Django

Web Framework

The web framework for perfectionists with deadlines | Django

The Django framework adopts an MVT approach. The model is the data layer of the application. The view layer is responsible for processing the request and returning the response. The template is the presentation layer.

URL dispatcher is another crucial component of the Django architecture. The URL dispatcher is equivalent to Controller in the MVC architecture. The urls.py module in the Django project's package folder acts as the dispatcher.

It defines the URL patterns. Each URL pattern is mapped with a view function to be invoked when the client's request URL matches it.

The URL patterns defined in each app under the project are also included in it.

When the server receives a request in the form of a client URL, the dispatcher matches its pattern with the patterns available in the urls.py and routes the flow of the application toward its associated view.

Virtualenv will isolate your Python/Django setup on a per-project basis. This means that any changes you make to one website won't affect any others you're also developing.

Model-View-Template

MVT is like MVC, except the re is no Controller and the Django Server itself performs the controller functions.

In Django, View is a python function that takes a web request(HTTP GET/POST/DELETE/UPDATE) and applies the neccessary logic to generate a web response(STRING, JSON/XML, HTML,ERROR STATUS).

Django uses a template containing static HTML elements and special Python code to generate dynamic web pages.

Project Structure

• manage.py is a command line interface used to interact with the django project

• settings.py contains the settings and configurations for your django project.

• urls.py contains the URL and routing definitions of your Django app.

View

Function-based View

Pros	Cons
Simple and easy to understand	Difficult to extend or reuse
Explicit Code	Handles requests using conditional statements
Mainly built for a specific functionality	may increade code complexity

Class-based View

Pros	Cons
Reusable and Extendible	Code is harder to read
Handles requests using class methods	Implicit code is hidden from developers
Leverage built-in generic class-based views

Generic class-based View

• ListView: represents a list of objects

• DetailView: represents the details of an object

• FormView: represents a form for submitting data

• Group of Date views: handles date-based data

Deployment

WSGI	ASGI
Web Server Gateway Interface	Asynchronous Server Gateway Interface
Web Servers (Gunicorn, uWSGI, Apache, mod_wsgi)	Web Servers (Daphne, Hypercorn, Uvicorn)

30+ Django Interview Questions (2023) - InterviewBitInterviewBit