Simple Counter App - Django Typing CST Test

Mode:

Duration:

Coding works best on desktop or with an external keyboard.

Simple Counter App — Django Code

Demonstrates a simple Django app with a counter using views, URL routing, and templates.

# views.py
from django.shortcuts import render
from django.http import HttpResponse

count = 0

def counter_view(request):
	global count
	if request.method == 'POST':
		action = request.POST.get('action')
		if action == 'increment':
		count += 1
		elif action == 'decrement':
		count -= 1
		elif action == 'reset':
		count = 0
	return render(request, 'counter.html', {'count': count})

# counter.html
"""
<!DOCTYPE html>
<html>
<head>
	<title>Django Counter</title>
</head>
<body>
	<h2>Counter: {{ count }}</h2>
	<form method="post">
		{% csrf_token %}
		<button name="action" value="increment">+</button>
		<button name="action" value="decrement">-</button>
		<button name="action" value="reset">Reset</button>
	</form>
</body>
</html>
"""

# urls.py
from django.urls import path
from .views import counter_view

urlpatterns = [
	path('counter/', counter_view),
]

Django Language Guide

Django is a high-level Python web framework that encourages rapid development, clean design, and pragmatic code. It includes built-in tools for ORM, authentication, routing, and templating.

Primary Use Cases

▸Building dynamic web applications and websites
▸Developing RESTful APIs with Django REST Framework
▸Rapid prototyping of web projects
▸CMS and admin dashboard applications
▸E-commerce and SaaS applications

Notable Features

▸Object-relational mapping (ORM) for database operations
▸Built-in authentication and user management
▸Automatic admin interface
▸Template system for HTML generation
▸URL routing and middleware support

Origin & Creator

Django was created by Adrian Holovaty and Simon Willison in 2005 at the Lawrence Journal-World newspaper.

Industrial Note

Django is used heavily in industries requiring rapid prototyping, content management systems, and scalable web applications, e.g., news, e-commerce, and SaaS.

Quick Explain

▸Django provides a full-stack web framework with batteries-included philosophy.
▸It uses Python and emphasizes reusability, rapid development, and security.
▸Supports ORM for database management, templating for HTML, and routing for URL mapping.
▸Includes built-in authentication, admin interface, and form handling.
▸Widely used for building web applications from simple sites to complex enterprise apps.

Core Features

▸Models for database tables and relationships
▸Views for request handling
▸Templates for dynamic HTML rendering
▸Forms for input validation and processing
▸Signals and middleware for extensibility

Learning Path

▸Learn Python basics
▸Understand Django project and app structure
▸Learn ORM and database models
▸Practice views, templates, and forms
▸Build full-featured web applications

Practical Examples

▸Blog website with admin dashboard
▸REST API with authentication
▸E-commerce store with cart system
▸Social networking site with user profiles
▸News portal with dynamic content management

Comparisons

▸Django vs Flask: Django is full-stack, Flask is lightweight
▸Django vs FastAPI: Django is synchronous and batteries-included, FastAPI is async and lightweight
▸Django vs Rails: Python vs Ruby, similar batteries-included philosophy
▸Django vs Express.js: Python backend vs Node.js backend
▸Django vs NestJS: Python full-stack vs Node.js modular TypeScript framework

Strengths

▸Rapid development with built-in components
▸Secure defaults against common web vulnerabilities
▸Scalable for high-traffic websites
▸Large and active community with many third-party packages
▸Comprehensive documentation and tutorials

Limitations

▸Monolithic design can feel heavy for microservices
▸Learning curve for ORM and templating system
▸Slower than lightweight frameworks like Flask for small apps
▸Not as async-native as FastAPI
▸Some defaults may require customization for complex architectures

When NOT to Use

▸Single-page apps with minimal backend logic
▸Microservices requiring async-heavy workloads
▸Projects where lightweight framework suffices
▸High-concurrency event-driven apps (FastAPI preferred)
▸Small scripts or static sites

