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Django Flask Web Frameworks

The course teaches Python developers how to build web applications with Django and Flask, covering fundamentals, REST API creation, testing, security, and architectural comparisons, enabling them to deliver authenticated CRUD solutions efficiently.

Who Should Take This

It is ideal for junior to mid‑level Python programmers, web developers, or data engineers who have basic Python proficiency and want to transition into full‑stack web development. Learners aim to master both frameworks, build secure RESTful services, and understand when to choose Django versus Flask for specific project needs.

What's Included in AccelaStudy® AI

Adaptive Knowledge Graph
Practice Questions
Lesson Modules
Console Simulator Labs
Exam Tips & Strategy
20 Activity Formats

Course Outline

60 learning goals
1 Django Fundamentals
7 topics

Project Structure and Configuration

  • Describe the Django project layout including settings.py, urls.py, wsgi.py, manage.py, and the distinction between projects and apps in Django's modular architecture
  • Implement Django project creation and app registration using django-admin startproject, startapp, and INSTALLED_APPS configuration for modular application design
  • Implement Django settings management using environment variables, django-environ, and settings module splitting for development versus production configurations

Django URL Routing and Views

  • Describe Django's URL dispatcher including urlpatterns, path() converters, include() for app-level routing, and the URL resolution order from root URLconf to app URLs
  • Implement function-based views that handle GET and POST requests, access URL parameters and query strings, and return HttpResponse objects with appropriate status codes
  • Implement class-based views using Django's generic views including ListView, DetailView, CreateView, UpdateView, and DeleteView for rapid CRUD interface development
  • Analyze the trade-offs between function-based views and class-based views in terms of flexibility, code reuse through mixins, and readability for different use case complexities

Django ORM and Models

  • Describe Django model field types including CharField, IntegerField, ForeignKey, ManyToManyField, and DateTimeField and explain how models map to database tables
  • Implement Django models with field definitions, Meta options, string representations, and relationships including ForeignKey, OneToOneField, and ManyToManyField
  • Implement Django ORM queries using the QuerySet API including filter, exclude, annotate, aggregate, select_related, and prefetch_related for efficient data retrieval
  • Implement database migrations using makemigrations and migrate commands and explain how Django tracks schema changes and resolves migration dependencies
  • Analyze the N+1 query problem in Django ORM and evaluate how select_related and prefetch_related optimize database access patterns for related object retrieval

Django Templates and Forms

  • Implement Django templates using template inheritance with extends and block tags, variable rendering, filters, and control flow with for and if template tags
  • Implement Django forms and ModelForms including field validation, custom clean methods, error display in templates, and CSRF protection for secure form handling
  • Describe Django's static file handling including STATIC_URL, STATICFILES_DIRS, collectstatic command, and the distinction between static and media files

Django Authentication and Middleware

  • Implement Django's built-in authentication system including login, logout, user registration, password hashing, and the @login_required decorator for view protection
  • Describe Django's middleware pipeline and explain the order of execution for request and response processing including SecurityMiddleware, SessionMiddleware, and AuthenticationMiddleware
  • Implement a custom Django middleware class with process_request and process_response methods for cross-cutting concerns such as request timing or custom header injection

Django Admin

  • Describe Django's built-in admin interface including model registration, list_display, list_filter, search_fields, and how the admin auto-generates CRUD interfaces from model definitions
  • Implement custom admin configurations using ModelAdmin including fieldsets, inlines, custom actions, and readonly_fields for tailored data management interfaces
  • Analyze the appropriate use of Django admin for internal tools versus building custom views and evaluate security considerations for exposing the admin in production

Django Signals and Managers

  • Implement custom model managers and QuerySet methods to encapsulate common query patterns and provide a clean API for model-level data access logic
  • Describe Django's permission system including model-level permissions, object-level permissions, and the has_perm method for fine-grained access control
  • Implement custom user models extending AbstractUser or AbstractBaseUser for applications requiring additional user fields or alternative authentication backends
  • Analyze the implications of changing the user model after initial migration and evaluate the recommended approach of defining a custom user model at project start
2 Flask Fundamentals
5 topics

Flask Application Structure

  • Describe Flask's minimal application structure including the Flask class instantiation, route decorators, development server, and the concept of a micro-framework
  • Implement the Flask application factory pattern using create_app() to support multiple configurations, testing, and modular application initialization
  • Implement Flask configuration management using config objects, environment-specific config classes, and instance folders for sensitive configuration data

Flask Routing and Views

  • Implement Flask route definitions using @app.route decorators with URL variables, type converters, HTTP method restrictions, and URL building with url_for()
  • Implement Flask request handling using the request object for accessing form data, JSON payloads, query parameters, headers, and file uploads
  • Implement Flask Blueprints to organize routes into modular components with their own templates, static files, and URL prefixes for large application structure

