Solution

cinema/migrations/0002_actor_cinemahall_genre_movie_actors_movie_genres.py

@@ -0,0 +1,70 @@
+# Generated by Django 4.1 on 2023-10-10 15:17
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+    dependencies = [
+        ("cinema", "0001_initial"),
+    ]
+
+    operations = [
+        migrations.CreateModel(
+            name="Actor",
+            fields=[
+                (
+                    "id",
+                    models.BigAutoField(
+                        auto_created=True,
+                        primary_key=True,
+                        serialize=False,
+                        verbose_name="ID",
+                    ),
+                ),
+                ("first_name", models.CharField(max_length=63)),
+                ("last_name", models.CharField(max_length=63)),
+            ],
+        ),
+        migrations.CreateModel(
+            name="CinemaHall",
+            fields=[
+                (
+                    "id",
+                    models.BigAutoField(
+                        auto_created=True,
+                        primary_key=True,
+                        serialize=False,
+                        verbose_name="ID",
+                    ),
+                ),
+                ("name", models.CharField(max_length=63)),
+                ("rows", models.PositiveIntegerField()),
+                ("seats_in_row", models.PositiveIntegerField()),
+            ],
+        ),
+        migrations.CreateModel(
+            name="Genre",
+            fields=[
+                (
+                    "id",
+                    models.BigAutoField(
+                        auto_created=True,
+                        primary_key=True,
+                        serialize=False,
+                        verbose_name="ID",
+                    ),
+                ),
+                ("name", models.CharField(max_length=63, unique=True)),
+            ],
+        ),
+        migrations.AddField(
+            model_name="movie",
+            name="actors",
+            field=models.ManyToManyField(related_name="movies", to="cinema.actor"),
+        ),
+        migrations.AddField(
+            model_name="movie",
+            name="genres",
+            field=models.ManyToManyField(related_name="movies", to="cinema.genre"),
+        ),
+    ]

cinema/models.py

@@ -1,9 +1,35 @@
 from django.db import models
 
 
+class Genre(models.Model):
+    name = models.CharField(max_length=63, unique=True)
+
+    def __str__(self):
+        return self.name
+
+
+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 CinemaHall(models.Model):
+    name = models.CharField(max_length=63)
+    rows = models.PositiveIntegerField()
+    seats_in_row = models.PositiveIntegerField()
+
+    def __str__(self):
+        return f"{self.name} ({self.rows * self.seats_in_row} seats)"
+
+
 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 +1,53 @@
 from rest_framework import serializers
 
-from cinema.models import Movie
+from cinema.models import Movie, Genre, Actor, 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(required=False, queryset=Actor.objects.all(), many=True)
+    genres = serializers.PrimaryKeyRelatedField(required=False, queryset=Genre.objects.all(), many=True)
+    duration = serializers.IntegerField(min_value=1)
 
     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)
-        instance.description = validated_data.get(
-            "description", instance.description
-        )
-        instance.duration = validated_data.get("duration", instance.duration)
+        instance.title = validated_data.get('title', instance.title)
+        instance.description = validated_data.get('description', instance.description)
+        instance.duration = validated_data.get('duration', instance.duration)
 
-        instance.save()
+        actors_data = validated_data.get('actors')
+        if actors_data is not None:
+            instance.actors.set(actors_data)
+
+        genres_data = validated_data.get('genres')
+        if genres_data is not None:
+            instance.genres.set(genres_data)
 
+        instance.save()
         return instance
+
+
+class GenreSerializer(serializers.ModelSerializer):
+    class Meta:
+        model = Genre
+        fields = "__all__"
+
+
+class ActorSerializer(serializers.ModelSerializer):
+    class Meta:
+        model = Actor
+        fields = "__all__"
+
+
+class CinemaHallSerializer(serializers.ModelSerializer):
+    class Meta:
+        model = CinemaHall
+        fields = "__all__"

cinema/urls.py

@@ -1,10 +1,39 @@
-from django.urls import path
+from django.urls import path, include
 
-from cinema.views import movie_list, movie_detail
+from cinema.views import GenreList, GenreDetail, ActorDetail, ActorList, CinemaHallViewSet, MovieViewSet
+from rest_framework import routers
+
+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 +1,111 @@
-from rest_framework.decorators import api_view
+from rest_framework import mixins
+from django.http import Http404
+from rest_framework.generics import GenericAPIView
 from rest_framework.response import Response
 from rest_framework import status
 
 from django.shortcuts import get_object_or_404
+from rest_framework.views import APIView
+from rest_framework.viewsets import GenericViewSet, ModelViewSet
 
-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):
 
-    if request.method == "GET":
-        serializer = MovieSerializer(movie)
+    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 == "PUT":
-        serializer = MovieSerializer(movie, data=request.data)
+    def put(self, request, pk):
+        genre = get_object_or_404(Genre, pk=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)
 
-    if request.method == "DELETE":
-        movie.delete()
+    def patch(self, request, pk):
+        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_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(
+    mixins.ListModelMixin,
+    mixins.CreateModelMixin,
+    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,
+    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.CreateModelMixin,
+    mixins.RetrieveModelMixin,
+    mixins.UpdateModelMixin,
+    mixins.DestroyModelMixin,
+    mixins.ListModelMixin,
+    GenericViewSet
+):
+    queryset = CinemaHall.objects.all()
+    serializer_class = CinemaHallSerializer
+
+
+class MovieViewSet(ModelViewSet):
+    queryset = Movie.objects.all()
+    serializer_class = MovieSerializer