);
})();
< / script >
< style >
2016-05-26 13:48:39 +03:00
#sidebarInclude img {
margin-bottom: 10px;
}
#sidebarInclude a.promo {
2014-11-25 19:04:38 +03:00
color: black;
2016-05-26 13:48:39 +03:00
}
2014-11-25 19:04:38 +03:00
@media (max-width: 767px) {
div.promo {
display: none;
}
}
< / style >
< / head >
< body onload = "prettyPrint()" class = "-page" >
< div class = "wrapper" >
< div class = "navbar navbar-inverse navbar-fixed-top" >
< div class = "navbar-inner" >
< div class = "container-fluid" >
2017-05-12 19:15:00 +03:00
< a class = "repo-link btn btn-primary btn-small" href = "https://github.com/encode/django-rest-framework/tree/master" > GitHub< / a >
2015-06-04 17:37:22 +03:00
< a class = "repo-link btn btn-inverse btn-small " rel = "prev" href = "../4-authentication-and-permissions/" >
2014-11-25 19:04:38 +03:00
Next < i class = "icon-arrow-right icon-white" > < / i >
< / a >
2015-06-04 17:37:22 +03:00
< a class = "repo-link btn btn-inverse btn-small " rel = "next" href = "../2-requests-and-responses/" >
2014-11-25 19:04:38 +03:00
< i class = "icon-arrow-left icon-white" > < / i > Previous
< / a >
2015-06-04 17:37:22 +03:00
< a id = "search_modal_show" class = "repo-link btn btn-inverse btn-small" href = "#mkdocs_search_modal" data-toggle = "modal" data-target = "#mkdocs_search_modal" > < i class = "icon-search icon-white" > < / i > Search< / a >
2014-11-25 19:04:38 +03:00
< a class = "btn btn-navbar" data-toggle = "collapse" data-target = ".nav-collapse" >
< span class = "icon-bar" > < / span >
< span class = "icon-bar" > < / span >
< span class = "icon-bar" > < / span >
< / a >
2018-10-11 16:48:33 +03:00
< a class = "brand" href = "https://www.django-rest-framework.org/" > Django REST framework< / a >
2014-11-25 19:04:38 +03:00
< div class = "nav-collapse collapse" >
<!-- Main navigation -->
< ul class = "nav navbar-nav" >
2015-06-04 17:37:22 +03:00
< li >
< a href = "../.." > Home< / a >
< / li >
2014-11-25 19:31:00 +03:00
< li class = "dropdown active" >
< a href = "#" class = "dropdown-toggle" data-toggle = "dropdown" > Tutorial < b class = "caret" > < / b > < / a >
2014-11-25 19:04:38 +03:00
< ul class = "dropdown-menu" >
< li >
2015-06-04 17:37:22 +03:00
< a href = "../quickstart/" > Quickstart< / a >
2014-11-25 19:04:38 +03:00
< / li >
< li >
2015-06-04 17:37:22 +03:00
< a href = "../1-serialization/" > 1 - Serialization< / a >
2014-11-25 19:04:38 +03:00
< / li >
< li >
2015-06-04 17:37:22 +03:00
< a href = "../2-requests-and-responses/" > 2 - Requests and responses< / a >
2014-11-25 19:04:38 +03:00
< / li >
< li class = "active" >
2015-06-04 17:37:22 +03:00
< a href = "./" > 3 - Class based views< / a >
2014-11-25 19:04:38 +03:00
< / li >
< li >
2015-06-04 17:37:22 +03:00
< a href = "../4-authentication-and-permissions/" > 4 - Authentication and permissions< / a >
2014-11-25 19:04:38 +03:00
< / li >
< li >
2015-06-04 17:37:22 +03:00
< a href = "../5-relationships-and-hyperlinked-apis/" > 5 - Relationships and hyperlinked APIs< / a >
2014-11-25 19:04:38 +03:00
< / li >
< li >
2015-06-04 17:37:22 +03:00
< a href = "../6-viewsets-and-routers/" > 6 - Viewsets and routers< / a >
2014-11-25 19:04:38 +03:00
< / li >
