Django Newsletter
Introduction to Django
What is Django?
Django is a high-level Python web framework designed to facilitate the rapid development of secure, maintainable, and scalable websites. It was first publicly released in July 2005 and is maintained by the Django Software Foundation[4][5].
Key Features of Django
- Rapid Development: Django follows the "Batteries included" philosophy, providing almost everything developers need out of the box. This includes ready-to-use features like user authentication, content administration, site maps, and RSS feeds[2][3][5].
- Reusability and DRY Principle: Django emphasizes the reusability of components and adheres to the "Don't Repeat Yourself" (DRY) principle, reducing the amount of code needed[1][2][4].
-
Model-View-Template (MVT) Architecture: Django uses the MVT pattern, which consists of:
-
Model: Represents the data and is typically defined in
models.py
. It uses Object Relational Mapping (ORM) to interact with the database[1][2][4]. -
View: Handles HTTP requests and returns the relevant template and content. Views are defined in
views.py
[1][2][3]. -
Template: Defines the layout of the web page and is usually an HTML file with Django tags for logic. Templates are located in a
templates
folder[1][2][5].
-
Model: Represents the data and is typically defined in
How Django Works
-
Request and Response Cycle: When a user requests a URL, Django checks the
urls.py
file to determine which view to call. The view then uses the relevant models to retrieve data and sends this data to a template, which generates the final HTML content[1][2][3]. -
URL Mapping: Django uses a URL mapper to map URLs to view functions. This is defined in the
urls.py
file[1][2].
Security and Scalability
- Built-in Security: Django provides protection against common web vulnerabilities such as SQL injection, cross-site scripting, and cross-site request forgery by default[3][4].
- Scalability: Django's component-based architecture allows it to scale easily by adding hardware at any level, such as caching servers, database servers, or application servers[3][4].
Additional Features
- Administrative Interface: Django includes a dynamic administrative interface that is generated automatically through introspection and configured via admin models[4][5].
- Template Engine: Django uses its own template language and supports alternatives like Jinja2. The template engine processes the template file and creates the final HTML output[2][5].
- Community and Support: Django has a large, active community and extensive documentation, making it a well-supported framework[3][5].
Real-World Usage
Django is used by several high-profile websites, including Instagram, Mozilla, Disqus, Bitbucket, Nextdoor, and Clubhouse, demonstrating its capability to handle large-scale and complex web applications[4][5].
Resources
For more detailed information, you can refer to the following resources:
- [Introduction to Django - W3Schools][1]
- [What is Django? - AWS][2]
- [Django introduction - Learn web development | MDN][3]
- [Django (web framework) - Wikipedia][4]
- [What Is Django? | IBM][5]
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