Implement Book model and CRUD API with permissions

README.md

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+# Library Service API

book/admin.py

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+from django.contrib import admin
+from .models import Book
+
+
+@admin.register(Book)
+class BookAdmin(admin.ModelAdmin):
+    list_display = ("title", "author", "cover", "inventory", "daily_fee")
+    list_filter = ("cover",)
+    search_fields = ("title", "author")

book/apps.py

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+from django.apps import AppConfig
+
+
+class BookConfig(AppConfig):
+    default_auto_field = "django.db.models.BigAutoField"
+    name = "book"

book/migrations/0001_initial.py

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+# Generated by Django 5.0.14 on 2026-05-17 09:53
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    initial = True
+
+    dependencies = []
+
+    operations = [
+        migrations.CreateModel(
+            name="Book",
+            fields=[
+                (
+                    "id",
+                    models.BigAutoField(
+                        auto_created=True,
+                        primary_key=True,
+                        serialize=False,
+                        verbose_name="ID",
+                    ),
+                ),
+                ("title", models.CharField(max_length=255)),
+                ("author", models.CharField(max_length=255)),
+                (
+                    "cover",
+                    models.CharField(
+                        choices=[("HARD", "Hardcover"), ("SOFT", "Softcover")],
+                        default="SOFT",
+                        max_length=4,
+                    ),
+                ),
+                ("inventory", models.PositiveIntegerField()),
+                ("daily_fee", models.DecimalField(decimal_places=2, max_digits=6)),
+            ],
+        ),
+    ]

book/models.py

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+from django.db import models
+
+
+class Book(models.Model):
+    class CoverChoices(models.TextChoices):
+        HARD = "HARD", "Hardcover"
+        SOFT = "SOFT", "Softcover"
+
+    title = models.CharField(max_length=255)
+    author = models.CharField(max_length=255)
+    cover = models.CharField(
+        max_length=4,
+        choices=CoverChoices.choices,
+        default=CoverChoices.SOFT
+    )
+    inventory = models.PositiveIntegerField()
+    daily_fee = models.DecimalField(max_digits=6, decimal_places=2)
+
+    def __str__(self):
+        return f"{self.title} by {self.author} ({self.cover})"

book/serializers.py

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+from rest_framework import serializers
+from .models import Book
+
+
+class BookSerializer(serializers.ModelSerializer):
+    class Meta:
+        model = Book
+        fields = ("id", "title", "author", "cover", "inventory", "daily_fee")

book/tests.py

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+from django.test import TestCase
+
+# Create your tests here.

book/urls.py

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+from django.urls import path, include
+from rest_framework.routers import DefaultRouter
+from .views import BookViewSet
+
+router = DefaultRouter()
+router.register("", BookViewSet)
+
+urlpatterns = [
+    path("", include(router.urls)),
+]
+
+app_name = "book"

book/views.py

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+from rest_framework import viewsets
+from rest_framework.permissions import IsAdminUser, AllowAny
+from .models import Book
+from .serializers import BookSerializer
+
+
+class BookViewSet(viewsets.ModelViewSet):
+    queryset = Book.objects.all()
+    serializer_class = BookSerializer
+
+    def get_permissions(self):
+        if self.action in ["list", "retrieve"]:
+            return [AllowAny()]
+        return [IsAdminUser()]

library_config/settings.py

@@ -41,6 +41,7 @@
     "django.contrib.sessions",
     "django.contrib.messages",
     "django.contrib.staticfiles",
+    "book",
 ]
 
 MIDDLEWARE = [

library_config/urls.py

@@ -1,23 +1,7 @@
-"""
-URL configuration for library_config project.
-
-The `urlpatterns` list routes URLs to views. For more information please see:
-    https://docs.djangoproject.com/en/5.0/topics/http/urls/
-Examples:
-Function views
-    1. Add an import:  from my_app import views
-    2. Add a URL to urlpatterns:  path('', views.home, name='home')
-Class-based views
-    1. Add an import:  from other_app.views import Home
-    2. Add a URL to urlpatterns:  path('', Home.as_view(), name='home')
-Including another URLconf
-    1. Import the include() function: from django.urls import include, path
-    2. Add a URL to urlpatterns:  path('blog/', include('blog.urls'))
-"""
-
 from django.contrib import admin
-from django.urls import path
+from django.urls import path, include
 
 urlpatterns = [
     path("admin/", admin.site.urls),
+    path("api/books/", include("book.urls", namespace="book")),
 ]