From ed49940dd1df940a218d88a5b1f99617e1a6cfae Mon Sep 17 00:00:00 2001
From: Vova <vovakucin082@gmail.com>
Date: Wed, 29 Apr 2026 09:54:08 +0200
Subject: [PATCH 1/2] Code writ

---
 car/serializers.py |  7 ++++++-
 main.py            | 14 ++++++++++++--
 2 files changed, 18 insertions(+), 3 deletions(-)

diff --git a/car/serializers.py b/car/serializers.py
index 3026b2b3..4b318f76 100644
--- a/car/serializers.py
+++ b/car/serializers.py
@@ -2,4 +2,9 @@
 
 
 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(min_value=1, max_value=1914)
+    is_broken = serializers.BooleanField()
+    problem_description = serializers.CharField(read_only=False, allow_blank=True, allow_null=True)
diff --git a/main.py b/main.py
index c8ff592b..36c8b2b2 100644
--- a/main.py
+++ b/main.py
@@ -1,9 +1,19 @@
 from car.models import Car
+from car.serializers import CarSerializer
+
+import io
+from rest_framework.renderers import JSONRenderer
+from rest_framework.parsers import JSONParser
+
 
 
 def serialize_car_object(car: Car) -> bytes:
-    pass
+    serialized_car = CarSerializer(car).data
+    json = JSONRenderer().render(serialized_car)
+    return json
 
 
 def deserialize_car_object(json: bytes) -> Car:
-    pass
+    stream = io.BytesIO(json)
+    data = JSONParser().parse(stream)
+    return Car(**data)

From 30bcaa15cd5b57e2b66bd7a56b2d38c637f5ceb1 Mon Sep 17 00:00:00 2001
From: Vova <vovakucin082@gmail.com>
Date: Wed, 29 Apr 2026 10:01:48 +0200
Subject: [PATCH 2/2] Code writ

---
 car/migrations/0001_initial.py | 26 ++++++++++++++++++++++++++
 car/serializers.py             |  6 +++++-
 main.py                        |  5 ++---
 3 files changed, 33 insertions(+), 4 deletions(-)
 create mode 100644 car/migrations/0001_initial.py

diff --git a/car/migrations/0001_initial.py b/car/migrations/0001_initial.py
new file mode 100644
index 00000000..087f0b98
--- /dev/null
+++ b/car/migrations/0001_initial.py
@@ -0,0 +1,26 @@
+# Generated by Django 4.1 on 2026-04-29 07:55
+
+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)),
+            ],
+        ),
+    ]
diff --git a/car/serializers.py b/car/serializers.py
index 4b318f76..3208ebbd 100644
--- a/car/serializers.py
+++ b/car/serializers.py
@@ -7,4 +7,8 @@ class CarSerializer(serializers.Serializer):
     model = serializers.CharField(max_length=64)
     horse_powers = serializers.IntegerField(min_value=1, max_value=1914)
     is_broken = serializers.BooleanField()
-    problem_description = serializers.CharField(read_only=False, allow_blank=True, allow_null=True)
+    problem_description = serializers.CharField(
+        required=False,
+        allow_blank=True,
+        allow_null=True
+    )
diff --git a/main.py b/main.py
index 36c8b2b2..ebe7ccb3 100644
--- a/main.py
+++ b/main.py
@@ -6,10 +6,9 @@
 from rest_framework.parsers import JSONParser
 
 
-
 def serialize_car_object(car: Car) -> bytes:
-    serialized_car = CarSerializer(car).data
-    json = JSONRenderer().render(serialized_car)
+    serialized_car = CarSerializer(car)
+    json = JSONRenderer().render(serialized_car.data)
     return json