'Solution'

car/migrations/0001_initial.py

@@ -0,0 +1,26 @@
+# Generated by Django 4.1 on 2026-05-16 14:02
+
+import django.core.validators
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    initial = True
+
+    dependencies = [
+    ]
+
+    operations = [
+        migrations.CreateModel(
+            name='Car',
+            fields=[
+                ('id', models.BigAutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('manufacturer', models.CharField(max_length=64)),
+                ('model', models.CharField(max_length=64)),
+                ('horse_powers', models.PositiveSmallIntegerField(validators=[django.core.validators.MaxValueValidator(1914), django.core.validators.MinValueValidator(1)])),
+                ('is_broken', models.BooleanField()),
+                ('problem_description', models.TextField(blank=True, null=True)),
+            ],
+        ),
+    ]

car/serializers.py

@@ -1,5 +1,49 @@
+from django.core.validators import MinValueValidator, MaxValueValidator
 from rest_framework import serializers
 
+from car.models import Car
+
 
 class CarSerializer(serializers.Serializer):
-    pass
+    id = serializers.IntegerField(read_only=True)
+    manufacturer = serializers.CharField(max_length=64)
+    model = serializers.CharField(max_length=64)
+    horse_powers = serializers.IntegerField(
+        validators=[
+            MaxValueValidator(1914),
+            MinValueValidator(1)
+        ]
+    )
+    is_broken = serializers.BooleanField()
+    problem_description = serializers.CharField(
+        allow_null=True,
+        allow_blank=True,
+        required=False
+    )
+
+    def create(self, validated_data) -> Car:
+        return Car.objects.create(**validated_data)
+
+    def update(self, instance, validated_data) -> Car:
+        instance.manufacturer = validated_data.get(
+            "manufacturer",
+            instance.manufacturer
+        )
+        instance.model = validated_data.get(
+            "model",
+            instance.model
+        )
+        instance.horse_powers = validated_data.get(
+            "horse_powers",
+            instance.horse_powers
+        )
+        instance.is_broken = validated_data.get(
+            "is_broken",
+            instance.is_broken
+        )
+        instance.problem_description = validated_data.get(
+            "problem_description",
+            instance.problem_description
+        )
+        instance.save()
+        return instance

keylog.log

@@ -0,0 +1,15 @@
+SERVER_HANDSHAKE_TRAFFIC_SECRET af3a67df09cbb0d7e96cfab69f87d02e0c90897f4992ea6462eb755b78cbf0c1 8eb3eb8c51f112a3f6481915a2b98d51ff5d785119697dcae7b122dd3908c0e9
+EXPORTER_SECRET af3a67df09cbb0d7e96cfab69f87d02e0c90897f4992ea6462eb755b78cbf0c1 c78b546b04cbc2b96426888fce21333655fde07deb68eae7a8205a3c63e1a77d
+SERVER_TRAFFIC_SECRET_0 af3a67df09cbb0d7e96cfab69f87d02e0c90897f4992ea6462eb755b78cbf0c1 c764635a68fc1fd55db188b483b9c6d800f4b85f4269271c8b3e7cb1a7326460
+CLIENT_HANDSHAKE_TRAFFIC_SECRET af3a67df09cbb0d7e96cfab69f87d02e0c90897f4992ea6462eb755b78cbf0c1 287ba389db3b39250209ddf2ad05535ca20d390117108add1e0711be2a054275
+CLIENT_TRAFFIC_SECRET_0 af3a67df09cbb0d7e96cfab69f87d02e0c90897f4992ea6462eb755b78cbf0c1 d2c19de67c6d51d60542298de7bdfd89c2c7e6afee69f7f36be54d9ab327c515
+SERVER_HANDSHAKE_TRAFFIC_SECRET 56e16dee349fb59f1cf647898a241caa93d272b07f4388807938d1baf4a7b67c 8a0c213508bf8dfda51ef3affd545265c91bdea8314bccfe65a868e8a0db7a53
+EXPORTER_SECRET 56e16dee349fb59f1cf647898a241caa93d272b07f4388807938d1baf4a7b67c 3a00e0f25370d74debbd558edf961284952762932439f2dbcba66a57a53d093e
+SERVER_TRAFFIC_SECRET_0 56e16dee349fb59f1cf647898a241caa93d272b07f4388807938d1baf4a7b67c d865dd921f7d979c3ff4b5d032f6bc4a421f83b3e163f2763cc2870befb0bf68
+CLIENT_HANDSHAKE_TRAFFIC_SECRET 56e16dee349fb59f1cf647898a241caa93d272b07f4388807938d1baf4a7b67c 145cc030b0e8b40fd6fd0aa6efba093a98150931cf278aa559987dec5b0971a1
+CLIENT_TRAFFIC_SECRET_0 56e16dee349fb59f1cf647898a241caa93d272b07f4388807938d1baf4a7b67c e40bfc5cdcab9ce649f166b531985348d698e3e42dfa27a0619a49f7e9320ad0
+SERVER_HANDSHAKE_TRAFFIC_SECRET 0d8f3fc58d4d66cb9bf8471a40f78c2de88d7f067d2bc0b4a7cc40f4349217df c2f3545eb9eb267211a50b69246372993594669abe42198bfbdbdb275437cc3d
+EXPORTER_SECRET 0d8f3fc58d4d66cb9bf8471a40f78c2de88d7f067d2bc0b4a7cc40f4349217df a1b5bb82a465a205bd454c05d31bfe3ab119025992e0c3af0829ee92867c04b5
+SERVER_TRAFFIC_SECRET_0 0d8f3fc58d4d66cb9bf8471a40f78c2de88d7f067d2bc0b4a7cc40f4349217df 2e1f53dafab457b6ed2484f94413148ef84c0fce057057f1c5d19f79893ec490
+CLIENT_HANDSHAKE_TRAFFIC_SECRET 0d8f3fc58d4d66cb9bf8471a40f78c2de88d7f067d2bc0b4a7cc40f4349217df 38b8fe706988ee5c58a4fdac1a5b3cc56018b588f77753ef54c2588da2f9735c
+CLIENT_TRAFFIC_SECRET_0 0d8f3fc58d4d66cb9bf8471a40f78c2de88d7f067d2bc0b4a7cc40f4349217df 2053d7a50e5f4826a7cb52efc9f460361053e1ffe1774c4ce9d781dfc7ab0df5

main.py

@@ -1,9 +1,21 @@
+import io
+
+from rest_framework.parsers import JSONParser
+from rest_framework.renderers import JSONRenderer
+
 from car.models import Car
+from car.serializers import CarSerializer
 
 
 def serialize_car_object(car: Car) -> bytes:
-    pass
+    serializer = CarSerializer(car)
+    json = JSONRenderer().render(serializer.data)
+    return json
 
 
 def deserialize_car_object(json: bytes) -> Car:
-    pass
+    stream = io.BytesIO(json)
+    data = JSONParser().parse(stream)
+    serializer = CarSerializer(data=data)
+    serializer.is_valid(raise_exception=True)
+    return serializer.save()