cd backend
python ../manage.py startapp video
cd ..
Edite settings.py
INSTALLED_APPS = [
...
'backend.video',
]Edite video/apps.py
# video/apps.py
name = 'backend.video'Edite video/models.py
# video/models.py
from django.db import models
class Video(models.Model):
title = models.CharField('título', max_length=50, unique=True)
release_year = models.PositiveIntegerField('lançamento', null=True, blank=True)
class Meta:
ordering = ('id',)
verbose_name = 'filme'
verbose_name_plural = 'filmes'
def __str__(self):
return f'{self.title}'
def to_dict(self):
return {
'id': self.id,
'title': self.title,
'release_year': self.release_year,
}Edite video/admin.py
# video/admin.py
from django.contrib import admin
from .models import Video
@admin.register(Video)
class VideoAdmin(admin.ModelAdmin):
list_display = ('__str__', 'release_year')
search_fields = ('title',)python manage.py makemigrations
python manage.py migrate
Edite video/forms.py
# video/forms.py
from django import forms
from .models import Video
class VideoForm(forms.ModelForm):
class Meta:
model = Video
fields = ('title', 'release_year')Edite video/views.py
import json
from django.http import JsonResponse
from django.shortcuts import get_object_or_404
from django.views.decorators.csrf import csrf_exempt
from .forms import VideoForm
from .models import Video
@csrf_exempt
def videos(request):
'''
Lista ou cria videos.
'''
videos = Video.objects.all()
data = [video.to_dict() for video in videos]
form = VideoForm(request.POST or None)
if request.method == 'POST':
if request.POST:
# Dados obtidos pelo formulário.
if form.is_valid():
video = form.save()
elif request.body:
# Dados obtidos via json.
data = json.loads(request.body)
video = Video.objects.create(**data)
else:
return JsonResponse({'message': 'Algo deu errado.'})
return JsonResponse({'data': video.to_dict()})
return JsonResponse({'data': data})
@csrf_exempt
def video(request, pk):
'''
Mostra os detalhes, edita ou deleta um video.
'''
video = get_object_or_404(Video, pk=pk)
form = VideoForm(request.POST or None, instance=video)
if request.method == 'GET':
data = video.to_dict()
return JsonResponse({'data': data})
if request.method == 'POST':
if request.POST:
# Dados obtidos pelo formulário.
if form.is_valid():
video = form.save()
elif request.body:
# Dados obtidos via json.
data = json.loads(request.body)
for attr, value in data.items():
setattr(video, attr, value)
video.save()
else:
return JsonResponse({'message': 'Algo deu errado.'})
return JsonResponse({'data': video.to_dict()})
if request.method == 'DELETE':
video.delete()
return JsonResponse({'data': 'Item deletado com sucesso.'})Edite video/urls.py
# video/urls.py
from django.urls import include, path
from backend.video import views as v
app_name = 'video'
v1_urlpatterns = [
path('videos/', v.videos, name='videos'),
path('videos/<int:pk>/', v.video, name='video'),
]
urlpatterns = [
path('api/v1/', include(v1_urlpatterns)),
]Edite backend/urls.py
# backend/urls.py
urlpatterns = [
...
path('', include('backend.video.urls', namespace='video')),
]Edite nav.html
<!-- nav.html -->
<li class="nav-item">
<a class="nav-link" href="{\% url 'video:videos' %}">API V1 Video</a>
</li>Obs: O correto é href="{\% (chave porcentagem), mas coloquei a barra invertida por causa do Jekyll.
Edite video/tests.py
# video/tests.py
import json
from django.test import TestCase
from .models import Video
class VideoTest(TestCase):
def setUp(self):
self.payload = {
"title": "Matrix",
"release_year": 1999
}
def test_video_create(self):
response = self.client.post(
'/api/v1/videos/',
data=self.payload,
content_type='application/json'
)
resultado = json.loads(response.content)
esperado = {
"data": {
"id": 1,
**self.payload
}
}
self.assertEqual(esperado, resultado)
def test_video_list(self):
Video.objects.create(**self.payload)
response = self.client.get(
'/api/v1/videos/',
content_type='application/json'
)
resultado = json.loads(response.content)
esperado = {
"data": [
{
"id": 1,
**self.payload
}
]
}
self.assertEqual(esperado, resultado)
def test_video_detail(self):
Video.objects.create(**self.payload)
response = self.client.get(
'/api/v1/videos/1/',
content_type='application/json'
)
resultado = json.loads(response.content)
esperado = {
"data": {
"id": 1,
**self.payload
}
}
self.assertEqual(esperado, resultado)
def test_video_update(self):
Video.objects.create(**self.payload)
data = {
"title": "Matrix 2"
}
response = self.client.post(
'/api/v1/videos/1/',
data=data,
content_type='application/json'
)
resultado = json.loads(response.content)
esperado = {
"data":
{
"id": 1,
"title": "Matrix 2",
"release_year": 1999
}
}
self.assertEqual(esperado, resultado)
def test_video_delete(self):
Video.objects.create(**self.payload)
response = self.client.delete(
'/api/v1/videos/1/',
content_type='application/json'
)
resultado = json.loads(response.content)
esperado = {"data": "Item deletado com sucesso."}
self.assertEqual(esperado, resultado)