Solution

cinema/models.py

@@ -1,6 +1,30 @@
 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 f"{self.first_name} {self.last_name}"
+
+
+class Genre(models.Model):
+    name = models.CharField(max_length=50, unique=True)
+
+    def __str__(self):
+        return self.name
+
+
+class CinemaHall(models.Model):
+    name = models.CharField(max_length=100)
+    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()

cinema/serializers.py

@@ -1,6 +1,24 @@
 from rest_framework import serializers
 
-from cinema.models import Movie
+from cinema.models import Actor, Genre, CinemaHall, Movie
+
+
+class ActorSerializer(serializers.ModelSerializer):
+    class Meta:
+        model = Actor
+        fields = "__all__"
+
+
+class GenreSerializer(serializers.ModelSerializer):
+    class Meta:
+        model = Genre
+        fields = "__all__"
+
+
+class CinemaHallSerializer(serializers.ModelSerializer):
+    class Meta:
+        model = CinemaHall
+        fields = "__all__"
 
 
 class MovieSerializer(serializers.Serializer):

cinema/urls.py

@@ -1,10 +1,18 @@
-from django.urls import path
+from django.urls import path, include
+from rest_framework.routers import DefaultRouter
+from cinema.views import GenreList, GenreDetail, \
+    ActorList, ActorDetail, CinemaHallViewSet, MovieViewSet
 
-from cinema.views import movie_list, movie_detail
+app_name = "cinema"
+
+router = DefaultRouter()
+router.register(r"cinema_halls", CinemaHallViewSet, basename="cinema_hall")
+router.register(r"movies", MovieViewSet, basename="movie")
 
 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 +1,158 @@
-from rest_framework.decorators import api_view
+from rest_framework.views import APIView
+from rest_framework.generics import RetrieveUpdateDestroyAPIView, \
+    ListCreateAPIView, GenericAPIView
+from rest_framework.viewsets import ModelViewSet, GenericViewSet
 from rest_framework.response import Response
 from rest_framework import status
-
 from django.shortcuts import get_object_or_404
 
-from cinema.models import Movie
-from cinema.serializers import MovieSerializer
+from cinema.models import Actor, Genre, CinemaHall, Movie
+from cinema.serializers import ActorSerializer, GenreSerializer, \
+    CinemaHallSerializer, MovieSerializer
+
+
+class GenreList(APIView):
+    """
+    Handles listing all genres and creating a new genre.
+    """
+    def get(self, request):
+        genres = Genre.objects.all()
+        serializer = GenreSerializer(genres, many=True)
+        return Response(serializer.data, status=status.HTTP_200_OK)
+
+    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):
+    """
+    Handles retrieving, updating, or deleting a single genre.
+    """
+    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)
+    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, status=status.HTTP_200_OK)
+
+    def patch(self, request, pk):
+        """
+        Handle partial update for Genre.
+        """
+        genre = get_object_or_404(Genre, pk=pk)
+        serializer = GenreSerializer(genre, data=request.data, partial=True)
         if serializer.is_valid():
             serializer.save()
-            return Response(serializer.data, status=status.HTTP_201_CREATED)
+            return Response(serializer.data, status=status.HTTP_200_OK)
+        return Response(serializer.errors, status=status.HTTP_400_BAD_REQUEST)
+
+    def delete(self, request, pk):
+        genre = get_object_or_404(Genre, pk=pk)
+        genre.delete()
+        return Response(status=status.HTTP_204_NO_CONTENT)
+
+
+class ActorList(ListCreateAPIView):
+    """
+    Handles listing all actors and creating a new actor.
+    """
+    queryset = Actor.objects.all()
+    serializer_class = ActorSerializer
+
+
+class ActorDetail(RetrieveUpdateDestroyAPIView):
+    """
+    Handles retrieving, updating, or deleting a single actor.
+    """
+    queryset = Actor.objects.all()
+    serializer_class = ActorSerializer
+
+
+class MovieViewSet(ModelViewSet):
+    """
+    Handles CRUD operations for the Movie model.
+    """
+    queryset = Movie.objects.all()
+    serializer_class = MovieSerializer
+
 
+class ActorGenericAPIView(GenericAPIView):
+    """
+    Handles CRUD operations for the Actor model.
+    """
+    queryset = Actor.objects.all()
+    serializer_class = ActorSerializer
+
+    def get(self, request):
+        actors = self.get_queryset()
+        serializer = self.get_serializer(actors, many=True)
+        return Response(serializer.data, status=status.HTTP_200_OK)
+
+    def post(self, request):
+        serializer = self.get_serializer(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 CinemaHallViewSet(GenericViewSet):
+    """
+    Handles CRUD operations for the CinemaHall model.
+    """
+    queryset = CinemaHall.objects.all()
+    serializer_class = CinemaHallSerializer
+
+    def list(self, request):
+        halls = self.get_queryset()
+        serializer = self.get_serializer(halls, many=True)
+        return Response(serializer.data, status=status.HTTP_200_OK)
 
-    if request.method == "GET":
-        serializer = MovieSerializer(movie)
+    def retrieve(self, request, pk=None):
+        hall = get_object_or_404(CinemaHall, pk=pk)
+        serializer = self.get_serializer(hall)
         return Response(serializer.data, status=status.HTTP_200_OK)
 
-    if request.method == "PUT":
-        serializer = MovieSerializer(movie, data=request.data)
+    def create(self, request):
+        serializer = self.get_serializer(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)
+
+    def update(self, request, pk=None):
+        hall = get_object_or_404(CinemaHall, pk=pk)
+        serializer = self.get_serializer(hall, 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 partial_update(self, request, pk=None):
+        hall = get_object_or_404(CinemaHall, pk=pk)
+        serializer = self.get_serializer(hall, 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 destroy(self, request, pk=None):
+        hall = get_object_or_404(CinemaHall, pk=pk)
+        hall.delete()
         return Response(status=status.HTTP_204_NO_CONTENT)
+
+
+class MovieModelViewSet(ModelViewSet):
+    """
+    Handles CRUD operations for the Movie model.
+    """
+    queryset = Movie.objects.all()
+    serializer_class = MovieSerializer

cinema_service/urls.py

@@ -1,7 +1,16 @@
 from django.contrib import admin
 from django.urls import path, include
+from django.http import HttpResponse
+
+
+def root_view(request):
+    return HttpResponse(
+        "Welcome to the Cinema API! Use /api/cinema/ to access the endpoints.",
+        content_type="text/plain")
+
 
 urlpatterns = [
     path("admin/", admin.site.urls),
     path("api/cinema/", include("cinema.urls", namespace="cinema")),
+    path("", root_view),
 ]