install django with restapi

install libraries

create a virtual environment activate it and install django, djangoframework

$ pip install django
$ pip install djangorestframework

create first project

$ django-admin startproject djswagger
$ cd djswagger

go to folder and set virtualenv folder

(macos)

$ setvirtualenvproject

(windows)

/> setprojectdir .

create firstapp

python manage.py startapp hr

add hr and rest_framework to settings.py

INSTALLED_APPS = [
	...
    'rest_framework',
    'hr',
]

migrate to create db

./manage.py migrate

create model under hr/models.py

class Employee(models.Model):
    id = models.IntegerField(primary_key=True,)
    name = models.CharField(max_length=20)
    salary = models.DecimalField(max_digits=10, decimal_places=2)

    def __str__(self):
        return str(self.id) + self.name + str(self.salary)

create serializers

under hr create serializers.py

from rest_framework import serializers
from hr.models import Employee

class EmployeeSerializer(serializers.ModelSerializer):
    class Meta:
        model = Employee
        fields = '__all__'

create your view in views.py

from rest_framework import viewsets
from hr.serializers import EmployeeSerializer
from hr.models import Employee

# Create your views here.
class EmployeeViewSet(viewsets.ModelViewSet):
    queryset = Employee.objects.all()
    serializer_class = EmployeeSerializer

urls settings

create urls.py under hr folder

from django.urls import path, include
from rest_framework.routers import DefaultRouter

from hr.views import EmployeeViewSet

router = DefaultRouter()
router.register('employees', EmployeeViewSet)

urlpatterns = [
    path('', include(router.urls)),
]

go to djswagger/urls.py add the urls from hr

from django.contrib import admin
from django.urls import path, include

urlpatterns = [
    path('admin/', admin.site.urls),
    path('api/', include('hr.urls')),
]

create the model in db

./manage.py makemigrations
./manage.py migrate

check everything runs fine

./manage.py runserver

goto url http:/localhost:8000/api

Install swagger support

https://github.com/axnsan12/drf-yasg

install

pip install drf-yasg

add to settings.py

INSTALLED_APPS = [
	...
    'rest_framework',
    'hr',
    'drf_yasg',
]

add urls

in urls.py add these

from rest_framework import permissions
from drf_yasg.views import get_schema_view
from drf_yasg import openapi


schema_view = get_schema_view(
   openapi.Info(
      title="Snippets API",
      default_version='v1',
      description="Test description",
      terms_of_service="https://www.google.com/policies/terms/",
      contact=openapi.Contact(email="[email protected]"),
      license=openapi.License(name="BSD License"),
   ),
   public=True,
   permission_classes=(permissions.AllowAny,),
)

urlpatterns = [
    ...
    url(r'^swagger(?P<format>\.json|\.yaml)$', schema_view.without_ui(cache_timeout=0), name='schema-json'),
    url(r'^swagger/$', schema_view.with_ui('swagger', cache_timeout=0), name='schema-swagger-ui'),
    url(r'^redoc/$', schema_view.with_ui('redoc', cache_timeout=0), name='schema-redoc'),
]

test

go to url http:/localhost:8000/swagger

Add authorization

install

add to settings.py

INSTALLED_APPS = [
	...
    'rest_framework.authtoken',
]

under djswagger create views

from rest_framework.authtoken.views import ObtainAuthToken
from rest_framework.generics import GenericAPIView

class TokenView(ObtainAuthToken, GenericAPIView):
    pass

under djswagger change urls

from djswagger.views import TokenView

urlpatterns = [
    ...
    path('api/token-auth/', TokenView.as_view()),
]

now the token-auth will appear in swagger in correct format

Adding Corapi documentation

in settings.py add

REST_FRAMEWORK = { 
    'DEFAULT_SCHEMA_CLASS': 'rest_framework.schemas.coreapi.AutoSchema' 
}

in urls.py

from rest_framework.documentation import include_docs_urls
...
path('api-docs/', include_docs_urls(title='Example.com API', description="All api details here")),

URLs

• http://localhost:8000/swagger for swagger
• http://localhost:8000/redoc for redoc
• http://localhost:8000/api-docs for coreapi