Flask Templates and Forms

  • Implement Jinja2 templates in Flask using template inheritance, variable interpolation, filters, macros, and control structures for dynamic HTML generation
  • Implement form handling in Flask using Flask-WTF with CSRF protection, field validators, custom validation methods, and error rendering in templates

Flask Extensions and Database

  • Implement Flask-SQLAlchemy for database models including column types, relationships, session management, and query building with the SQLAlchemy query interface
  • Implement Flask-Migrate (Alembic) for database schema migrations including init, migrate, and upgrade commands for version-controlled schema evolution
  • Implement Flask-Login for user session management including login_user, logout_user, current_user, and the @login_required decorator for route protection

Flask Error Handling and Context

  • Implement Flask error handlers using @app.errorhandler for custom 404, 500, and application-specific error pages with proper status code responses
  • Describe Flask's application context and request context including the g object, current_app proxy, and how context locals enable request-scoped data sharing
  • Implement Flask session management using the session object with signed cookies and explain how SECRET_KEY protects session data integrity
3 REST API Development
3 topics

Django REST Framework

  • Describe Django REST Framework components including serializers, viewsets, routers, and the browsable API and explain how they extend Django for API development
  • Implement DRF serializers including ModelSerializer with field selection, nested serializers, and custom validation for request data deserialization and response formatting
  • Implement DRF ViewSets with ModelViewSet and router auto-registration to create a complete CRUD API with pagination, filtering, and permission classes

Flask REST APIs

  • Implement RESTful API endpoints in Flask using jsonify for JSON responses, request.get_json() for payload parsing, and proper HTTP status code returns
  • Implement request validation and serialization in Flask APIs using marshmallow schemas for input validation, output formatting, and error message standardization

API Authentication

  • Describe REST API authentication methods including session auth, token auth, JWT, and API keys and explain how each method is implemented in Django REST Framework
  • Implement DRF token authentication with TokenAuthentication and permission classes including IsAuthenticated, IsAdminUser, and custom permission classes
  • Implement Flask API authentication using Flask-HTTPAuth or custom decorators for token-based authentication with proper error responses for unauthorized requests
  • Analyze authentication strategy selection for REST APIs and evaluate the trade-offs between stateless token auth and session-based auth for different client types
4 Testing and Security
3 topics

Testing Web Applications

  • Implement Django tests using TestCase with the test client for HTTP request simulation, database fixtures, and assertion methods for response status and content
  • Implement Flask tests using the test client with app.test_client(), test configuration, and pytest fixtures for isolated endpoint testing
  • Analyze testing strategies for web applications including unit tests for models, integration tests for views, and API tests for endpoint contracts and error handling

Web Security Practices

  • Describe common web security threats including CSRF, XSS, SQL injection, and clickjacking and explain how Django and Flask provide built-in protections against each
  • Implement secure practices including CSRF token usage, template auto-escaping, parameterized queries, secure cookie settings, and HTTPS enforcement in both frameworks

Template Comparison

  • Compare Django Template Language and Jinja2 syntax differences including variable access, template tags, filters, and template inheritance mechanisms
  • Implement custom template filters and tags in Django and custom Jinja2 filters in Flask for domain-specific output formatting and reusable template logic
5 Framework Comparison and Architecture
2 topics

Architectural Comparison

  • Compare Django's MVT pattern with Flask's approach to separation of concerns and evaluate how each framework's philosophy affects project organization and developer productivity
  • Evaluate the trade-offs between Django's batteries-included approach with built-in ORM, admin, and auth versus Flask's explicit extension selection for project requirements
  • Analyze project size and team considerations that favor Django versus Flask and evaluate the learning curve and ecosystem maturity differences between the frameworks

ORM Comparison

  • Compare Django ORM's ActiveRecord-style API with SQLAlchemy's Data Mapper pattern and evaluate their differences in query construction, relationship loading, and session management
  • Analyze migration strategies in Django (built-in) versus Flask (Alembic) and evaluate auto-detection capabilities, merge conflict resolution, and data migration support

Scope

Included Topics

  • Django web framework fundamentals including project structure, URL routing, views (function-based and class-based), templates with Django Template Language, ORM models with migrations, forms and model forms, authentication system, middleware, static files, and Django REST Framework basics
  • Flask micro-framework fundamentals including application factory pattern, routing with decorators, Jinja2 templates, request/response handling, blueprints, extensions (Flask-SQLAlchemy, Flask-Login, Flask-WTF), and RESTful API creation
  • Comparative analysis of Django's batteries-included philosophy versus Flask's micro approach including when to choose each framework, testing strategies with pytest and unittest, and common security practices

Not Covered

  • Async frameworks (FastAPI, Starlette, ASGI channels)
  • Deployment and server configuration (Gunicorn, Nginx, Docker)
  • Frontend JavaScript frameworks and SPAs
  • Advanced Django features (signals, custom management commands, celery tasks)
  • Database administration and raw SQL optimization

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