'Solution'

cinema/migrations/0002_actor_cinemahall_genre_movie_actors_movie_genres.py

@@ -0,0 +1,47 @@
+# Generated by Django 4.1 on 2026-05-17 16:27
+
+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.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.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 Genre(models.Model):
+    name = models.CharField(max_length=255, unique=True)
+
+    def __str__(self) -> str:
+        return self.name
+
+
+class Actor(models.Model):
+    first_name = models.CharField(max_length=255)
+    last_name = models.CharField(max_length=255)
+
+    def __str__(self) -> str:
+        return f"{self.first_name} {self.last_name}"
+
+
 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):
+    def __str__(self) -> str:
         return self.title
+
+
+class CinemaHall(models.Model):
+    name = models.CharField(max_length=255)
+    rows = models.IntegerField()
+    seats_in_row = models.IntegerField()
+
+    def __str__(self) -> str:
+        return self.name

cinema/serializers.py

@@ -1,24 +1,131 @@
 from rest_framework import serializers
+from rest_framework import validators
 
-from cinema.models import Movie
+from cinema.models import (
+    Movie,
+    Actor,
+    Genre,
+    CinemaHall
+)
+
+
+class GenreSerializer(serializers.Serializer):
+    id = serializers.IntegerField(read_only=True)
+    name = serializers.CharField(
+        max_length=255,
+        validators=[
+            validators.UniqueValidator(
+                queryset=Genre.objects.all(),
+            )
+        ],
+    )
+
+    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 MovieSerializer(serializers.Serializer):
     id = serializers.IntegerField(read_only=True)
     title = serializers.CharField(max_length=255)
     description = serializers.CharField()
+    actors = serializers.PrimaryKeyRelatedField(
+        many=True,
+        queryset=Actor.objects.all()
+    )
+    genres = serializers.PrimaryKeyRelatedField(
+        many=True,
+        queryset=Genre.objects.all()
+    )
     duration = serializers.IntegerField()
 
     def create(self, validated_data):
-        return Movie.objects.create(**validated_data)
+        actors = validated_data.pop("actors")
+        genres = validated_data.pop("genres")
+
+        movie = Movie.objects.create(**validated_data)
+
+        movie.actors.set(actors)
+        movie.genres.set(genres)
+
+        return movie
 
     def update(self, instance, validated_data):
-        instance.title = validated_data.get("title", instance.title)
+        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.duration = validated_data.get("duration", instance.duration)
+        genres = validated_data.pop("genres", None)
+        actors = validated_data.pop("actors", None)
+        if genres:
+            instance.genres.set(genres)
+        if actors:
+            instance.actors.set(actors)
+        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 +1,67 @@
-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 (
+    GenreList,
+    GenreDetail,
+    ActorList,
+    ActorDetail,
+    CinemaHallViewSet,
+    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"