2016-07-14 15:05:57 +03:00
< li >
< a href = "../7-schemas-and-client-libraries/" > 7 - Schemas and client libraries< / a >
< / li >
2014-11-25 19:04:38 +03:00
< / ul >
< / li >
< li class = "dropdown" >
< a href = "#" class = "dropdown-toggle" data-toggle = "dropdown" > API Guide < b class = "caret" > < / b > < / a >
< ul class = "dropdown-menu" >
< li >
2015-06-04 17:37:22 +03:00
< a href = "../../api-guide/requests/" > Requests< / a >
2014-11-25 19:04:38 +03:00
< / li >
< li >
2015-06-04 17:37:22 +03:00
< a href = "../../api-guide/responses/" > Responses< / a >
2014-11-25 19:04:38 +03:00
< / li >
< li >
2015-06-04 17:37:22 +03:00
< a href = "../../api-guide/views/" > Views< / a >
2014-11-25 19:04:38 +03:00
< / li >
< li >
2015-06-04 17:37:22 +03:00
< a href = "../../api-guide/generic-views/" > Generic views< / a >
2014-11-25 19:04:38 +03:00
< / li >
< li >
2015-06-04 17:37:22 +03:00
< a href = "../../api-guide/viewsets/" > Viewsets< / a >
2014-11-25 19:04:38 +03:00
< / li >
< li >
2015-06-04 17:37:22 +03:00
< a href = "../../api-guide/routers/" > Routers< / a >
2014-11-25 19:04:38 +03:00
< / li >
< li >
2015-06-04 17:37:22 +03:00
< a href = "../../api-guide/parsers/" > Parsers< / a >
2014-11-25 19:04:38 +03:00
< / li >
< li >
2015-06-04 17:37:22 +03:00
< a href = "../../api-guide/renderers/" > Renderers< / a >
2014-11-25 19:04:38 +03:00
< / li >
< li >
2015-06-04 17:37:22 +03:00
< a href = "../../api-guide/serializers/" > Serializers< / a >
2014-11-25 19:04:38 +03:00
< / li >
< li >
2015-06-04 17:37:22 +03:00
< a href = "../../api-guide/fields/" > Serializer fields< / a >
2014-11-25 19:04:38 +03:00
< / li >
< li >
2015-06-04 17:37:22 +03:00
< a href = "../../api-guide/relations/" > Serializer relations< / a >
2014-11-25 19:04:38 +03:00
< / li >
2014-12-01 15:20:07 +03:00
< li >
2015-06-04 17:37:22 +03:00
< a href = "../../api-guide/validators/" > Validators< / a >
2014-12-01 15:20:07 +03:00
< / li >
2014-11-25 19:04:38 +03:00
< li >
2015-06-04 17:37:22 +03:00
< a href = "../../api-guide/authentication/" > Authentication< / a >
2014-11-25 19:04:38 +03:00
< / li >
< li >
2015-06-04 17:37:22 +03:00
< a href = "../../api-guide/permissions/" > Permissions< / a >
2014-11-25 19:04:38 +03:00
< / li >
2018-10-11 16:48:33 +03:00
< li >
< a href = "../../api-guide/caching/" > Caching< / a >
< / li >
2014-11-25 19:04:38 +03:00
< li >
2015-06-04 17:37:22 +03:00
< a href = "../../api-guide/throttling/" > Throttling< / a >
2014-11-25 19:04:38 +03:00
< / li >
< li >
2015-06-04 17:37:22 +03:00
< a href = "../../api-guide/filtering/" > Filtering< / a >
2014-11-25 19:04:38 +03:00
< / li >
< li >
2015-06-04 17:37:22 +03:00
< a href = "../../api-guide/pagination/" > Pagination< / a >
2014-11-25 19:04:38 +03:00
< / li >
2015-03-06 15:05:16 +03:00
< li >
2015-06-04 17:37:22 +03:00
< a href = "../../api-guide/versioning/" > Versioning< / a >
2015-03-06 15:05:16 +03:00
< / li >
2014-11-25 19:04:38 +03:00
< li >
2015-06-04 17:37:22 +03:00
< a href = "../../api-guide/content-negotiation/" > Content negotiation< / a >
2014-11-25 19:04:38 +03:00
< / li >
2014-12-18 18:42:42 +03:00
< li >
2015-06-04 17:37:22 +03:00
< a href = "../../api-guide/metadata/" > Metadata< / a >
