init

books/admin.py

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+from django.contrib import admin
+
+# Register your models here.
+from .models import Book, Author
+
+admin.site.site_header = "Moje Centrum Zarządzania" # Nagłówek na górze strony admina
+admin.site.site_title = "Panel admina - Moja Aplikacja" # Tytuł strony (np. zakładki przeglądarki)
+admin.site.index_title = "Witamy w panelu administracyjnym" # Nagłówek na stronie głównej po zalogowaniu
+
+class BookAdmin(admin.ModelAdmin):
+    list_display = ('title', 'author')
+    search_fields = ('title', 'author__name')
+    list_filter = ('author',)
+    ordering = ['title']
+    fields = ['title', 'author']
+    readonly_fields = ('id',)
+
+#admin.site.register(Book)
+#admin.site.register(Author)
+
+admin.site.register(Book, BookAdmin)
+
+class BookInline(admin.TabularInline):
+    model = Book
+    extra = 1
+
+class AuthorAdmin(admin.ModelAdmin):
+    inlines = [BookInline]
+
+admin.site.register(Author, AuthorAdmin)

books/apps.py

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

books/migrations/0001_initial.py

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+# Generated by Django 5.2 on 2025-04-07 15:44
+
+import django.db.models.deletion
+from django.db import migrations, models
+
+
+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')),
+                ('name', models.CharField(max_length=100)),
+            ],
+        ),
+        migrations.CreateModel(
+            name='Book',
+            fields=[
+                ('id', models.BigAutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('title', models.CharField(max_length=200)),
+                ('active', models.BooleanField(default=True)),
+                ('author', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, to='books.author')),
+            ],
+        ),
+    ]

books/models.py

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+from django.db import models
+
+# Create your models here.
+class Author(models.Model):
+    name = models.CharField(max_length=100, verbose_name="Imię i nazwisko")
+
+    def __str__(self):
+        return self.name
+    
+    class Meta:
+        verbose_name = "Autor"
+        verbose_name_plural = "Autorzy"
+
+class Book(models.Model):
+    title = models.CharField(max_length=200, verbose_name="Tytuł")
+    active = models.BooleanField(default=True, verbose_name="Aktywny")
+    author = models.ForeignKey(Author, on_delete=models.CASCADE, verbose_name="Autor") # (PROTECT, SET_NULL, RESTRICT).
+
+    def __str__(self):
+        return self.title
+
+    class Meta:
+        verbose_name = "Książka"
+        verbose_name_plural = "Książki"

books/tests.py

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

books/views.py

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+from django.shortcuts import render
+
+# Create your views here.