Solution

cinema/migrations/0002_actor_cinemahall_genre_movie_actors_movie_genres.py

@@ -0,0 +1,47 @@
+# Generated by Django 4.1 on 2024-10-23 16:10
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('cinema', '0001_initial'),
+    ]
+
+    operations = [
+        migrations.CreateModel(
+            name='Actor',
+            fields=[
+                ('id', models.BigAutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('first_name', models.CharField(max_length=255)),
+                ('last_name', models.CharField(max_length=255)),
+            ],
+        ),
+        migrations.CreateModel(
+            name='CinemaHall',
+            fields=[
+                ('id', models.BigAutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('name', models.CharField(max_length=255)),
+                ('rows', models.IntegerField()),
+                ('seats_in_row', models.IntegerField()),
+            ],
+        ),
+        migrations.CreateModel(
+            name='Genre',
+            fields=[
+                ('id', models.BigAutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('name', models.CharField(max_length=255, unique=True)),
+            ],
+        ),
+        migrations.AddField(
+            model_name='movie',
+            name='actors',
+            field=models.ManyToManyField(related_name='movies', to='cinema.actor'),
+        ),
+        migrations.AddField(
+            model_name='movie',
+            name='genres',
+            field=models.ManyToManyField(related_name='movies', to='cinema.genre'),
+        ),
+    ]

cinema/models.py

@@ -5,6 +5,29 @@ class Movie(models.Model):
     title = models.CharField(max_length=255)
     description = models.TextField()
     duration = models.IntegerField()
+    actors = models.ManyToManyField("Actor", related_name="movies")
+    genres = models.ManyToManyField("Genre", related_name="movies")
 
     def __str__(self):
         return self.title
+
+
+class Actor(models.Model):
+    first_name = models.CharField(max_length=255)
+    last_name = models.CharField(max_length=255)
+
+    def __str__(self):
+        return f"{self.first_name} {self.last_name}"
+
+
+class Genre(models.Model):
+    name = models.CharField(max_length=255, unique=True)
+
+    def __str__(self):
+        return self.name
+
+
+class CinemaHall(models.Model):
+    name = models.CharField(max_length=255)
+    rows = models.IntegerField()
+    seats_in_row = models.IntegerField()

cinema/serializers.py

@@ -1,24 +1,83 @@
 from rest_framework import serializers
 
-from cinema.models import Movie
+from cinema.models import Movie, Actor, Genre, CinemaHall
 
 
-class MovieSerializer(serializers.Serializer):
-    id = serializers.IntegerField(read_only=True)
-    title = serializers.CharField(max_length=255)
-    description = serializers.CharField()
-    duration = serializers.IntegerField()
+class MovieSerializer(serializers.ModelSerializer):
+    actors = serializers.PrimaryKeyRelatedField(many=True,
+                                                queryset=Actor.objects.all())
+    genres = serializers.PrimaryKeyRelatedField(many=True,
+                                                queryset=Genre.objects.all())
+
+    class Meta:
+        model = Movie
+        fields = ['id', 'title', "duration", "actors", "genres"]
 
     def create(self, validated_data):
-        return Movie.objects.create(**validated_data)
+        actors = validated_data.pop("actors")
+        genres = validated_data.pop("genres")
+        movies = Movie.objects.create(**validated_data)
+        movies.set(actors)
+        movies.set(genres)
+        return movies
 
     def update(self, instance, validated_data):
+        actors = validated_data.pop("actors")
+        genres = validated_data.pop("genres")
         instance.title = validated_data.get("title", instance.title)
         instance.description = validated_data.get(
             "description", instance.description
         )
         instance.duration = validated_data.get("duration", instance.duration)
+        instance.genres = validated_data.get("genres", instance.genres)
+        instance.save()
+        if actors is not None:
+            instance.actors.set(actors)
+        if genres is not None:
+            instance.genres.set(genres)
+        return instance
+
+
+class ActorSerializer(serializers.ModelSerializer):
+    class Meta:
+        model = Actor
+        fields = ["id", "first_name", "last_name"]
+
+    def create(self, validated_data):
+        return Actor.objects.create(**validated_data)
 
+    def update(self, instance, validated_data):
+        instance.first_name = validated_data.get("first_name", instance.first_name)
+        instance.last_name = validated_data.get("last_name", instance.last_name)
         instance.save()
+        return instance
 
+
+class GenreSerializer(serializers.ModelSerializer):
+    class Meta:
+        model = Genre
+        fields = ["id", "name"]
+
+    def create(self, validated_data):
+        return Genre.objects.create(**validated_data)
+
+    def update(self, instance, validated_data):
+        instance.name = validated_data.get("name", instance.name)
+        instance.save()
+        return instance
+
+
+class CinemaHallSerializer(serializers.ModelSerializer):
+    class Meta:
+        model = CinemaHall
+        fields = ["id", "name", "rows", "seats_in_row"]
+
+    def create(self, validated_data):
+        return CinemaHall.objects.create(**validated_data)
+
+    def update(self, instance, validated_data):
+        instance.name = validated_data.get("name", instance.name)
+        instance.rows = validated_data.get("rows", instance.rows)
+        instance.seats_in_row = validated_data.get("seats_in_row", instance.seats_in_row)
+        instance.save()
         return instance

cinema/urls.py

@@ -1,10 +1,38 @@
-from django.urls import path
+from django.urls import path, include
+from rest_framework import routers
 
