Solution

cinema/models.py

@@ -1,10 +1,45 @@
 from django.db import models
 
 
+class Genre(models.Model):
+    name = models.CharField(max_length=255, unique=True)
+
+    def __str__(self) -> str:
+        return self.name
+
+
+class Actor(models.Model):
+    first_name = models.CharField(max_length=255)
+    last_name = models.CharField(max_length=255)
+
+    def __str__(self) -> str:
+        return f"{self.first_name} {self.last_name}"
+
+
 class Movie(models.Model):
     title = models.CharField(max_length=255)
     description = models.TextField()
     duration = models.IntegerField()
+    actors = models.ManyToManyField(to=Actor, related_name="movies")
+    genre = models.ManyToManyField(to=Genre, related_name="movies")
+
+    class Meta:
+        indexes = [
+            models.Index(fields=["title"]),
+        ]
 
     def __str__(self):
         return self.title
+
+
+class CinemaHall(models.Model):
+    name = models.CharField(max_length=255)
+    rows = models.IntegerField()
+    seats_in_row = models.IntegerField()
+
+    @property
+    def capacity(self) -> int:
+        return self.rows * self.seats_in_row
+
+    def __str__(self) -> str:
+        return self.name

cinema/serializers.py

@@ -1,24 +1,36 @@
 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 ActorSerializer(serializers.ModelSerializer):
+    class Meta:
+        model = Actor
+        fields = "__all__"
 
-    def create(self, validated_data):
-        return Movie.objects.create(**validated_data)
 
-    def update(self, instance, validated_data):
-        instance.title = validated_data.get("title", instance.title)
-        instance.description = validated_data.get(
-            "description", instance.description
-        )
-        instance.duration = validated_data.get("duration", instance.duration)
+class GenreSerializer(serializers.ModelSerializer):
+    class Meta:
+        model = Genre
+        fields = "__all__"
 
-        instance.save()
 
-        return instance
+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 = "__all__"
+
+
+class CinemaHallSerializer(serializers.ModelSerializer):
+    class Meta:
+        model = CinemaHall
+        fields = "__all__"

cinema/urls.py

@@ -1,10 +1,48 @@
-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 (
+    CinemaHallViewSet,
+    ActorList,
+    ActorDetail,
+    GenreList,
+    GenreDetail,
+    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(prefix="movies", viewset=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 +1,112 @@
 from rest_framework.decorators import api_view
 from rest_framework.response import Response
 from rest_framework import status
+from rest_framework.views import APIView
+from rest_framework import generics, mixins
+from rest_framework import viewsets
 
 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 (
+    GenreSerializer,
+    ActorSerializer,
+    CinemaHallSerializer,
+    MovieSerializer
+)
 
 
-@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)
+class GenreList(APIView):
+    def get(self, request) -> Response:
+        genres = Genre.objects.all()
+        serializer = GenreSerializer(genres, many=True)
+        return Response(serializer.data)
 
-    if request.method == "POST":
-        serializer = MovieSerializer(data=request.data)
-        if serializer.is_valid():
-            serializer.save()
-            return Response(serializer.data, status=status.HTTP_201_CREATED)
+    def post(self, request) -> Response:
+        serializer = GenreSerializer(data=request.data)
+        serializer.is_valid(raise_exception=True)
+        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):
+        return get_object_or_404(Genre, pk=pk)
 
-@api_view(["GET", "PUT", "DELETE"])
-def movie_detail(request, pk):
-    movie = get_object_or_404(Movie, pk=pk)
+    def get(self, request, pk) -> Response:
+        genre = self.get_object(pk)
+        serializer = GenreSerializer(genre)
+        return Response(serializer.data)
 
-    if request.method == "GET":
-        serializer = MovieSerializer(movie)
-        return Response(serializer.data, status=status.HTTP_200_OK)
+    def put(self, request, pk) -> 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 == "PUT":
-        serializer = MovieSerializer(movie, data=request.data)
-        if serializer.is_valid():
-            serializer.save()
-            return Response(serializer.data, status=status.HTTP_200_OK)
+    def patch(self, request, pk) -> 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)
 
-        return Response(serializer.errors, status=status.HTTP_400_BAD_REQUEST)
-
-    if request.method == "DELETE":
-        movie.delete()
+    def delete(self, request, pk) -> Response:
+        genre = self.get_object(pk)
+        genre.delete()
         return Response(status=status.HTTP_204_NO_CONTENT)
+
+
+class ActorList(
+    generics.GenericAPIView,
+    mixins.ListModelMixin,
+    mixins.CreateModelMixin
+):
+    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(
+    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