Solution

cinema/migrations/0001_initial.py

@@ -1,4 +1,4 @@
-# Generated by Django 4.0.2 on 2022-05-03 13:41
+# Generated by Django 4.1 on 2026-05-15 09:53
 
 from django.db import migrations, models
 
@@ -7,24 +7,43 @@ class Migration(migrations.Migration):
 
     initial = True
 
-    dependencies = []
+    dependencies = [
+    ]
 
     operations = [
         migrations.CreateModel(
-            name="Movie",
+            name='Actor',
+            fields=[
+                ('id', models.BigAutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('first_name', models.CharField(max_length=64)),
+                ('last_name', models.CharField(max_length=64)),
+            ],
+        ),
+        migrations.CreateModel(
+            name='CinemaHall',
+            fields=[
+                ('id', models.BigAutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('name', models.CharField(max_length=64)),
+                ('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=256, unique=True)),
+            ],
+        ),
+        migrations.CreateModel(
+            name='Movie',
             fields=[
-                (
-                    "id",
-                    models.BigAutoField(
-                        auto_created=True,
-                        primary_key=True,
-                        serialize=False,
-                        verbose_name="ID",
-                    ),
-                ),
-                ("title", models.CharField(max_length=255)),
-                ("description", models.TextField()),
-                ("duration", models.IntegerField()),
+                ('id', models.BigAutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('title', models.CharField(max_length=255)),
+                ('description', models.TextField()),
+                ('duration', models.IntegerField()),
+                ('actors', models.ManyToManyField(related_name='movies', to='cinema.actor')),
+                ('genres', models.ManyToManyField(related_name='movies', to='cinema.genre')),
             ],
         ),
     ]

cinema/models.py

@@ -5,6 +5,23 @@ 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 Genre(models.Model):
+    name = models.CharField(max_length=256, unique=True)
+
+
+class Actor(models.Model):
+    first_name = models.CharField(max_length=64)
+    last_name = models.CharField(max_length=64)
+
+
+class CinemaHall(models.Model):
+    name = models.CharField(max_length=64)
+    rows = models.IntegerField()
+    seats_in_row = models.IntegerField()

cinema/serializers.py

@@ -1,18 +1,37 @@
 from rest_framework import serializers
 
-from cinema.models import Movie
+from cinema.models import Movie, Genre, Actor, CinemaHall
 
 
 class MovieSerializer(serializers.Serializer):
     id = serializers.IntegerField(read_only=True)
     title = serializers.CharField(max_length=255)
     description = serializers.CharField()
     duration = serializers.IntegerField()
+    actors = serializers.PrimaryKeyRelatedField(
+        many=True,
+        queryset=Actor.objects.all()
+    )
+    genres = serializers.PrimaryKeyRelatedField(
+        many=True,
+        queryset=Genre.objects.all()
+    )
 
     def create(self, validated_data):
-        return Movie.objects.create(**validated_data)
+        actors = validated_data.pop("actors")
+        genres = validated_data.pop("genres")
+
+        movie = Movie.objects.create(**validated_data)
+
+        movie.actors.set(actors)
+        movie.genres.set(genres)
+
+        return movie
 
     def update(self, instance, validated_data):
+        actors = validated_data.get("actors")
+        genres = validated_data.get("genres")
+
         instance.title = validated_data.get("title", instance.title)
         instance.description = validated_data.get(
             "description", instance.description
@@ -21,4 +40,60 @@ def update(self, instance, validated_data):
 
         instance.save()
 
+        if actors is not None:
+            instance.actors.set(actors)
+
+        if genres is not None:
+            instance.genres.set(genres)
+
+        return instance
+
+
+class GenreSerializer(serializers.Serializer):
+    id = serializers.IntegerField(read_only=True)
+    name = serializers.CharField(max_length=256)
+
+    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=64)
+    last_name = serializers.CharField(max_length=64)
+
+    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=64)
+    rows = serializers.IntegerField()
+    seats_in_row = serializers.IntegerField()
+
+    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 +1,40 @@
-from django.urls import path
+from django.urls import path, include
 
-from cinema.views import movie_list, movie_detail
+from cinema.views import GenreList, GenreDetail
+from cinema.views import ActorList, ActorDetail
+from cinema.views import CinemaHallViewSet
+from cinema.views import MovieViewSet
+
+from rest_framework.routers import DefaultRouter
+
+cinema_hall_list = CinemaHallViewSet.as_view(
+    {"get": "list",
+     "post": "create",
+     }
+)
+cinema_hall_detail = CinemaHallViewSet.as_view(
+    {"get": "retrieve",
+     "put": "update",
+     "patch": "partial_update",
+     "delete": "destroy"}
+)
+
+router = DefaultRouter()
+router.register("movies", MovieViewSet)
 