-from cinema.views import movie_list, movie_detail
+from cinema.views import (GenreDetail,
+                          GenreList,
+                          ActorList,
+                          ActorDetail,
+                          CinemaHallViewSet,
+                          MovieViewSet)
+
+router = routers.DefaultRouter()
+
+router.register("movies", MovieViewSet)
+
+cinema_hall_list = CinemaHallViewSet.as_view(actions={
+    "get": "list",
+    "post": "create"
+})
+
+cinema_hall_detail = CinemaHallViewSet.as_view(actions={
+    "get": "retrieve",
+    "put": "partial_update",
+    "delete": "destroy"
+})
 
 urlpatterns = [
-    path("movies/", movie_list, name="movie-list"),
-    path("movies/<int:pk>/", movie_detail, name="movie-detail"),
+    path("genres/", GenreList.as_view(), name="genres-list"),
+    path("genres/<int:pk>/", GenreDetail.as_view(), name="genres-detail"),
+    path("actors/", ActorList.as_view(), name="actors-list"),
+    path("actors/<int:pk>/", ActorDetail.as_view(), name="actors-detail"),
+    path("cinemahalls/", cinema_hall_list, name="cinema-halls-list"),
+    path("cinemahalls/<int:pk>/", cinema_hall_detail, name="cinema-halls-detail"),
+    path("", include(router.urls)),
 ]
 
 app_name = "cinema"
+
+

cinema/views.py

@@ -1,45 +1,69 @@
-from rest_framework.decorators import api_view
 from rest_framework.response import Response
 from rest_framework import status
+from rest_framework import generics
+from rest_framework import viewsets, mixins
 
 from django.shortcuts import get_object_or_404
+from rest_framework.views import APIView
 
-from cinema.models import Movie
-from cinema.serializers import MovieSerializer
+from cinema.models import Movie, Genre, Actor, CinemaHall
+from cinema.serializers import MovieSerializer, GenreSerializer, ActorSerializer, CinemaHallSerializer
 
 
-@api_view(["GET", "POST"])
-def movie_list(request):
-    if request.method == "GET":
-        movies = Movie.objects.all()
-        serializer = MovieSerializer(movies, many=True)
+class GenreList(APIView):
+    def get(self, request) -> Response:
+        genres = Genre.objects.all()
+        serializer = GenreSerializer(genres, many=True)
         return Response(serializer.data, status=status.HTTP_200_OK)
 
-    if request.method == "POST":
-        serializer = MovieSerializer(data=request.data)
+    def post(self, request) -> Response:
+        serializer = GenreSerializer(data=request.data)
         if serializer.is_valid():
             serializer.save()
             return Response(serializer.data, status=status.HTTP_201_CREATED)
-
         return Response(serializer.errors, status=status.HTTP_400_BAD_REQUEST)
 
 
-@api_view(["GET", "PUT", "DELETE"])
-def movie_detail(request, pk):
-    movie = get_object_or_404(Movie, pk=pk)
 
-    if request.method == "GET":
-        serializer = MovieSerializer(movie)
+class GenreDetail(APIView):
+    def get_object(self, pk: int) -> Genre:
+        return get_object_or_404(Genre, pk)
+
+    def get(self, request, pk: int) -> Response:
+        serializer = GenreSerializer(self.get_object(pk))
         return Response(serializer.data, status=status.HTTP_200_OK)
 
-    if request.method == "PUT":
-        serializer = MovieSerializer(movie, data=request.data)
+    def put(self, request, pk: int) -> Response:
+        serializer = GenreSerializer(self.get_object(pk), data=request.data)
         if serializer.is_valid():
-            serializer.save()
             return Response(serializer.data, status=status.HTTP_200_OK)
+        return Response(serializer.data, status=status.HTTP_400_BAD_REQUEST)
 
-        return Response(serializer.errors, status=status.HTTP_400_BAD_REQUEST)
-
-    if request.method == "DELETE":
-        movie.delete()
+    def delete(self, request, pk: int) -> Response:
+        self.get_object(pk).delete()
         return Response(status=status.HTTP_204_NO_CONTENT)
+
+
+class ActorList(generics.ListCreateAPIView):
+    queryset = Actor.objects.all()
+    serializer_class = ActorSerializer
+
+
+class ActorDetail(generics.RetrieveUpdateDestroyAPIView):
+    queryset = Actor.objects.all()
+    serializer_class = ActorSerializer
+
+
+class CinemaHallViewSet(viewsets.GenericViewSet,
+                        mixins.ListModelMixin,
+                        mixins.CreateModelMixin,
+                        mixins.DestroyModelMixin,
+                        mixins.RetrieveModelMixin,
+                        mixins.UpdateModelMixin):
+    queryset = CinemaHall.objects.all()
+    serializer_class = CinemaHallSerializer
+
+
+class MovieViewSet(viewsets.ModelViewSet):
+    queryset = Movie.objects.all()
+    serializer_class = MovieSerializer