Django — Applications

Create App

python manage.py startapp blog

App Structure

blog/
├── __init__.py
├── admin.py        # Admin configuration
├── apps.py         # App configuration
├── models.py       # Data models
├── tests.py        # Tests
├── views.py        # View functions
└── migrations/     # Database migrations

Register App

# settings.py
INSTALLED_APPS = [
    'django.contrib.admin',
    ...
    'blog.apps.BlogConfig',  # or 'blog'
]

App Configuration

# blog/apps.py
from django.apps import AppConfig

class BlogConfig(AppConfig):
    default_auto_field = 'django.db.models.BigAutoField'
    name = 'blog'
    verbose_name = 'Blog'

App Independence

• Each app should be self-contained
• Use foreign keys for relationships
• Avoid cross-app imports when possible

Reusable Apps

# Make app reusable
# blog/__init__.py
default_app_config = 'blog.apps.BlogConfig'

Mini Practice

1. Create a new app
2. Register it in settings
3. Create app-specific views
4. Set up app URLs

Up Next

Continue with Structure — project structure best practices.