solution

cinema/migrations/0001_initial.py

@@ -1,30 +1,50 @@
-# Generated by Django 4.0.2 on 2022-05-03 13:41
+# Generated by Django 4.1 on 2024-09-22 19:42
 
+import django.core.validators
 from django.db import migrations, models
 
 
 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=150)),
+                ('last_name', models.CharField(max_length=150)),
+            ],
+        ),
+        migrations.CreateModel(
+            name='CinemaHall',
+            fields=[
+                ('id', models.BigAutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('name', models.CharField(max_length=150)),
+                ('rows', models.IntegerField(validators=[django.core.validators.MinValueValidator(5), django.core.validators.MaxValueValidator(30)])),
+                ('seats_in_row', models.IntegerField(validators=[django.core.validators.MinValueValidator(5), django.core.validators.MaxValueValidator(30)])),
+            ],
+        ),
+        migrations.CreateModel(
+            name='Genre',
+            fields=[
+                ('id', models.BigAutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('name', models.CharField(max_length=150, 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(default=1, validators=[django.core.validators.MinValueValidator(1), django.core.validators.MaxValueValidator(300)])),
+                ('actors', models.ManyToManyField(related_name='movies', to='cinema.actor')),
+                ('genres', models.ManyToManyField(related_name='movies', to='cinema.genre')),
             ],
         ),
     ]

cinema/models.py

@@ -1,10 +1,59 @@
+from django.core.validators import MinValueValidator, MaxValueValidator
 from django.db import models
 
 
+class Actor(models.Model):
+    first_name = models.CharField(max_length=150)
+    last_name = models.CharField(max_length=150)
+
+    def __str__(self):
+        return f'actor: "{self.first_name} {self.last_name}"'
+
+
+class Genre(models.Model):
+    name = models.CharField(max_length=150, unique=True)
+
+    def __str__(self):
+        return f'genre: "{self.name}"'
+
+
 class Movie(models.Model):
     title = models.CharField(max_length=255)
     description = models.TextField()
-    duration = models.IntegerField()
+    duration = models.IntegerField(
+        default=1,
+        validators=[
+            MinValueValidator(1),
+            MaxValueValidator(300),
+        ]
+    )
+    actors = models.ManyToManyField(Actor, related_name="movies")
+    genres = models.ManyToManyField(Genre, related_name="movies")
+
+    def __str__(self):
+        return (
+            f'movie: "{self.title}"\nduration: "{self.duration}"'
+        )
+
+
+class CinemaHall(models.Model):
+    name = models.CharField(max_length=150)
+    rows = models.IntegerField(
+        validators=[
+            MinValueValidator(5),
+            MaxValueValidator(30),
+        ]
+    )
+    seats_in_row = models.IntegerField(
+        validators=[
+            MinValueValidator(5),
+            MaxValueValidator(30),
+        ]
+    )
 
     def __str__(self):
-        return self.title
+        return (
+            f'cinema hall: "{self.name}"\n'
+            f'rows: "{self.rows}"'
+            f'seats_in_row: "{self.seats_in_row}"'
+        )

cinema/serializers.py

@@ -1,24 +1,34 @@
 from rest_framework import serializers
 
-from cinema.models import Movie
+from cinema.models import Actor, Genre, CinemaHall, Movie
 
 
-class MovieSerializer(serializers.Serializer):
-    id = serializers.IntegerField(read_only=True)
-    title = serializers.CharField(max_length=255)
-    description = serializers.CharField()
-    duration = serializers.IntegerField()
+class ActorSerializer(serializers.ModelSerializer):
+    class Meta:
+        model = Actor
+        fields = "__all__"
 
-    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 GenreSerializer(serializers.ModelSerializer):
+    class Meta:
+        model = Genre
+        fields = "__all__"
 
-        instance.save()
 
-        return instance
+class CinemaHallSerializer(serializers.ModelSerializer):
+    class Meta:
+        model = CinemaHall
+        fields = "__all__"
+
+
+class MovieSerializer(serializers.ModelSerializer):
+    actors = serializers.PrimaryKeyRelatedField(
+        many=True, queryset=Actor.objects.all()
+    )
+    genres = serializers.PrimaryKeyRelatedField(
+        many=True, queryset=Genre.objects.all()
+    )
+
+    class Meta:
+        model = Movie
+        fields = "__all__"

cinema/urls.py

@@ -1,10 +1,37 @@
-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 (
+    CinemaHallViewSet,
+    ActorList,
+    ActorDetail,
+    GenreList,
+    GenreDetail, 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",
+})
+
+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/", cinema_hall_list, name="cinema-hall-list"),
+    path("cinema_halls/<int:pk>/", cinema_hall_detail,
+         name="cinema-hall-detail"),
+    path("", include(router.urls)),
 ]
 
 app_name = "cinema"

cinema/views.py

@@ -1,45 +1,106 @@
-from rest_framework.decorators import api_view
 from rest_framework.response import Response
-from rest_framework import status
-
+from rest_framework import status, mixins, generics, viewsets
+from rest_framework.views import APIView
 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):
+        serializer = GenreSerializer(Genre.objects.all(), 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)
-
-        return Response(serializer.errors, status=status.HTTP_400_BAD_REQUEST)
+    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", "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):
+        serializer = GenreSerializer(self.get_object(pk))
         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)
-
-        return Response(serializer.errors, status=status.HTTP_400_BAD_REQUEST)
+    def put(self, request, pk):
+        serializer = GenreSerializer(self.get_object(pk), data=request.data)
+        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)
+
+    def patch(self, request, pk):
+        serializer = GenreSerializer(
+            self.get_object(pk), data=request.data, partial=True
+        )
+        serializer.is_valid(raise_exception=True)
+        serializer.save()
+        return Response(serializer.data)
+
+
+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 delete(self, request, *args, **kwargs):
+        return self.destroy(request, *args, **kwargs)
+
+    def patch(self, request, *args, **kwargs):
+        return self.partial_update(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