Django
↓
Services & Signals
This section covers separating complex logic into service layers and using signals to react to changes in your data without tightly coupling components. Topics include service patterns for organizing business logic, when to move logic out of views/models, Django signals (pre_save, post_save, etc.), use cases for event-driven behavior, and common pitfalls like hidden side effects and debugging challenges.
Introduction to Services in Django
This article introduces services in Django and explains how they can separate business workflows from views, forms, and models. It covers service functions, service classes, transactions, business rules, permissions, external APIs, background tasks, testing, project organization, and when a service layer is useful or unnecessary.
As a Django application grows, views can easily become overloaded.
A small view may begin like this:
⧉
1 2 | |
T ...
Introduction to Django Signals
This article introduces Django signals and explains how they allow different parts of an application to respond to events such as model saves, deletions, many-to-many changes, requests, and user authentication. It covers receivers, senders, signal registration, common built-in signals, custom signals, transactions, testing, common mistakes, and when explicit function calls are a better choice.
Django applications are made of components that perform different jobs.
A model saves data. A view processes a request. A user logs in. A many-to-many relations ...
Join the Newsletter
Practical insights on Django, backend systems, deployment, architecture, and real-world development — delivered without noise.
Get updates when new guides, learning paths, cheat sheets, and field notes are published.
No spam. Unsubscribe anytime.
There is no third-party involved so don't worry - we won't share your details with anyone.