Solution

cinema/migrations/0002_actor_cinemahall_genre_alter_movie_duration_and_more.py

@@ -0,0 +1,76 @@
+# Generated by Django 4.1 on 2024-12-10 14:42
+
+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=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)),
+                ("rows", models.PositiveIntegerField(default=0)),
+                ("seats_in_row", models.PositiveIntegerField(default=0)),
+            ],
+        ),
+        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.AlterField(
+            model_name="movie",
+            name="duration",
+            field=models.IntegerField(default=0),
+        ),
+        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

@@ -1,10 +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)
+    rows = models.PositiveIntegerField(default=0)
+    seats_in_row = models.PositiveIntegerField(default=0)
+
+    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")
+    duration = models.IntegerField(default=0)
 
     def __str__(self):
         return self.title

cinema/serializers.py

@@ -1,23 +1,89 @@
+from enum import unique
+
 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()
+    title = serializers.CharField(required=False, max_length=255)
+    description = serializers.CharField(
+        style={
+            "base_template": "textarea.html"
+        }
+    )
+    duration = serializers.IntegerField(min_value=0, required=True)
 
     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
+            "description",
+            instance.description
         )
         instance.duration = validated_data.get("duration", instance.duration)
+        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 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 CinemaHallSerializer(serializers.Serializer):
+    id = serializers.IntegerField(read_only=True)
+    name = serializers.CharField(max_length=255)
+    rows = serializers.IntegerField(min_value=0, required=True)
+    seats_in_row = serializers.IntegerField(min_value=0)
+
+    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()
 

cinema/urls.py

@@ -1,10 +1,43 @@
-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
+
+router = routers.DefaultRouter()
+router.register("movies", MovieViewSet)
+
+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",
+    }
+)
 
 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/", cinemahall_list, name="cinemahall_list"),
+    path(
+        "cinema_halls/<int:pk>/",
+        cinemahall_detail,
+        name="cinemahall_detail"
+    ),
 ]
 
 app_name = "cinema"

cinema/views.py

@@ -1,45 +1,108 @@
+from django.core.serializers import serialize
 from rest_framework.decorators import api_view
 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)
-        return Response(serializer.data, status=status.HTTP_200_OK)
+class MovieViewSet(viewsets.ModelViewSet):
+    queryset = Movie.objects.all()
+    serializer_class = MovieSerializer
+
 
-    if request.method == "POST":
-        serializer = MovieSerializer(data=request.data)
-        if serializer.is_valid():
-            serializer.save()
-            return Response(serializer.data, status=status.HTTP_201_CREATED)
+class GenreList(APIView):
+    def get(self, request) -> Response:
+        genres = Genre.objects.all()
+        serializer = GenreSerializer(genres, many=True)
+        return Response(serializer.data, status=status.HTTP_200_OK)
 
-        return Response(serializer.errors, status=status.HTTP_400_BAD_REQUEST)
+    def post(self, request) -> Response:
+        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: int) -> Genre:
+        return get_object_or_404(Genre, pk=pk)
 
-    if request.method == "GET":
-        serializer = MovieSerializer(movie)
+    def get(self, request, pk: int) -> Response:
+        serializer = GenreSerializer(self.get_object(pk=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)
+    def put(self, request, pk: int) -> Response:
+        serializer = GenreSerializer(self.get_object(pk=pk), data=request.data)
+        serializer.is_valid(raise_exception=True)
+        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: int) -> Response:
+        genre = self.get_object(pk=pk)
+        serializer = GenreSerializer(genre, data=request.data, partial=True)
+        serializer.is_valid(raise_exception=True)
+        serializer.save()
+        return Response(serializer.data, status=status.HTTP_200_OK)
 
-    if request.method == "DELETE":
-        movie.delete()
+    def delete(self, request, pk: int) -> Response:
+        self.get_object(pk=pk).delete()
         return Response(status=status.HTTP_204_NO_CONTENT)
+
+
+class ActorList(
+    generics.GenericAPIView,
+    mixins.ListModelMixin,
+    mixins.CreateModelMixin
+):
+    queryset = Actor.objects.all()
+    serializer_class = ActorSerializer
+
+    def get(self, request, *args, **kwargs) -> Response:
+        return self.list(request, *args, **kwargs)
+
+    def post(self, request, *args, **kwargs) -> Response:
+        return self.create(request, *args, **kwargs)
+
+
+class ActorDetail(
+    generics.GenericAPIView,
+    mixins.RetrieveModelMixin,
+    mixins.UpdateModelMixin,
+    mixins.DestroyModelMixin,
+):
+    queryset = Actor.objects.all()
+    serializer_class = ActorSerializer
+
+    def get(self, request, *args, **kwargs) -> Response:
+        return self.retrieve(request, *args, **kwargs)
+
+    def put(self, request, *args, **kwargs) -> Response:
+        return self.update(request, *args, **kwargs)
+
+    def patch(self, request, *args, **kwargs) -> Response:
+        return self.partial_update(request, *args, **kwargs)
+
+    def delete(self, request, *args, **kwargs) -> Response:
+        return self.destroy(request, *args, **kwargs)
+
+
+class CinemaHallViewSet(
+    viewsets.GenericViewSet,
+    mixins.ListModelMixin,
+    mixins.CreateModelMixin,
+    mixins.RetrieveModelMixin,
+    mixins.UpdateModelMixin,
+    mixins.DestroyModelMixin,
+):
+    queryset = CinemaHall.objects.all()
+    serializer_class = CinemaHallSerializer