Solution

cinema/migrations/0002_actor_cinemahall_genre_movie_actors_movie_genres.py

@@ -0,0 +1,47 @@
+# Generated by Django 4.1 on 2024-11-05 15:47
+
+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=50)),
+                ('last_name', models.CharField(max_length=50)),
+            ],
+        ),
+        migrations.CreateModel(
+            name='CinemaHall',
+            fields=[
+                ('id', models.BigAutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('name', models.CharField(max_length=50)),
+                ('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=50, unique=True)),
+            ],
+        ),
+        migrations.AddField(
+            model_name='movie',
+            name='actors',
+            field=models.ManyToManyField(to='cinema.actor'),
+        ),
+        migrations.AddField(
+            model_name='movie',
+            name='genres',
+            field=models.ManyToManyField(to='cinema.genre'),
+        ),
+    ]

cinema/models.py

@@ -1,9 +1,35 @@
 from django.db import models
 
 
+class Actor(models.Model):
+    first_name = models.CharField(max_length=50)
+    last_name = models.CharField(max_length=50)
+
+    def __str__(self):
+        return f"{self.first_name} {self.last_name}"
+
+
+class Genre(models.Model):
+    name = models.CharField(max_length=50, unique=True)
+
+    def __str__(self):
+        return self.name
+
+
+class CinemaHall(models.Model):
+    name = models.CharField(max_length=50)
+    rows = models.IntegerField()
+    seats_in_row = models.IntegerField()
+
+    def __str__(self):
+        return self.name
+
+
 class Movie(models.Model):
     title = models.CharField(max_length=255)
     description = models.TextField()
+    actors = models.ManyToManyField(Actor)
+    genres = models.ManyToManyField(Genre)
     duration = models.IntegerField()
 
     def __str__(self):

cinema/serializers.py

@@ -1,16 +1,89 @@
 from rest_framework import serializers
+from rest_framework.validators import UniqueValidator
 
-from cinema.models import Movie
+from cinema.models import Movie, Genre, Actor, CinemaHall
+
+
+class GenreSerializer(serializers.Serializer):
+    id = serializers.IntegerField(read_only=True)
+    name = serializers.CharField(
+        max_length=50,
+        required=True,
+        validators=[UniqueValidator(queryset=Genre.objects.all())]
+    )
+
+    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 ActorSerializer(serializers.Serializer):
+    id = serializers.IntegerField(read_only=True)
+    first_name = serializers.CharField(max_length=50, required=True)
+    last_name = serializers.CharField(max_length=50, required=True)
+
+    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 CinemaHallSerializer(serializers.Serializer):
+    id = serializers.IntegerField(read_only=True)
+    name = serializers.CharField(max_length=50, required=True)
+    rows = serializers.IntegerField(required=True)
+    seats_in_row = serializers.IntegerField(required=True)
+
+    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
 
 
 class MovieSerializer(serializers.Serializer):
     id = serializers.IntegerField(read_only=True)
     title = serializers.CharField(max_length=255)
     description = serializers.CharField()
+    actors = serializers.PrimaryKeyRelatedField(many=True,
+                                                queryset=Actor.objects.all())
+    genres = serializers.PrimaryKeyRelatedField(many=True,
+                                                queryset=Genre.objects.all())
     duration = serializers.IntegerField()
 
+    class Meta:
+        model = Movie
+        fields = ["id",
+                  "title",
+                  "description",
+                  "duration",
+                  "actors",
+                  "genres"]
+
     def create(self, validated_data):
-        return Movie.objects.create(**validated_data)
+        actors_data = validated_data.pop("actors")
+        genres_data = validated_data.pop("genres")
+        movie = Movie.objects.create(**validated_data)
+
+        movie.actors.set(actors_data)
+        movie.genres.set(genres_data)
+
+        return movie
 
     def update(self, instance, validated_data):
         instance.title = validated_data.get("title", instance.title)