2014-12-18 18:42:42 +03:00
< / li >
2016-07-07 11:41:32 +03:00
< li >
< a href = "../../api-guide/schemas/" > Schemas< / a >
< / li >
2014-11-25 19:04:38 +03:00
< li >
2015-06-04 17:37:22 +03:00
< a href = "../../api-guide/format-suffixes/" > Format suffixes< / a >
2014-11-25 19:04:38 +03:00
< / li >
< li >
2015-06-04 17:37:22 +03:00
< a href = "../../api-guide/reverse/" > Returning URLs< / a >
2014-11-25 19:04:38 +03:00
< / li >
< li >
2015-06-04 17:37:22 +03:00
< a href = "../../api-guide/exceptions/" > Exceptions< / a >
2014-11-25 19:04:38 +03:00
< / li >
< li >
2015-06-04 17:37:22 +03:00
< a href = "../../api-guide/status-codes/" > Status codes< / a >
2014-11-25 19:04:38 +03:00
< / li >
< li >
2015-06-04 17:37:22 +03:00
< a href = "../../api-guide/testing/" > Testing< / a >
2014-11-25 19:04:38 +03:00
< / li >
< li >
2015-06-04 17:37:22 +03:00
< a href = "../../api-guide/settings/" > Settings< / a >
2014-11-25 19:04:38 +03:00
< / li >
< / ul >
< / li >
< li class = "dropdown" >
< a href = "#" class = "dropdown-toggle" data-toggle = "dropdown" > Topics < b class = "caret" > < / b > < / a >
< ul class = "dropdown-menu" >
< li >
2015-06-04 17:37:22 +03:00
< a href = "../../topics/documenting-your-api/" > Documenting your API< / a >
2014-11-25 19:04:38 +03:00
< / li >
2016-07-07 11:41:32 +03:00
< li >
< a href = "../../topics/api-clients/" > API Clients< / a >
< / li >
2015-03-06 15:05:16 +03:00
< li >
2015-06-04 17:37:22 +03:00
< a href = "../../topics/internationalization/" > Internationalization< / a >
2015-03-06 15:05:16 +03:00
< / li >
2014-11-25 19:04:38 +03:00
< li >
2015-06-04 17:37:22 +03:00
< a href = "../../topics/ajax-csrf-cors/" > AJAX, CSRF & CORS< / a >
2014-11-25 19:04:38 +03:00
< / li >
2015-10-28 14:35:39 +03:00
< li >
< a href = "../../topics/html-and-forms/" > HTML & Forms< / a >
< / li >
2014-11-25 19:04:38 +03:00
< li >
2015-06-04 17:37:22 +03:00
< a href = "../../topics/browser-enhancements/" > Browser Enhancements< / a >
2014-11-25 19:04:38 +03:00
< / li >
< li >
2015-06-04 17:37:22 +03:00
< a href = "../../topics/browsable-api/" > The Browsable API< / a >
2014-11-25 19:04:38 +03:00
< / li >
< li >
2015-06-04 17:37:22 +03:00
< a href = "../../topics/rest-hypermedia-hateoas/" > REST, Hypermedia & HATEOAS< / a >
2014-11-25 19:04:38 +03:00
< / li >
2018-10-11 16:48:33 +03:00
< / ul >
< / li >
< li class = "dropdown" >
< a href = "#" class = "dropdown-toggle" data-toggle = "dropdown" > Community < b class = "caret" > < / b > < / a >
< ul class = "dropdown-menu" >
2014-11-25 19:04:38 +03:00
< li >
2018-10-11 16:48:33 +03:00
< a href = "../../community/tutorials-and-resources/" > Tutorials and Resources< / a >
2017-02-25 22:59:44 +03:00
< / li >
< li >
2018-10-11 16:48:33 +03:00
< a href = "../../community/third-party-packages/" > Third Party Packages< / a >
2014-11-25 19:04:38 +03:00
< / li >
< li >
2018-10-11 16:48:33 +03:00
< a href = "../../community/contributing/" > Contributing to REST framework< / a >
2014-11-25 19:04:38 +03:00
< / li >
2014-12-18 16:49:50 +03:00
< li >
2018-10-11 16:48:33 +03:00
< a href = "../../community/project-management/" > Project management< / a >
2014-12-18 16:49:50 +03:00
< / li >
