Django
Build secure, scalable backend systems with Django — from fundamentals to production-ready architecture. jango makes it relatively easy to get an application up and running, but building systems that remain stable, secure, and maintainable in production requires a deeper understanding of how these components interact. The following sections and guides expand on these concepts in more detail, focusing on real-world patterns, common pitfalls, and the decisions that matter once you move beyond basic tutorials.
Django applications are the core building blocks of any Django project. They help organize and separate business logic across projects.
Organizing and properly separating business concerns in large, enterprise-scale applications.
Instead of having all your apps clutter up your project's directory, organizing them in a dedicated 'apps/' directory makes the project more structured.
At first glance, manage.py looks like a tiny boilerplate file. In reality, it is one of the most important parts of every Django project.
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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.
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.
This article introduces Django’s {% include %} template tag and explains how to reuse small template fragments across pages. It covers context sharing, with, only, loops, reusable partials, template organization, inheritance differences, performance considerations, testing, and common mistakes..
For most Django developers, template tags are where backend data first becomes a real user-facing interface. If you learn the basics well, you can build most Django frontends comfortably using these basic tags.
Many developers first see csrf_token as a mysterious line copied from tutorials. In reality, it is a critical security feature protecting authenticated users from forged actions.
Learn how to create static and dynamic sitemaps in Django using the built-in sitemap framework, including model-backed URLs, static views, location(), and common routing mistakes to avoid.
A practical guide to building a dedicated security logging system in Django using Python logging, custom handlers, and a separate PostgreSQL database. Covers logger configuration, handler internals, connection pooling, threading.Lock(), middleware integration, and when async or queued logging becomes worthwhile.
This article provides a beginner-friendly introduction to Django’s authentication system. It explains users, passwords, sessions, login and logout, permissions, groups, built-in authentication views, access control for function-based and class-based views, registration, password management, and the role of custom user models.
This article introduces Django’s class-based views and explains how they organize request-handling logic using Python classes. It covers the base View class, HTTP method handlers, generic views, URL configuration, common attributes and methods, mixins, CRUD patterns, and situations where class-based views are preferable to function-based views.
A practical introduction to Django’s function-based views, explaining how they handle requests and responses, connect to URLs, render templates, process forms, interact with models, and manage redirects. The article also compares function-based views with class-based views and highlights their advantages, limitations, and best practices.
A beginner-friendly guide to Django’s urls.py, explaining how URL routing connects requests to views, how to define static and dynamic URL patterns, and how to organize routes with include(). The article also covers URL names, reverse URL resolution, common routing mistakes, best practices, and namespacing for avoiding conflicts in larger Django projects.
This article introduces unit testing in Django and explains how to verify models, forms, views, URLs, authentication, permissions, email, file uploads, and database behavior. It covers Django’s test classes, the test client, setup methods, assertions, mocking, fixtures, test organization, common mistakes, and practical testing workflows.
This article explains how to integrate a React frontend with a Django application using Django REST Framework, Vite, and django-cors-headers. It covers project setup, API creation, React data fetching, CORS and CSRF, authentication options, deployment approaches, common problems, and recommended frontend-backend boundaries.
This beginner-friendly article introduces Django models and explains how they define the structure and behavior of application data. It covers model classes, fields, field options, primary keys, relationships, methods, metadata, migrations, ORM operations, and Django admin registration. By the end, developers new to Django will understand how models connect Python code to database tables and form the foundation of a Django application.
This article explains how Django uses migrations to keep model definitions and database schemas synchronized. It covers the roles of makemigrations and migrate, the structure of each app’s migrations directory, migration dependencies and operations, inspection commands, data migrations, conflicts, common mistakes, and recommended development practices.
This article introduces Django’s request pipeline and explains how an HTTP request moves through the web server, WSGI or ASGI, middleware, URL resolution, views, forms, models, templates, and back as an HTTP response. It also covers authentication, sessions, CSRF, redirects, errors, static and media requests, debugging, and common request-handling mistakes.
This article introduces Django forms and explains how to collect, validate, clean, and process user input. It covers Form, ModelForm, fields, widgets, validation, cleaned_data, GET and POST handling, file uploads, CSRF protection, model creation and updates, class-based view integration, testing, and common mistakes.
This article introduces Django media handling and explains how to manage user-uploaded files such as images, documents, and attachments. It covers MEDIA_ROOT, MEDIA_URL, FileField, ImageField, upload forms, request.FILES, storage backends, validation, private media, production storage, file cleanup, testing, and common mistakes.
This article introduces Django static files and explains how to organize, reference, collect, and serve CSS, JavaScript, images, fonts, and other frontend assets. It covers app-level and project-level static directories, STATIC_URL, STATICFILES_DIRS, STATIC_ROOT, template usage, collectstatic, production serving, WhiteNoise, debugging, and common mistakes.
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