Solution

.gitignore

@@ -7,4 +7,4 @@ venv/
 .pytest_cache/
 **__pycache__/
 *.pyc
-db.sqlite3
+db.sqlite3

cinema/models.py

@@ -1,10 +1,33 @@
 from django.db import models
 
 
+class Actor(models.Model):
+    first_name = models.CharField(max_length=255)
+    last_name = models.CharField(max_length=255)
+
+    def __str__(self):
+        return 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.PositiveSmallIntegerField()
+    seats_in_row = models.PositiveSmallIntegerField()
+
+
 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

cinema/serializers.py

@@ -1,6 +1,6 @@
 from rest_framework import serializers
 
-from cinema.models import Movie
+from .models import Movie, Genre, CinemaHall
 
 
 class MovieSerializer(serializers.Serializer):
@@ -22,3 +22,56 @@ def update(self, instance, validated_data):
         instance.save()
 
         return instance
+
+
+class GenreSerializer(serializers.Serializer):
+    name = serializers.CharField()
+
+    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):
+    first_name = serializers.CharField()
+    last_name = serializers.CharField()
+
+    def create(self, validated_data):
+        return Genre.objects.create(**validated_data)
+
+    def update(self, instance, validated_data):
+        instance.first_name = validated_data.get(
+            "first_name",
+            instance.first_name
+        )
+
+        instance.save()
+
+        return instance
+
+
+class CinemaHallSerializer(serializers.Serializer):
+    name = serializers.CharField()
+    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 +1,43 @@
-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 (
+    GenreList,
+    GenreDetail,
+    ActorList,
+    ActorDetail,
+    MovieViewSet,
+    CinemaHallViewSet,
+)
+
+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": "update",
+    "patch": "partial_update",
+    "delete": "destroy",
+})
 
 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 +1,88 @@
-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 django.shortcuts import get_object_or_404
+from rest_framework.views import APIView
 
-from cinema.models import Movie
-from cinema.serializers import MovieSerializer
+from .models import Movie, Genre, Actor, CinemaHall
+from .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 MovieViewSet(viewsets.ModelViewSet):
+    queryset = Movie.objects.all()
+    serializer_class = MovieSerializer
+
+
+class GenreList(APIView):
+    def get(self, request):
+        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):
+        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):
+        return get_object_or_404(Genre, pk=pk)
 
-    if request.method == "GET":
-        serializer = MovieSerializer(movie)
+    def get(self, request, pk):
+        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):
+        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.errors, status=status.HTTP_400_BAD_REQUEST)
+
+    def patch(self, request, pk):
+        serializer = GenreSerializer(
+            self.get_object(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):
+        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(
+    mixins.ListModelMixin,
+    mixins.CreateModelMixin,
+    mixins.UpdateModelMixin,
+    mixins.RetrieveModelMixin,
+    mixins.DestroyModelMixin,
+    viewsets.GenericViewSet
+):
+    queryset = CinemaHall.objects.all()
+    serializer_class = CinemaHallSerializer