2017-03-09 17:59:14 +03:00
< li >
2018-10-11 16:48:33 +03:00
< a href = "../../community/release-notes/" > Release Notes< / a >
2017-03-09 17:59:14 +03:00
< / li >
2014-11-25 19:04:38 +03:00
< li >
2018-10-11 16:48:33 +03:00
< a href = "../../community/3.8-announcement/" > 3.8 Announcement< / a >
2014-11-25 19:04:38 +03:00
< / li >
2014-12-01 15:20:07 +03:00
< li >
2018-10-11 16:48:33 +03:00
< a href = "../../community/3.7-announcement/" > 3.7 Announcement< / a >
2014-12-01 15:20:07 +03:00
< / li >
2015-08-06 16:31:52 +03:00
< li >
2018-10-11 16:48:33 +03:00
< a href = "../../community/3.6-announcement/" > 3.6 Announcement< / a >
2015-08-06 16:31:52 +03:00
< / li >
2015-10-28 14:35:39 +03:00
< li >
2018-10-11 16:48:33 +03:00
< a href = "../../community/3.5-announcement/" > 3.5 Announcement< / a >
2015-10-28 14:35:39 +03:00
< / li >
2016-07-14 15:05:57 +03:00
< li >
2018-10-11 16:48:33 +03:00
< a href = "../../community/3.4-announcement/" > 3.4 Announcement< / a >
2016-07-14 15:05:57 +03:00
< / li >
2016-10-20 18:31:37 +03:00
< li >
2018-10-11 16:48:33 +03:00
< a href = "../../community/3.3-announcement/" > 3.3 Announcement< / a >
2016-10-20 18:31:37 +03:00
< / li >
2017-03-09 17:59:14 +03:00
< li >
2018-10-11 16:48:33 +03:00
< a href = "../../community/3.2-announcement/" > 3.2 Announcement< / a >
2017-03-09 17:59:14 +03:00
< / li >
2017-10-06 15:06:25 +03:00
< li >
2018-10-11 16:48:33 +03:00
< a href = "../../community/3.1-announcement/" > 3.1 Announcement< / a >
2017-10-06 15:06:25 +03:00
< / li >
2018-04-03 16:54:40 +03:00
< li >
2018-10-11 16:48:33 +03:00
< a href = "../../community/3.0-announcement/" > 3.0 Announcement< / a >
2018-04-03 16:54:40 +03:00
< / li >
2014-11-25 19:04:38 +03:00
< li >
2018-10-11 16:48:33 +03:00
< a href = "../../community/kickstarter-announcement/" > Kickstarter Announcement< / a >
2014-11-25 19:04:38 +03:00
< / li >
2016-05-26 13:48:39 +03:00
< li >
2018-10-11 16:48:33 +03:00
< a href = "../../community/mozilla-grant/" > Mozilla Grant< / a >
2016-05-26 13:48:39 +03:00
< / li >
< li >
2018-10-11 16:48:33 +03:00
< a href = "../../community/funding/" > Funding< / a >
2016-05-26 13:48:39 +03:00
< / li >
2014-11-25 19:04:38 +03:00
< li >
2018-10-11 16:48:33 +03:00
< a href = "../../community/jobs/" > Jobs< / a >
2014-11-25 19:04:38 +03:00
< / li >
< / ul >
< / li >
< / ul >
< / div >
<!-- /.nav - collapse -->
< / div >
< / div >
< / div >
< div class = "body-content" >
< div class = "container-fluid" >
<!-- Search Modal -->
2015-06-04 17:37:22 +03:00
< div id = "mkdocs_search_modal" class = "modal hide fade" tabindex = "-1" role = "dialog" aria-labelledby = "myModalLabel" aria-hidden = "true" >
2014-11-25 19:04:38 +03:00
< div class = "modal-header" >
< button type = "button" class = "close" data-dismiss = "modal" aria-hidden = "true" > × < / button >
< h3 id = "myModalLabel" > Documentation search< / h3 >
< / div >
< div class = "modal-body" >
2015-08-06 16:31:52 +03:00
< form role = "form" autocomplete = "off" >
2015-06-04 17:37:22 +03:00
< div class = "form-group" >
< input type = "text" name = "q" class = "form-control" placeholder = "Search..." id = "mkdocs-search-query" >
< / div >
< / form >
