Solution

cinema/migrations/0002_actor_cinemahall_genre_movie_actors_movie_genres.py

@@ -0,0 +1,71 @@
+# Generated by Django 4.1 on 2024-09-27 10:32
+
+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(to="cinema.actor"),
+        ),
+        migrations.AddField(
+            model_name="movie",
+            name="genres",
+            field=models.ManyToManyField(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()
+    genres = models.ManyToManyField("Genre", related_name="movies")
+    actors = models.ManyToManyField("Actor", related_name="movies")
 
-    def __str__(self):
+    def __str__(self) -> str:
         return self.title
+
+
+class Actor(models.Model):
+    first_name = models.CharField(max_length=255)
+    last_name = models.CharField(max_length=255)
+
+
+class Genre(models.Model):
+    name = models.CharField(max_length=255, unique=True)
+
+
+class CinemaHall(models.Model):
+    name = models.CharField(max_length=255)
+    rows = models.IntegerField()
+    seats_in_row = models.IntegerField()

cinema/serializers.py

@@ -1,24 +1,93 @@
+# flake8: noqa: E501
+
 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()
+    genres = serializers.SerializerMethodField()
+    actors = serializers.SerializerMethodField()
 
-    def create(self, validated_data):
-        return Movie.objects.create(**validated_data)
+    def create(self, validated_data: dict) -> Movie:
+        movie = Movie.objects.create(**validated_data)
+        self.set_genres_and_actors(movie)
+        return movie
 
-    def update(self, instance, validated_data):
+    def update(self, instance: Movie, validated_data: dict) -> Movie:
         instance.title = validated_data.get("title", instance.title)
-        instance.description = validated_data.get(
-            "description", instance.description
-        )
+        instance.description = validated_data.get("description", instance.description)
         instance.duration = validated_data.get("duration", instance.duration)
+        instance.save()
+
+        self.set_genres_and_actors(instance)
+        return instance
+
+    def set_genres_and_actors(self, movie: Movie) -> None:
+        genres_data = self.context["request"].data.get("genres", [])
+        actors_data = self.context["request"].data.get("actors", [])
+
+        movie.genres.set(genres_data)
+        movie.actors.set(actors_data)
+
+    def get_genres(self, movie: Movie) -> list:
+        return [genre.id for genre in movie.genres.all()]
+
+    def get_actors(self, movie: Movie) -> list:
+        return [actor.id for actor in movie.actors.all()]
+
+
+class ActorSerializer(serializers.Serializer):
+    id = serializers.IntegerField(read_only=True)
+    first_name = serializers.CharField(max_length=255)
+    last_name = serializers.CharField(max_length=255)
+
+    def create(self, validated_data: dict) -> Actor:
+        return Actor.objects.create(**validated_data)
+
+    def update(self, instance: Movie, validated_data: dict) -> Actor:
+        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.Serializer):
+    id = serializers.IntegerField(read_only=True)
+    name = serializers.CharField(max_length=255)
+
+    def validate_name(self, name: str) -> str:
+        if name and Genre.objects.filter(name=name).exists():
+            raise serializers.ValidationError("Genre with this name already exists")
+        return name
+
+    def create(self, validated_data: dict) -> Genre:
+        return Genre.objects.create(**validated_data)
 
+    def update(self, instance: Genre, validated_data: dict) -> Genre:
+        instance.name = validated_data.get("name", instance.name)
         instance.save()
+        return instance
+
+
+class CinemaHallSerializer(serializers.Serializer):
+    id = serializers.IntegerField(read_only=True)
+    name = serializers.CharField(max_length=255)
+    rows = serializers.IntegerField()
+    seats_in_row = serializers.IntegerField()
 
+    def create(self, validated_data: dict) -> CinemaHall:
+        return CinemaHall.objects.create(**validated_data)
+
+    def update(self, instance: CinemaHall, validated_data: dict) -> CinemaHall:
+        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
+# flake8: noqa: E501
 
-from cinema.views import movie_list, movie_detail
+from django.urls import path, include
+
+from rest_framework import routers
+
+from cinema.views import (
+    GenreList,
+    GenreDetail,
+    ActorList,
+    ActorDetail,
+    CinemaHallViewSet,
+    MovieViewSet,
+)
+cinema_hall_list = CinemaHallViewSet.as_view(actions={"get": "list", "post": "create"})
+
+cinema_hall_detail = CinemaHallViewSet.as_view(
+    actions={
+        "get": "retrieve",
+        "put": "update",
+        "patch": "partial_update",
+        "delete": "destroy",
+    }
+)
+
+router = routers.DefaultRouter()
+
+router.register("movies", MovieViewSet)
 
 urlpatterns = [
-    path("movies/", movie_list, name="movie-list"),
-    path("movies/<int:pk>/", movie_detail, name="movie-detail"),
+    path("", include(router.urls)),
+    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"),
 ]
 
 app_name = "cinema"

cinema/views.py

@@ -1,45 +1,109 @@
-from rest_framework.decorators import api_view
+from rest_framework import status, generics, mixins, viewsets
+from rest_framework.generics import get_object_or_404
+from rest_framework.request import Request
 from rest_framework.response import Response
-from rest_framework import status
+from rest_framework.views import APIView
 
