Solution

cinema/migrations/0001_initial.py

@@ -1,4 +1,4 @@
-# Generated by Django 4.0.2 on 2022-05-03 13:41
+# Generated by Django 4.1 on 2023-11-28 12:00
 
 from django.db import migrations, models
 
@@ -7,24 +7,43 @@ class Migration(migrations.Migration):
 
     initial = True
 
-    dependencies = []
+    dependencies = [
+    ]
 
     operations = [
         migrations.CreateModel(
-            name="Movie",
+            name='Actor',
+            fields=[
+                ('id', models.BigAutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('first_name', models.CharField(max_length=255)),
+                ('last_name', models.CharField(max_length=255)),
+            ],
+        ),
+        migrations.CreateModel(
+            name='CinemaHall',
+            fields=[
+                ('id', models.BigAutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('name', models.CharField(max_length=255, unique=True)),
+                ('rows', models.IntegerField()),
+                ('seats_in_row', models.IntegerField()),
+            ],
+        ),
+        migrations.CreateModel(
+            name='Genre',
+            fields=[
+                ('id', models.BigAutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('name', models.CharField(max_length=255, unique=True)),
+            ],
+        ),
+        migrations.CreateModel(
+            name='Movie',
             fields=[
-                (
-                    "id",
-                    models.BigAutoField(
-                        auto_created=True,
-                        primary_key=True,
-                        serialize=False,
-                        verbose_name="ID",
-                    ),
-                ),
-                ("title", models.CharField(max_length=255)),
-                ("description", models.TextField()),
-                ("duration", models.IntegerField()),
+                ('id', models.BigAutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('title', models.CharField(max_length=255)),
+                ('description', models.TextField()),
+                ('duration', models.IntegerField()),
+                ('actors', models.ManyToManyField(related_name='movies', to='cinema.actor')),
+                ('genres', models.ManyToManyField(related_name='movies', to='cinema.genre')),
             ],
         ),
     ]

cinema/models.py

@@ -1,10 +1,36 @@
 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 f"{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, unique=True)
+    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()
     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

@@ -1,16 +1,28 @@
 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()
+    actors = serializers.PrimaryKeyRelatedField(
+        queryset=Actor.objects.all(), required=False, many=True)
+    genres = serializers.PrimaryKeyRelatedField(
+        queryset=Genre.objects.all(), required=False, many=True)
 
     def create(self, validated_data):
-        return Movie.objects.create(**validated_data)
+        actors_data = validated_data.pop("actors", [])
+        genres_data = validated_data.pop("genres", [])
+
+        movie = Movie.objects.create(**validated_data)
+
+        movie.actors.set(actors_data)
+        movie.genres.set(genres_data)
+
+        return movie
 
     def update(self, instance, validated_data):
         instance.title = validated_data.get("title", instance.title)
@@ -19,6 +31,68 @@ def update(self, instance, validated_data):
         )
         instance.duration = validated_data.get("duration", instance.duration)
 
+        actors_data = validated_data.get("actors", [])
+        genres_data = validated_data.get("genres", [])
+
+        if actors_data:
+            instance.actors.set(actors_data)
+        if genres_data:
+            instance.genres.set(genres_data)
+
+        instance.save()
+
+        return instance
+
+
+class ActorSerializer(serializers.Serializer):
+    id = serializers.IntegerField(read_only=True)
+    first_name = serializers.CharField(max_length=255)
+    last_name = serializers.CharField(max_length=255)
+
+    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 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 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 +1,35 @@
-from django.urls import path
+from django.urls import path, include
+from rest_framework import routers
+from cinema.views import (MovieViewSet,
+                          GenreList,
+                          GenreDetail,
+                          ActorList,
+                          ActorDetail,
+                          CinemaHallViewSet)
 
-from cinema.views import movie_list, movie_detail
+
+cinemahall_list = CinemaHallViewSet.as_view(
+    actions={"get": "list", "post": "create"})
+cinemahall_detail = CinemaHallViewSet.as_view(
+    actions={"get": "retrieve",
+             "put": "update",
+             "patch": "partial_update",
+             "delete": "destroy"})
+router = routers.DefaultRouter()
+router.register("movies", 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/",
+         cinemahall_list,
+         name="cinemahall-list"),
+    path("cinema_halls/<int:pk>/",
+         cinemahall_detail,
+         name="cinemahall-detail"),
+    path("", include(router.urls))
 ]
 
 app_name = "cinema"

cinema/views.py

@@ -1,45 +1,106 @@
-from rest_framework.decorators import api_view
+from django.shortcuts import get_object_or_404
 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 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):
+        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):
+        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)
+    def put(self, request, pk):
+        genre = self.get_object(pk)
+        serializer = GenreSerializer(genre, 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):
+        genre = self.get_object(pk)
+        serializer = GenreSerializer(genre, 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):
+        genre = self.get_object(pk)
+        genre.delete()
         return Response(status=status.HTTP_204_NO_CONTENT)
+
+
+class ActorList(mixins.ListModelMixin,
+                mixins.CreateModelMixin,
+                generics.GenericAPIView):
+    queryset = Actor.objects.all()
+    serializer_class = ActorSerializer
+
+    def get(self, request, *args, **kwargs):
+        return self.list(request, *args, **kwargs)
+
+    def post(self, request, *args, **kwargs):
+        return self.create(request, *args, **kwargs)
+
+
+class ActorDetail(mixins.RetrieveModelMixin,
+                  mixins.UpdateModelMixin,
+                  mixins.DestroyModelMixin,
+                  generics.GenericAPIView):
+    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(mixins.ListModelMixin,
+                        mixins.CreateModelMixin,
+                        mixins.RetrieveModelMixin,
+                        mixins.UpdateModelMixin,
+                        mixins.DestroyModelMixin,
+                        viewsets.GenericViewSet):
+    queryset = CinemaHall.objects.all()
+    serializer_class = CinemaHallSerializer
+
+
+class MovieViewSet(viewsets.ModelViewSet):
+    queryset = Movie.objects.all()
+    serializer_class = MovieSerializer