 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/", cinema_hall_list, name="cinema-hall-list"),
+    path(
+        "cinema_halls/<int:pk>/",
+        cinema_hall_detail,
+        name="cinema-hall-detail"
+    ),
+    path("", include(router.urls))
+
 ]
 
 app_name = "cinema"

cinema/views.py

@@ -1,45 +1,114 @@
-from rest_framework.decorators import api_view
 from rest_framework.response import Response
 from rest_framework import status
 
 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)
 
+from rest_framework.views import APIView
+from rest_framework.generics import (GenericAPIView,
+                                     ListCreateAPIView,
+                                     RetrieveUpdateDestroyAPIView)
+from rest_framework.mixins import (ListModelMixin,
+                                   CreateModelMixin,
+                                   RetrieveModelMixin,
+                                   UpdateModelMixin,
+                                   DestroyModelMixin)
+from rest_framework.viewsets import GenericViewSet
+from rest_framework.viewsets import ModelViewSet
 
-@api_view(["GET", "POST"])
-def movie_list(request):
-    if request.method == "GET":
-        movies = Movie.objects.all()
-        serializer = MovieSerializer(movies, many=True)
-        return Response(serializer.data, status=status.HTTP_200_OK)
 
-    if request.method == "POST":
-        serializer = MovieSerializer(data=request.data)
-        if serializer.is_valid():
-            serializer.save()
-            return Response(serializer.data, status=status.HTTP_201_CREATED)
+class GenreList(APIView):
+    def get(self, request, *args, **kwargs):
+        genres = Genre.objects.prefetch_related("movies")
+        serializer = GenreSerializer(genres, many=True)
+        return Response(serializer.data)
 
-        return Response(serializer.errors, status=status.HTTP_400_BAD_REQUEST)
+    def post(self, request, *args, **kwargs):
+        serializers = GenreSerializer(data=request.data)
+        if serializers.is_valid():
+            serializers.save()
+            return Response(serializers.data, status=status.HTTP_201_CREATED)
+        return Response(serializers.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):
 
-    if request.method == "GET":
-        serializer = MovieSerializer(movie)
-        return Response(serializer.data, status=status.HTTP_200_OK)
+    def get_object(self, pk):
+        return get_object_or_404(Genre, pk=pk)
 
-    if request.method == "PUT":
-        serializer = MovieSerializer(movie, data=request.data)
+    def get(self, request, *args, **kwargs):
+        genre = self.get_object(kwargs.get("pk"))
+        serializer = GenreSerializer(genre)
+        return Response(serializer.data)
+
+    def put(self, request, *args, **kwargs):
+        genre = self.get_object(kwargs.get("pk"))
+        serializer = GenreSerializer(genre, data=request.data)
         if serializer.is_valid():
             serializer.save()
-            return Response(serializer.data, status=status.HTTP_200_OK)
+            return Response(serializer.data)
+        return Response(serializer.errors, status=status.HTTP_400_BAD_REQUEST)
 
+    def patch(self, request, *args, **kwargs):
+        genre = self.get_object(kwargs.get("pk"))
+        serializer = GenreSerializer(genre, data=request.data, partial=True)
+        if serializer.is_valid():
+            serializer.save()
+            return Response(serializer.data)
         return Response(serializer.errors, status=status.HTTP_400_BAD_REQUEST)
 
-    if request.method == "DELETE":
-        movie.delete()
+    def delete(self, request, *args, **kwargs):
+        genre = self.get_object(kwargs.get("pk"))
+        genre.delete()
         return Response(status=status.HTTP_204_NO_CONTENT)
+
+
+class ActorList(GenericAPIView,
+                ListModelMixin,
+                CreateModelMixin):
+    queryset = Actor.objects.prefetch_related("movies")
+    serializer_class = ActorSerializer
+
+    def get(self, request, *args, **kwargs):
+        return self.list(request, *args, **kwargs)
+
+    def post(self, request, *args, **kwargs):
+        return self.create(request, *args, **kwargs)
+
+
+class ActorDetail(GenericAPIView,
+                  RetrieveModelMixin,
+                  UpdateModelMixin,
+                  DestroyModelMixin):
+    queryset = Actor.objects.prefetch_related("movies")
+    serializer_class = ActorSerializer
+
+    def get(self, request, *args, **kwargs):
+        return self.retrieve(request, *args, **kwargs)
+
+    def put(self, request, *args, **kwargs):
+        return self.update(request, *args, **kwargs)
+
+    def patch(self, request, *args, **kwargs):
+        return self.partial_update(request, *args, **kwargs)
+
+    def delete(self, request, *args, **kwargs):
+        return self.destroy(request, *args, **kwargs)
+
+
+class CinemaHallViewSet(GenericViewSet,
+                        ListCreateAPIView,
+                        RetrieveUpdateDestroyAPIView):
+    queryset = CinemaHall.objects.all()
+    serializer_class = CinemaHallSerializer
+
+
+class MovieViewSet(ModelViewSet):
+    queryset = Movie.objects.all().prefetch_related("actors", "genres")
+    serializer_class = MovieSerializer