implemented bookshelf app with Author, Books models

gabgeraldo_reading/bookshelf/admin.py

+from django.contrib import admin
+from .models import Author, Books
+
+class AuthorAdmin(admin.ModelAdmin):
+    model = Author
+    list_display = ('first_name', 'last_name', 'bio')
+    search_fields = ('first_name', 'last_name')
+    list_filter = ('nationality', 'age')
+
+class BooksAdmin(admin.ModelAdmin):
+    model = Books
+    list_display = ('isbn', 'title', 'author', 'blurb')
+    search_fields = ('title', 'isbn')
+    list_filter = ('author', 'publisher', 'year_published')
+
+admin.site.register(Author, AuthorAdmin)
+admin.site.register(Books, BooksAdmin)

gabgeraldo_reading/bookshelf/apps.py

+from django.apps import AppConfig
+
+
+class BookshelfConfig(AppConfig):
+    default_auto_field = 'django.db.models.BigAutoField'
+    name = 'bookshelf'

gabgeraldo_reading/bookshelf/migrations/0001_initial.py

+# Generated by Django 4.1.7 on 2023-03-28 13:20
+
+import django.core.validators
+from django.db import migrations, models
+import django.db.models.deletion
+
+
+class Migration(migrations.Migration):
+
+    initial = True
+
+    dependencies = [
+    ]
+
+    operations = [
+        migrations.CreateModel(
+            name='Author',
+            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)),
+                ('age', models.PositiveIntegerField()),
+                ('nationality', models.CharField(max_length=255)),
+                ('bio', models.TextField(max_length=700)),
+            ],
+        ),
+        migrations.CreateModel(
+            name='Books',
+            fields=[
+                ('id', models.BigAutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('title', models.CharField(max_length=255)),
+                ('publisher', models.CharField(max_length=255)),
+                ('year_published', models.PositiveIntegerField(validators=[django.core.validators.MaxValueValidator(2023)])),
+                ('isbn', models.PositiveIntegerField(unique=True, validators=[django.core.validators.MaxValueValidator(9999999999999), django.core.validators.MinValueValidator(1000000000000)])),
+                ('blurb', models.TextField(validators=[django.core.validators.MaxLengthValidator(200), django.core.validators.MinLengthValidator(100)])),
+                ('author', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, to='bookshelf.author')),
+            ],
+        ),
+    ]

gabgeraldo_reading/bookshelf/models.py

+from django.db import models
+from django.core.validators import MinValueValidator,MaxValueValidator, MinLengthValidator, MaxLengthValidator
+from django.utils.timezone import datetime
+
+# Create your models here.
+class Author(models.Model):
+    first_name = models.CharField(max_length=255)
+    last_name = models.CharField(max_length=255)
+    age = models.PositiveIntegerField()
+    nationality = models.CharField(max_length=255)
+    bio = models.TextField(max_length=700)
+
+    def __str__(self):
+        return f"{self.first_name} {self.last_name}"
+
+class Books(models.Model):
+    title = models.CharField(max_length=255)
+    author = models.ForeignKey(Author, on_delete=models.CASCADE)
+    publisher = models.CharField(max_length=255)
+    year_published = models.PositiveIntegerField(
+        validators=[MaxValueValidator(datetime.today().year)]
+    )
+    isbn = models.PositiveIntegerField(
+        validators=[MaxValueValidator(9999999999999), MinValueValidator(1000000000000)], 
+        unique=True
+    )
+    blurb = models.TextField(
+        validators=[MaxLengthValidator(200), MinLengthValidator(100)]
+    )
+
+    def __str__(self):
+        return f"{self.title} by {self.author}"
\ No newline at end of file

gabgeraldo_reading/bookshelf/tests.py

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

gabgeraldo_reading/bookshelf/urls.py

+from django.urls import path
+from .views import index
+
+
+urlpatterns = [
+    path('', index, name='index')
+]
+
+app_name = "bookshelf"
\ No newline at end of file

gabgeraldo_reading/bookshelf/views.py

+from django.shortcuts import render
+from django.http import HttpResponse
+
+# Create your views here.
+def index(request):
+    return HttpResponse('initialized bookshelf views')
\ No newline at end of file

gabgeraldo_reading/gabgeraldo_reading/settings.py

@@ -41,6 +41,7 @@ INSTALLED_APPS = [
     'django.contrib.sessions',
     'django.contrib.messages',
     'django.contrib.staticfiles',
+    'bookshelf',
 ]
 
 MIDDLEWARE = [

gabgeraldo_reading/gabgeraldo_reading/urls.py

@@ -14,8 +14,9 @@ Including another URLconf
     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 include, path
 
 urlpatterns = [
     path('admin/', admin.site.urls),
+    path('bookshelf/', include('bookshelf.urls', namespace="bookshelf"))
 ]