![]() ![]() The first thing we need to get started on our Web API is to provide a way of serializing and deserializing the snippet instances into representations such as json. We'll also need to create an initial migration for our snippet model, and sync the database for the first time. Style = models.CharField(choices=STYLE_CHOICES, default='friendly', max_length=100) Language = models.CharField(choices=LANGUAGE_CHOICES, default='python', max_length=100) Linenos = models.BooleanField(default=False) Title = models.CharField(max_length=100, blank=True, default='') STYLE_CHOICES = sorted()Ĭreated = models.DateTimeField(auto_now_add=True) LANGUAGE_CHOICES = sorted(, item) for item in LEXERS]) from django.db import modelsįrom pygments.lexers import get_all_lexersįrom pygments.styles import get_all_styles Although you will find them in our repository version of this tutorial code, we have omitted them here to focus on the code itself. Note: Good programming practices include comments. Go ahead and edit the snippets/models.py file. Creating a model to work withįor the purposes of this tutorial we're going to start by creating a simple Snippet model that is used to store code snippets. Let's edit the tutorial/settings.py file: INSTALLED_APPS = [ We'll need to add our new snippets app and the rest_framework app to INSTALLED_APPS. Once that's done we can create an app that we'll use to create a simple Web API. To get started, let's create a new project to work with. For more information see the venv documentation. Note: To exit the virtual environment at any time, just type deactivate. Pip install pygments # We'll be using this for the code highlighting Now that we're inside a virtual environment, we can install our package requirements. This will make sure our package configuration is kept nicely isolated from any other projects we're working on. The completed implementation is also online as a sandbox version for testing, available here.īefore we do anything else we'll create a new virtual environment, using venv. Note: The code for this tutorial is available in the encode/rest-framework-tutorial repository on GitHub. If you just want a quick overview, you should head over to the quickstart documentation instead. The tutorial is fairly in-depth, so you should probably get a cookie and a cup of your favorite brew before getting started. Along the way it will introduce the various components that make up REST framework, and give you a comprehensive understanding of how everything fits together. ![]() For example.This tutorial will cover creating a simple pastebin code highlighting Web API. The default filter backends may be set globally, using the DEFAULT_FILTER_BACKENDS setting. Generic filters can also present themselves as HTML controls in the browsable API and admin API. Queryset = queryset.filter(purchaser_username=username)Īs well as being able to override the default queryset, REST framework also includes support for generic filtering backends that allow you to easily construct complex searches and filters. Optionally restricts the returned purchases to a given user,īy filtering against a `username` query parameter in the URL. get_queryset() to deal with URLs such as, and filter the queryset only if the username parameter is included in the URL: class PurchaseList(generics.ListAPIView): ![]() Return (purchaser_username=username)Ī final example of filtering the initial queryset would be to determine the initial queryset based on query parameters in the url. The user as determined by the username portion of the URL. This view should return a list of all the purchases for ![]() You could then write a view that returned a purchase queryset filtered by the username portion of the URL: class PurchaseList(generics.ListAPIView): Return (purchaser=user)Īnother style of filtering might involve restricting the queryset based on some part of the URL.įor example if your URL config contained an entry like this: re_path('^purchases/(?P.+)/$', PurchaseList.as_view()), This view should return a list of all the purchases You can do so by filtering based on the value of er.įor example: from myapp.models import Purchaseįrom rializers import PurchaseSerializerĬlass PurchaseList(generics.ListAPIView): You might want to filter the queryset to ensure that only results relevant to the currently authenticated user making the request are returned. Overriding this method allows you to customize the queryset returned by the view in a number of different ways. The simplest way to filter the queryset of any view that subclasses GenericAPIView is to override the. Often you will want your API to restrict the items that are returned by the queryset. The default behavior of REST framework's generic list views is to return the entire queryset for a model manager. Usually, though, you'll need to select only a subset of the complete set of objects. The root QuerySet provided by the Manager describes all objects in the database table. ![]()
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