Cheat Sheet

▸python manage.py startproject -> create project
▸python manage.py startapp -> create app
▸models.py -> define database tables
▸views.py -> define request handling
▸urls.py -> map URLs to views

FAQ

▸Is Django free?
▸Yes - open-source under BSD license.
▸Does Django include ORM?
▸Yes, built-in ORM supports multiple databases.
▸Is it suitable for large projects?
▸Yes - scalable with modular apps and caching.
▸Can Django handle REST APIs?
▸Yes, with Django REST Framework.
▸Is Django secure?
▸Yes, built-in protection for XSS, CSRF, SQL injection, and authentication.

30-Day Skill Plan

▸Week 1: Python and Django setup
▸Week 2: Models, views, and templates
▸Week 3: Forms and admin interface
▸Week 4: Django REST Framework APIs
▸Week 5: Deployment and scaling

Final Summary

▸Django is a full-stack Python web framework.
▸Includes ORM, templating, routing, authentication, and admin interface.
▸Encourages rapid development and secure defaults.
▸Scalable for enterprise and SaaS applications.
▸Ideal for developers needing batteries-included backend solutions.

Project Structure

▸project_name/ - project root and settings
▸app_name/ - app-specific models, views, templates
▸manage.py - CLI utility
▸templates/ - HTML templates
▸static/ - CSS, JS, images

Monetization

▸SaaS backends
▸E-commerce websites
▸Subscription-based content platforms
▸Ad-supported CMS or portals
▸Internal enterprise applications

Productivity Tips

▸Leverage Django admin for quick CRUD operations
▸Use template inheritance
▸Modularize apps for reuse
▸Automate testing
▸Use virtualenv and pip-tools for dependency management

Basic Concepts

▸Project: container for all settings and apps
▸App: modular component of a project
▸Model: database table representation
▸View: logic to process requests
▸Template: HTML rendering layer

Official Docs

More Django Typing Exercises

Django Form Submission Example Django Template Rendering Example Django URL Parameters Example Django Model Form Example Django List View Example Django Session Example Django Redirect Example Django Template Inheritance Example Django Static Files Example

Practice Other Languages

C React Python C++Rust TypeScript Kotlin PHP Java C#Ruby Mql Cql N1ql Cypher

Simple Counter App — Django Code

Demonstrates a simple Django app with a counter using views, URL routing, and templates.

# views.py from django.shortcuts import render from django.http import HttpResponse count = 0 def counter_view(request): global count if request.method == 'POST': action = request.POST.get('action') if action == 'increment': count += 1 elif action == 'decrement': count -= 1 elif action == 'reset': count = 0 return render(request, 'counter.html', {'count': count}) # counter.html """ <!DOCTYPE html> <html> <head> <title>Django Counter</title> </head> <body> <h2>Counter: {{ count }}</h2> <form method="post"> {% csrf_token %} <button name="action" value="increment">+</button> <button name="action" value="decrement">-</button> <button name="action" value="reset">Reset</button> </form> </body> </html> """ # urls.py from django.urls import path from .views import counter_view urlpatterns = [ path('counter/', counter_view), ]

Django Language Guide

Django is a high-level Python web framework that encourages rapid development, clean design, and pragmatic code. It includes built-in tools for ORM, authentication, routing, and templating.

Primary Use Cases

▸Building dynamic web applications and websites
▸Developing RESTful APIs with Django REST Framework
▸Rapid prototyping of web projects
▸CMS and admin dashboard applications
▸E-commerce and SaaS applications

Notable Features

▸Object-relational mapping (ORM) for database operations
▸Built-in authentication and user management
▸Automatic admin interface
▸Template system for HTML generation
▸URL routing and middleware support

Origin & Creator

Django was created by Adrian Holovaty and Simon Willison in 2005 at the Lawrence Journal-World newspaper.

Industrial Note

Django is used heavily in industries requiring rapid prototyping, content management systems, and scalable web applications, e.g., news, e-commerce, and SaaS.