Solution

cinema/models.py

@@ -1,10 +1,36 @@
 from django.db import models
 
 
+class Actor(models.Model):
+    first_name = models.CharField(max_length=63)
+    last_name = models.CharField(max_length=63)
+
+    def __str__(self):
+        return f"{self.first_name} {self.last_name}"
+
+
+class Genre(models.Model):
+    name = models.CharField(max_length=255)
+
+    def __str__(self):
+        return self.name
+
+
+class CinemaHall(models.Model):
+    name = models.CharField(max_length=255)
+    rows = models.PositiveIntegerField()
+    seats_in_row = models.PositiveIntegerField()
+
+    def __str__(self):
+        return self.name
+
+
 class Movie(models.Model):
     title = models.CharField(max_length=255)
     description = models.TextField()
-    duration = models.IntegerField()
+    duration = models.PositiveIntegerField()
+    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 cinema.models import Movie, Genre, Actor, CinemaHall
 
 
 class MovieSerializer(serializers.Serializer):
@@ -14,11 +14,54 @@ def create(self, 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.description = validated_data.get("description", instance.description)
         instance.duration = validated_data.get("duration", instance.duration)
 
         instance.save()
 
         return instance
+
+
+class GenreSerializer(serializers.Serializer):
+    id = serializers.IntegerField(read_only=True)
+    name = serializers.CharField(max_length=255)
+
+    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=63)
+    last_name = serializers.CharField(max_length=63)
+
+    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=255)
+    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 +1,25 @@
-from django.urls import path
+from django.urls import path, include
+from rest_framework.routers import DefaultRouter
 
-from cinema.views import movie_list, movie_detail
+from cinema.views import (
+    GenreList,
+    GenreDetail,
+    ActorList,
+    ActorDetail,
+    MovieViewSet,
+    CinemaHallViewSet
+)
+
+router = DefaultRouter()
+router.register(r"movies", MovieViewSet)
+router.register(r"cinema_halls", CinemaHallViewSet)
 
 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("", include(router.urls)),
 ]
 
 app_name = "cinema"

cinema/views.py

@@ -1,45 +1,107 @@
-from rest_framework.decorators import api_view
+from django.shortcuts import get_object_or_404
+from rest_framework import status, viewsets
+from rest_framework.generics import GenericAPIView
+from rest_framework.mixins import (
+    ListModelMixin,
+    CreateModelMixin,
+    RetrieveModelMixin,
+    UpdateModelMixin,
+    DestroyModelMixin,
+)
 from rest_framework.response import Response
-from rest_framework import status
+from rest_framework.views import APIView
+from rest_framework.viewsets import ModelViewSet
 
-from django.shortcuts import get_object_or_404
+from cinema.models import Movie, Genre, Actor, CinemaHall
+from cinema.serializers import (
+    MovieSerializer,
+    GenreSerializer,
+    ActorSerializer,
+    CinemaHallSerializer,
+)
+
+
+class GenreList(APIView):
+    def get(self, request):
+        genres = Genre.objects.all()
+        serializer = GenreSerializer(genres, many=True)
+        return Response(serializer.data)
 
-from cinema.models import Movie
-from cinema.serializers import MovieSerializer
+    def post(self, request):
+        serializer = GenreSerializer(data=request.data)
+        serializer.is_valid(raise_exception=True)
+        serializer.save()
+        return Response(serializer.data, status=status.HTTP_201_CREATED)
 
 
-@api_view(["GET", "POST"])
-def movie_list(request):
-    if request.method == "GET":
-        movies = Movie.objects.all()
-        serializer = MovieSerializer(movies, many=True)
+class GenreDetail(APIView):
+    def get(self, request, pk):
+        genre = get_object_or_404(Genre, pk=pk)
+        serializer = GenreSerializer(genre)
         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)
+    def put(self, request, pk):
+        genre = get_object_or_404(Genre, pk=pk)
+        serializer = GenreSerializer(genre, data=request.data)
+        serializer.is_valid(raise_exception=True)
+        serializer.save()
+        return Response(serializer.data)
 
-        return Response(serializer.errors, status=status.HTTP_400_BAD_REQUEST)
+    def patch(self, request, pk):
+        genre = get_object_or_404(Genre, pk=pk)
+        serializer = GenreSerializer(genre, data=request.data, partial=True)
+        serializer.is_valid(raise_exception=True)
+        serializer.save()
+        return Response(serializer.data)
 
+    def delete(self, request, pk):
+        genre = get_object_or_404(Genre, pk=pk)
+        genre.delete()
+        return Response(status=status.HTTP_204_NO_CONTENT)
 
-@api_view(["GET", "PUT", "DELETE"])
-def movie_detail(request, pk):
-    movie = get_object_or_404(Movie, pk=pk)
 
-    if request.method == "GET":
-        serializer = MovieSerializer(movie)
-        return Response(serializer.data, status=status.HTTP_200_OK)
+class ActorList(GenericAPIView, ListModelMixin, CreateModelMixin):
+    queryset = Actor.objects.all()
+    serializer_class = ActorSerializer
 
-    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 get(self, request, *args, **kwargs):
+        return self.list(request, *args, **kwargs)
 
-        return Response(serializer.errors, status=status.HTTP_400_BAD_REQUEST)
+    def post(self, request, *args, **kwargs):
+        return self.create(request, *args, **kwargs)
 
-    if request.method == "DELETE":
-        movie.delete()
-        return Response(status=status.HTTP_204_NO_CONTENT)
+
+class ActorDetail(
+    GenericAPIView, RetrieveModelMixin, UpdateModelMixin, DestroyModelMixin
+):
+    queryset = Actor.objects.all()
+    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(
+    viewsets.GenericViewSet,
+    ListModelMixin,
+    CreateModelMixin,
+    RetrieveModelMixin,
+    UpdateModelMixin,
+    DestroyModelMixin,
+):
+    queryset = CinemaHall.objects.all()
+    serializer_class = CinemaHallSerializer
+
+
+class MovieViewSet(ModelViewSet):
+    queryset = Movie.objects.all()
+    serializer_class = MovieSerializer