-from django.shortcuts import get_object_or_404
+from cinema.models import Genre, Actor, CinemaHall, Movie
+from cinema.serializers import (
+    GenreSerializer,
+    ActorSerializer,
+    CinemaHallSerializer,
+    MovieSerializer,
+)
 
-from cinema.models import Movie
-from cinema.serializers import MovieSerializer
 
+class GenreList(APIView):
+    def get(self, request: Request, *args, **kwargs) -> Response:
+        genre = Genre.objects.all()
+        serializer = GenreSerializer(genre, many=True)
+        return Response(serializer.data)
 
-@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)
+    def post(self, request: Request, *args, **kwargs) -> Response:
+        serializer = GenreSerializer(data=request.data)
+        serializer.is_valid(raise_exception=True)
+        serializer.save()
+        return Response(serializer.data, status=status.HTTP_201_CREATED)
 
-    if request.method == "POST":
-        serializer = MovieSerializer(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)
+class GenreDetail(APIView):
+    def get_object(self, pk: int) -> Genre:
+        return get_object_or_404(Genre, pk=pk)
 
+    def get(self, request: Request, pk: int, *args, **kwargs) -> Response:
+        genre = self.get_object(pk)
+        serializer = GenreSerializer(genre)
+        return Response(serializer.data)
 
-@api_view(["GET", "PUT", "DELETE"])
-def movie_detail(request, pk):
-    movie = get_object_or_404(Movie, pk=pk)
+    def put(self, request: Request, pk: int, *args, **kwargs) -> Response:
+        genre = self.get_object(pk)
+        serializer = GenreSerializer(genre, data=request.data)
+        serializer.is_valid(raise_exception=True)
+        serializer.save()
+        return Response(serializer.data)
 
-    if request.method == "GET":
-        serializer = MovieSerializer(movie)
-        return Response(serializer.data, status=status.HTTP_200_OK)
+    def patch(self, request: Request, pk: int, *args, **kwargs) -> Response:
+        genre = self.get_object(pk)
+        serializer = GenreSerializer(genre, data=request.data, partial=True)
+        serializer.is_valid(raise_exception=True)
+        serializer.save()
+        return Response(serializer.data)
 
-    if request.method == "PUT":
-        serializer = MovieSerializer(movie, data=request.data)
-        if serializer.is_valid():
-            serializer.save()
-            return Response(serializer.data, status=status.HTTP_200_OK)
+    def delete(self, request: Request, pk: int, *args, **kwargs) -> Response:
+        genre = self.get_object(pk)
+        genre.delete()
+        return Response(status=status.HTTP_204_NO_CONTENT)
 
-        return Response(serializer.errors, status=status.HTTP_400_BAD_REQUEST)
 
-    if request.method == "DELETE":
-        movie.delete()
-        return Response(status=status.HTTP_204_NO_CONTENT)
+class ActorList(
+    mixins.ListModelMixin,
+    mixins.CreateModelMixin,
+    generics.GenericAPIView
+):
+    queryset = Actor.objects.all()
+    serializer_class = ActorSerializer
+
+    def get(self, request: Request, *args, **kwargs) -> Response:
+        return self.list(request, *args, **kwargs)
+
+    def post(self, request: Request, *args, **kwargs) -> Response:
+        return self.create(request, *args, **kwargs)
+
+
+class ActorDetail(
+    mixins.RetrieveModelMixin,
+    mixins.UpdateModelMixin,
+    mixins.DestroyModelMixin,
+    generics.GenericAPIView,
+):
+    queryset = Actor.objects.all()
+    serializer_class = ActorSerializer
+
+    def get(self, request: Request, *args, **kwargs) -> Response:
+        return self.retrieve(request, *args, **kwargs)
+
+    def put(self, request: Request, *args, **kwargs) -> Response:
+        return self.update(request, *args, **kwargs)
+
+    def patch(self, request: Request, *args, **kwargs) -> Response:
+        return self.partial_update(request, *args, **kwargs)
+
+    def delete(self, request: Request, *args, **kwargs) -> Response:
+        return self.destroy(request, *args, **kwargs)
+
+
+class CinemaHallViewSet(
+    viewsets.GenericViewSet,
+    mixins.ListModelMixin,
+    mixins.CreateModelMixin,
+    mixins.RetrieveModelMixin,
+    mixins.UpdateModelMixin,
+    mixins.DestroyModelMixin,
+):
+    queryset = CinemaHall.objects.all()
+    serializer_class = CinemaHallSerializer
+
+
+class MovieViewSet(viewsets.ModelViewSet):
+    queryset = Movie.objects.all()
+    serializer_class = MovieSerializer