django-admin startproject inder
cd inder
django-admin startapp api
python manage.py migrate
python manage.py createsuperuser --email admin@example.com --username admin

#models.py

from django.db import models

class Sport(models.Model):
    name = models.CharField(max_length=60)
    alias = models.CharField(max_length=60)
    def __str__(self):
        return self.name

class Athlete(models.Model):
    name = models.CharField(max_length=60)
    last_name = models.CharField(max_length=60)
    age = models.IntegerField()
    sport = models.ForeignKey(Sport, on_delete=models.CASCADE)
    def __str__(self):
        return self.name + self.last_name

#serializers.py

from rest_framework import serializers

from .models import Sport, Athlete

class SportSerializer(serializers.HyperlinkedModelSerializer):
    class Meta:
        model = Sport
        fields = ('name', 'alias')

class AthleteSerializer(serializers.HyperlinkedModelSerializer):
    class Meta:
        model = Athlete
        fields = ('name', 'last_name', 'age', 'sport')

# views.py

from rest_framework import viewsets
from django_filters.rest_framework import DjangoFilterBackend

from .serializers import SportSerializer, AthleteSerializer
from .models import Sport, Athlete


class SportViewSet(viewsets.ModelViewSet):
    queryset = Sport.objects.all().order_by('name')
    serializer_class = SportSerializer
    filter_backends = [DjangoFilterBackend]
    filterset_fields = ['name']

class AthleteViewSet(viewsets.ModelViewSet):
    queryset = Athlete.objects.all().order_by('name')
    serializer_class = AthleteSerializer
    filter_backends = [DjangoFilterBackend]
    filterset_fields = ['name']

# inder/urls.py

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

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

# api/urls.py

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

router = routers.DefaultRouter()
router.register(r'sports', views.SportViewSet)
router.register(r'athletes', views.AthleteViewSet)

urlpatterns = [
    path('', include(router.urls)),
    path('api-auth/', include('rest_framework.urls', namespace='rest_framework'))
]

# inder/settings.py

...

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



REST_FRAMEWORK = {
    'DEFAULT_PAGINATION_CLASS': 'rest_framework.pagination.LimitOffsetPagination',
    'PAGE_SIZE': 10,
    'DEFAULT_FILTER_BACKENDS': ['django_filters.rest_framework.DjangoFilterBackend']
}

pip install markdown

# views.py

class SportViewSet(viewsets.ModelViewSet):
    """
    Deportes que se gestionan en la **aplicación**.

    Escrita en markdowan y se se puede ampliar más. 
    Leer [Documenting your API](https://www.django-rest-framework.org/topics/documenting-your-api/).
    """

    queryset = Sport.objects.all().order_by('name')
    ...

# api/test/tests_sport.py
class SportTestCase(TestCase):
    def setUp(self):
        self.access_token = result['access_token']
        self.user = user

    def test_create_sport(self):
        client = APIClient()

        test_sport = {
            'name': 'taekwondo',
            'alias': 'tw2'
        }

        response = client.post(
            '/api/sports/',
            test_sport,
            format='json'
        )

        result = json.loads(response.content)
        self.assertEqual(response.status_code, status.HTTP_201_CREATED)
        self.assertIn('name', result)

        self.assertEqual(result, test_sport)

   

./manage.py test api

/var/app/src # ./manage.py test api 
Creating test database for alias 'default'...
System check identified no issues (0 silenced).
...
----------------------------------------------------------------------
Ran 3 tests in 0.018s

OK
Destroying test database for alias 'default'...

/var/app/src # ./manage.py test api 
Creating test database for alias 'default'...
System check identified no issues (0 silenced).
E.E
======================================================================
ERROR: test_create_sport (api.test.tests_sport.SportTestCase)
----------------------------------------------------------------------
Traceback (most recent call last):
  File "/var/app/src/api/test/tests_sport.py", line 33, in test_create_sport