< div id = "mkdocs-search-results" > < / div >
2014-11-25 19:04:38 +03:00
< / div >
< div class = "modal-footer" >
< button class = "btn" data-dismiss = "modal" aria-hidden = "true" > Close< / button >
< / div >
< / div >
< div class = "row-fluid" >
< div class = "span3" >
< div id = "table-of-contents" >
< ul class = "nav nav-list side-nav well sidebar-nav-fixed" >
< li class = "main" >
2016-07-14 15:05:57 +03:00
< a href = "#tutorial-3-class-based-views" > Tutorial 3: Class-based Views< / a >
2014-11-25 19:04:38 +03:00
< / li >
< li >
2016-07-14 15:05:57 +03:00
< a href = "#rewriting-our-api-using-class-based-views" > Rewriting our API using class-based views< / a >
2014-11-25 19:04:38 +03:00
< / li >
< li >
< a href = "#using-mixins" > Using mixins< / a >
< / li >
< li >
2016-07-14 15:05:57 +03:00
< a href = "#using-generic-class-based-views" > Using generic class-based views< / a >
2014-11-25 19:04:38 +03:00
< / li >
2016-05-26 13:48:39 +03:00
< div class = "promo" >
< hr / >
< div id = "sidebarInclude" >
< / div >
2014-11-25 19:04:38 +03:00
< / ul >
< / div >
< / div >
< div id = "main-content" class = "span9" >
2015-06-04 17:37:22 +03:00
2016-07-14 15:05:57 +03:00
< h1 id = "tutorial-3-class-based-views" > < a class = "toclink" href = "#tutorial-3-class-based-views" > Tutorial 3: Class-based Views< / a > < / h1 >
2018-01-15 17:42:44 +03:00
< p > We can also write our API views using class-based views, rather than function based views. As we'll see this is a powerful pattern that allows us to reuse common functionality, and helps us keep our code < a href = "https://en.wikipedia.org/wiki/Don't_repeat_yourself" > DRY< / a > .< / p >
2016-07-14 15:05:57 +03:00
< h2 id = "rewriting-our-api-using-class-based-views" > < a class = "toclink" href = "#rewriting-our-api-using-class-based-views" > Rewriting our API using class-based views< / a > < / h2 >
< p > We'll start by rewriting the root view as a class-based view. All this involves is a little bit of refactoring of < code > views.py< / code > .< / p >
2014-11-25 19:04:38 +03:00
< pre > < code > from snippets.models import Snippet
from snippets.serializers import SnippetSerializer
from django.http import Http404
from rest_framework.views import APIView
from rest_framework.response import Response
from rest_framework import status
class SnippetList(APIView):
"""
List all snippets, or create a new snippet.
"""
def get(self, request, format=None):
snippets = Snippet.objects.all()
serializer = SnippetSerializer(snippets, many=True)
return Response(serializer.data)
def post(self, request, format=None):
2014-12-01 15:20:07 +03:00
serializer = SnippetSerializer(data=request.data)
2014-11-25 19:04:38 +03:00
if serializer.is_valid():
serializer.save()
return Response(serializer.data, status=status.HTTP_201_CREATED)
return Response(serializer.errors, status=status.HTTP_400_BAD_REQUEST)
< / code > < / pre >
< p > So far, so good. It looks pretty similar to the previous case, but we've got better separation between the different HTTP methods. We'll also need to update the instance view in < code > views.py< / code > .< / p >
< pre > < code > class SnippetDetail(APIView):
"""
Retrieve, update or delete a snippet instance.
