This article mainly refers to the Rest Framework official website documents: https://www.django-rest-framework.org/ 

And then I realize my own personal summary.

Development tools: Pycharm, python 3.7, Django 2.1, djangorest framework-3.9.4

Contents of this article

New project:

Serializer:

View:

urls.py:

Configure paging, app

Launch project test API

New project:

• Here, you can directly create a Django project through pycharm. The path is tutorial, and the App Name is quickstart (keep with the official website)
• You can also do this from the command line:

django-admin startproject tutorial .  # Note the trailing '.' character
cd tutorial
django-admin startapp quickstart
cd ..

• Initialize database, create initial user

python manage.py migrate
python manage.py createsuperuser --email admin@example.com --username admin

Serializer:

First, we'll define some serializers. Let's create a new module called tutorial/quickstart/serializers.py, which we'll use for data representation.

The HyperlinkedModelSerializer class is similar to the ModelSerializer class, except that it uses hyperlinks to represent relationships rather than primary keys.
By default, the serializer will contain a url field instead of a primary key field.
The url field will be represented by the hyperlinkeddidentityfield serializer field, and any relationships on the model will be represented by the hyperlinkedrelatitedfield serializer field.

# serializers.py

from django.contrib.auth.models import User, Group
from rest_framework import serializers


class UserSerializer(serializers.HyperlinkedModelSerializer):
    class Meta:
        model = User
        fields = ('url', 'username', 'email', 'groups')


class GroupSerializer(serializers.HyperlinkedModelSerializer):
    class Meta:
        model = Group
        fields = ('url', 'name')

View:

Complete view writing in tutorial/quickstart/views.py

from django.contrib.auth.models import User, Group
from rest_framework import viewsets
# from tutorial.quickstart.serializers import UserSerializer, GroupSerializer
from quickstart.serializers import UserSerializer, GroupSerializer


class UserViewSet(viewsets.ModelViewSet):
    """
    //User API node
    """
    queryset = User.objects.all().order_by('-date_joined')
    serializer_class = UserSerializer


class GroupViewSet(viewsets.ModelViewSet):
    """
    //Group API node
    """
    queryset = Group.objects.all()
    serializer_class = GroupSerializer

urls.py:

# tutorial/urls.py
from django.urls import include, path
from rest_framework import routers
# from tutorial.quickstart import views
from quickstart import views
# Automatically generate URL conf for our API by simply registering view sets with router classes
router = routers.DefaultRouter()
router.register(r'users', views.UserViewSet)
router.register(r'groups', views.GroupViewSet)


# Wire up our API using automatic URL routing.
# Additionally, we include login URLs for the browsable API.
urlpatterns = [
    path('', include(router.urls)),
    # Include default login and logout, authentication
    path('api-auth/', include('rest_framework.urls', namespace='rest_framework'))
]

Configure paging, app

Configure in tutorial/settings.py:

INSTALLED_APPS = (
    ...
    'rest_framework',
)


# pagination
REST_FRAMEWORK = {
    'DEFAULT_PAGINATION_CLASS': 'rest_framework.pagination.PageNumberPagination',
    'PAGE_SIZE': 10
}

Launch project test API

At this point, you can use the related interfaces of groups and users, get to get the data, and post to submit the data.

python manage.py runserver

*If there is any misunderstanding, please also point out