Solution

cinema/models.py

@@ -1,9 +1,34 @@
 from django.db import models
 
 
+class Actor(models.Model):
+    first_name = models.CharField(max_length=100)
+    last_name = models.CharField(max_length=100)
+
+    def __str__(self):
+        return self.first_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.IntegerField()
+    seats_in_row = models.IntegerField()
+
+    def __str__(self):
+        return self.name
+
 class Movie(models.Model):
     title = models.CharField(max_length=255)
     description = models.TextField()
+    actors = models.ManyToManyField(Actor, related_name="movies")
+    genres = models.ManyToManyField(Genre, related_name="movies")
     duration = models.IntegerField()
 
     def __str__(self):

cinema/serializers.py

@@ -1,24 +1,30 @@
 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 MovieSerializer(serializers.ModelSerializer):
+    class Meta:
+        model = Movie
+        fields = "__all__"
+        read_only_fields = ["id"]
 
-    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 ActorSerializer(serializers.ModelSerializer):
+    class Meta:
+        model = Actor
+        fields = "__all__"
+        read_only_fields = ["id"]
 
-        instance.save()
 
-        return instance
+class GenreSerializer(serializers.ModelSerializer):
+    class Meta:
+        model = Genre
+        fields = "__all__"
+        read_only_fields = ["id"]
+
+class CinemaHallSerializer(serializers.ModelSerializer):
+    class Meta:
+        model = CinemaHall
+        fields = "__all__"
+        read_only_fields = ["id"]

cinema/urls.py

@@ -1,10 +1,19 @@
-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, CinemaHallViewSet, MovieViewSet
+
+router = routers.DefaultRouter()
+router.register("movies", MovieViewSet)
+router.register("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="actors-list"),
+    path("actors/<int:pk>/", ActorDetail.as_view(), name="actors-detail"),
+    path("", include(router.urls)),
+
 ]
 
 app_name = "cinema"

cinema/views.py

@@ -1,45 +1,78 @@
-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, viewsets
 
 from django.shortcuts import get_object_or_404
 
-from cinema.models import Movie
-from cinema.serializers import MovieSerializer
+from cinema.models import Movie, Genre, Actor, CinemaHall
+from cinema.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 GenreList(APIView):
+    def get(self, request):
+        genre = Genre.objects.all()
+        serializer = GenreSerializer(genre, 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)
+    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)
 
-        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)
-
-    if request.method == "GET":
-        serializer = MovieSerializer(movie)
+    def get(self, request, pk):
+        genre = self.get_object(pk)
+        serializer = GenreSerializer(genre)
         return Response(serializer.data, status=status.HTTP_200_OK)
 
-    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 put(self, request, pk):
+        genre = self.get_object(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 = 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 == "DELETE":
-        movie.delete()
+    def delete(self, request, pk):
+        genre = self.get_object(pk)
+        genre.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(
+    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