"""
2016-10-20 18:31:37 +03:00
def get_object(self, pk):
2014-11-25 19:04:38 +03:00
try:
2016-10-20 18:31:37 +03:00
return Snippet.objects.get(pk=pk)
2014-11-25 19:04:38 +03:00
except Snippet.DoesNotExist:
raise Http404
2016-10-20 18:31:37 +03:00
def get(self, request, pk, format=None):
snippet = self.get_object(pk)
2014-11-25 19:04:38 +03:00
serializer = SnippetSerializer(snippet)
return Response(serializer.data)
2016-10-20 18:31:37 +03:00
def put(self, request, pk, format=None):
snippet = self.get_object(pk)
2014-12-01 15:20:07 +03:00
serializer = SnippetSerializer(snippet, data=request.data)
2014-11-25 19:04:38 +03:00
if serializer.is_valid():
serializer.save()
return Response(serializer.data)
return Response(serializer.errors, status=status.HTTP_400_BAD_REQUEST)
2016-10-20 18:31:37 +03:00
def delete(self, request, pk, format=None):
snippet = self.get_object(pk)
2014-11-25 19:04:38 +03:00
snippet.delete()
return Response(status=status.HTTP_204_NO_CONTENT)
< / code > < / pre >
< p > That's looking good. Again, it's still pretty similar to the function based view right now.< / p >
2017-12-20 17:34:31 +03:00
< p > We'll also need to refactor our < code > snippets/urls.py< / code > slightly now that we're using class-based views.< / p >
2018-10-11 16:48:33 +03:00
< pre > < code > from django.urls import path
2014-11-25 19:04:38 +03:00
from rest_framework.urlpatterns import format_suffix_patterns
from snippets import views
urlpatterns = [
2018-10-11 16:48:33 +03:00
path('snippets/', views.SnippetList.as_view()),
path('snippets/< int:pk> /', views.SnippetDetail.as_view()),
2014-11-25 19:04:38 +03:00
]
urlpatterns = format_suffix_patterns(urlpatterns)
< / code > < / pre >
< p > Okay, we're done. If you run the development server everything should be working just as before.< / p >
2015-11-04 17:59:23 +03:00
< h2 id = "using-mixins" > < a class = "toclink" href = "#using-mixins" > Using mixins< / a > < / h2 >
2016-07-14 15:05:57 +03:00
< p > One of the big wins of using class-based views is that it allows us to easily compose reusable bits of behaviour.< / p >
2014-11-25 19:04:38 +03:00
< p > The create/retrieve/update/delete operations that we've been using so far are going to be pretty similar for any model-backed API views we create. Those bits of common behaviour are implemented in REST framework's mixin classes.< / p >
< p > Let's take a look at how we can compose the views by using the mixin classes. Here's our < code > views.py< / code > module again.< / p >
< pre > < code > from snippets.models import Snippet
from snippets.serializers import SnippetSerializer
from rest_framework import mixins
from rest_framework import generics
class SnippetList(mixins.ListModelMixin,
mixins.CreateModelMixin,
generics.GenericAPIView):
queryset = Snippet.objects.all()
serializer_class = SnippetSerializer
def get(self, request, *args, **kwargs):
return self.list(request, *args, **kwargs)
def post(self, request, *args, **kwargs):
return self.create(request, *args, **kwargs)
< / code > < / pre >
< p > We'll take a moment to examine exactly what's happening here. We're building our view using < code > GenericAPIView< / code > , and adding in < code > ListModelMixin< / code > and < code > CreateModelMixin< / code > .< / p >
< p > The base class provides the core functionality, and the mixin classes provide the < code > .list()< / code > and < code > .create()< / code > actions. We're then explicitly binding the < code > get< / code > and < code > post< / code > methods to the appropriate actions. Simple enough stuff so far.< / p >
< pre > < code > class SnippetDetail(mixins.RetrieveModelMixin,
mixins.UpdateModelMixin,
mixins.DestroyModelMixin,
generics.GenericAPIView):
queryset = Snippet.objects.all()