cinema/urls.py

@@ -1,10 +1,47 @@
-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 (
+    MovieViewSet,
+    GenreList,
+    GenreDetail,
+    ActorList,
+    ActorDetail,
+    CinemaHallViewSet
+)
+
+router = routers.DefaultRouter()
+router.register("movies", MovieViewSet, basename="movie-list")
+
+movie_list = MovieViewSet.as_view(
+    actions={"get": "list",
+             "post": "create"}
+)
+
+movie_detail = MovieViewSet.as_view(
+    actions={"get": "retrieve",
+             "put": "update",
+             "patch": "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="genre-list"),
+    path("genres/<int:pk>/", GenreDetail.as_view(), name="genre-detail"),
+    path("actors/", ActorList.as_view(), name="actor-list"),
+    path("actors/<int:pk>/", ActorDetail.as_view(), name="actor-detail"),
+    path("cinema_halls/", CinemaHallViewSet.as_view(
+        actions={"get": "list", "post": "create"}
+    ), name="cinema-hall-list"),
+    path("cinema_halls/<int:pk>/",
+         CinemaHallViewSet.as_view(
+             actions={"get": "retrieve",
+                      "put": "update",
+                      "patch": "partial_update",
+                      "delete": "destroy"}
+         ),
+         name="cinema-hall-detail"),
+    path("", include(router.urls)),
 ]
 
 app_name = "cinema"

cinema/views.py

@@ -1,45 +1,111 @@
-from rest_framework.decorators import api_view
 from rest_framework.response import Response
-from rest_framework import status
+from rest_framework import status, generics, mixins, viewsets
+from rest_framework.views import APIView
 
 from django.shortcuts import get_object_or_404
 
-from cinema.models import Movie
-from cinema.serializers import MovieSerializer
+from cinema.models import Movie, Actor, Genre, CinemaHall
+from cinema.serializers import (
+    MovieSerializer,
+    ActorSerializer,
+    GenreSerializer,
+    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)
+class GenreDetail(APIView):
+    def get_object(self, pk: int) -> Genre:
+        return get_object_or_404(Genre, pk=pk)
 
-    if request.method == "GET":
-        serializer = MovieSerializer(movie)
+    def get(self, request, pk: int) -> Response:
+        serializer = GenreSerializer(self.get_object(pk=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=pk),
+                                     data=request.data)
         if serializer.is_valid():
             serializer.save()
             return Response(serializer.data, status=status.HTTP_200_OK)
+        return Response(serializer.errors, status=status.HTTP_400_BAD_REQUEST)
 
+    def patch(self, request, pk: int) -> Response:
+        serializer = GenreSerializer(self.get_object(pk=pk),
+                                     data=request.data,
+                                     partial=True)
+        if serializer.is_valid():
+            serializer.save()
+            return Response(serializer.data, status=status.HTTP_200_OK)
         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=pk).delete()
         return Response(status=status.HTTP_204_NO_CONTENT)
+
+
+class ActorList(
+    generics.GenericAPIView,
+    mixins.CreateModelMixin,
+    mixins.ListModelMixin,
+):
+    queryset = Actor.objects.all()
+    serializer_class = ActorSerializer
+
+    def get(self, request, *args, **kwargs) -> Response:
+        return self.list(request, *args, **kwargs)
+
+    def post(self, request, *args, **kwargs) -> Response:
+        return self.create(request, *args, **kwargs)
+
+
+class ActorDetail(
+    generics.GenericAPIView,
+    mixins.RetrieveModelMixin,
+    mixins.UpdateModelMixin,
+    mixins.DestroyModelMixin,
+):
+    queryset = Actor.objects.all()
+    serializer_class = ActorSerializer
+
+    def get(self, request, *args, **kwargs) -> Response:
+        return self.retrieve(request, *args, **kwargs)
+
+    def put(self, request, *args, **kwargs) -> Response:
+        return self.update(request, *args, **kwargs)
+
+    def patch(self, request, *args, **kwargs) -> Response:
+        return self.partial_update(request, *args, **kwargs)
+
+    def delete(self, request, *args, **kwargs) -> Response:
+        return self.destroy(request, *args, **kwargs)
+
+
+class CinemaHallViewSet(
+    mixins.ListModelMixin,
+    mixins.CreateModelMixin,
+    mixins.RetrieveModelMixin,
+    mixins.UpdateModelMixin,
+    mixins.DestroyModelMixin,
+    viewsets.GenericViewSet
+):
+    queryset = CinemaHall.objects.all()
+    serializer_class = CinemaHallSerializer
+
+
+class MovieViewSet(viewsets.ModelViewSet):
+    queryset = Movie.objects.all()
+    serializer_class = MovieSerializer