serializer_class = SnippetSerializer
def get(self, request, *args, **kwargs):
return self.retrieve(request, *args, **kwargs)
def put(self, request, *args, **kwargs):
return self.update(request, *args, **kwargs)
def delete(self, request, *args, **kwargs):
return self.destroy(request, *args, **kwargs)
< / code > < / pre >
< p > Pretty similar. Again we're using the < code > GenericAPIView< / code > class to provide the core functionality, and adding in mixins to provide the < code > .retrieve()< / code > , < code > .update()< / code > and < code > .destroy()< / code > actions.< / p >
2016-07-14 15:05:57 +03:00
< h2 id = "using-generic-class-based-views" > < a class = "toclink" href = "#using-generic-class-based-views" > Using generic class-based views< / a > < / h2 >
2014-11-25 19:04:38 +03:00
< p > Using the mixin classes we've rewritten the views to use slightly less code than before, but we can go one step further. REST framework provides a set of already mixed-in generic views that we can use to trim down our < code > views.py< / code > module even more.< / p >
< pre > < code > from snippets.models import Snippet
from snippets.serializers import SnippetSerializer
from rest_framework import generics
class SnippetList(generics.ListCreateAPIView):
queryset = Snippet.objects.all()
serializer_class = SnippetSerializer
class SnippetDetail(generics.RetrieveUpdateDestroyAPIView):
queryset = Snippet.objects.all()
serializer_class = SnippetSerializer
< / code > < / pre >
< p > Wow, that's pretty concise. We've gotten a huge amount for free, and our code looks like good, clean, idiomatic Django.< / p >
2015-06-04 17:37:22 +03:00
< p > Next we'll move onto < a href = "../4-authentication-and-permissions/" > part 4 of the tutorial< / a > , where we'll take a look at how we can deal with authentication and permissions for our API.< / p >
2015-05-15 11:19:49 +03:00
2015-06-23 14:05:53 +03:00
< / div > <!-- /span -->
< / div > <!-- /row -->
< / div > <!-- /.fluid - container -->
< / div > <!-- /.body content -->
2014-11-25 19:04:38 +03:00
< div id = "push" > < / div >
2015-06-23 14:05:53 +03:00
< / div > <!-- /.wrapper -->
2014-11-25 19:04:38 +03:00
< footer class = "span12" >
2015-10-28 14:35:39 +03:00
< p > Documentation built with < a href = "http://www.mkdocs.org/" > MkDocs< / a > .
2014-11-25 19:04:38 +03:00
< / p >
< / footer >
<!-- Le javascript
================================================== -->
<!-- Placed at the end of the document so the pages load faster -->
< script src = "../../js/jquery-1.8.1-min.js" > < / script >
< script src = "../../js/prettify-1.0.js" > < / script >
< script src = "../../js/bootstrap-2.1.1-min.js" > < / script >
2016-05-26 13:48:39 +03:00
< script src = "https://fund.django-rest-framework.org/sidebar_include.js" > < / script >
2015-06-04 17:37:22 +03:00
< script > var base _url = '../..' ; < / script >
< script src = "../../mkdocs/js/require.js" > < / script >
2014-12-11 12:55:10 +03:00
< script src = "../../js/theme.js" > < / script >
2014-11-25 19:04:38 +03:00
< script >
var shiftWindow = function() {
scrollBy(0, -50)
};
2015-06-23 14:05:53 +03:00
2014-11-25 19:04:38 +03:00
if (location.hash) shiftWindow();
window.addEventListener("hashchange", shiftWindow);
$('.dropdown-menu').on('click touchstart', function(event) {
event.stopPropagation();
});
2015-06-23 14:05:53 +03:00
// Dynamically force sidenav/dropdown to no higher than browser window
$('.side-nav, .dropdown-menu').css('max-height', window.innerHeight - 130);
2014-11-25 19:04:38 +03:00
$(function() {
$(window).resize(function() {
2015-06-23 14:05:53 +03:00
$('.side-nav, .dropdown-menu').css('max-height', window.innerHeight - 130);
2014-11-25 19:04:38 +03:00
});
});
< / script >
< / body >
< / html >
