Django interview questions and answers in 2022

This is an important Django framework interview question.

manage.py - A command-line utility for interacting with your Django project.

init .py - An empty file that instructs Python to treat the current directory as a Python package.

settings.py - Contains the current project's configurations, such as DB connections.

urls.py - This file contains all of the project's URLs.

wsgi.py - This is your application's entry point, which is utilized by web servers to serve the project you've constructed.

Templates are a critical component of the Django MVT design. They typically consist of HTML, CSS, and JavaScript, into which dynamic variables and information are injected via views. The template engine recognizes and interprets some constructs. Variables and tags are the most important.

A context is used to render a template. Rendering simply replaces variables with their values, exists in the context, and processes tags. Everything else remains the same.

The Django template language's syntax comprises the following four constructs:

• Variables
• Tags
• Filters
• Comments

This ORM (an acronym for Object Relational Mapper) allows us to interface with databases in a more pythonic fashion, such as avoiding writing raw queries and performing operations on the database without ever writing a SQL query. It acts as a layer of abstraction between the models and the database.

URLs are one of the most crucial components of a web application, and Django provides an attractive way to construct your own custom URLs with the assistance of its URLconf module (URL Configuration). The main purpose of this Python module is to allow you to create your own URLs in Django and then map them to the python function of your choice (View function). These URLs can be static or dynamic. These URLs are found in urls.py and are matched with the corresponding view function.

Jinja Templating is a popular Python templating engine; the most recent version is Jinja2.

Some of its characteristics are as follows:

• Sandbox Execution- This is a protected (or sandboxed) framework for automating the testing process.
• HTML Escaping- It provides automatic HTML Escaping because characters have special values in templates and if used in regular text, these symbols can lead to XSS attacks, which Jinja handles automatically.
• Template inheritance- It produces HTML templates at a considerably faster rate than the default engine. When compared to the default engine, it is easier to troubleshoot.

different model inheritance styles in Django are:

Abstract Base Class Inheritance: Used when the parent class is simply required to contain information that you do not wish to write for each child model.

Multi-Table Model Inheritance: Used when subclassing an existing model and each model requires its own database table.

Proxy Model Inheritance: Used when you want to keep the model's field while changing the model's python level functionality.

Django has a user authentication system that manages items such as users, groups, user permissions, and a few cookie-based user sessions. Django User authentication both authenticates and authorizes the user.

The system is made up of and operates on the following objects:

• Users
• Permissions
• Groups
• Password Hashing System
• Forms Validation
• A pluggable backend system

You may simply save and retrieve arbitrary data based on pre-site visitors using the session framework. It manages the process of sending and receiving cookies and keeps data on the server. Unless you expressly employ a cookie-based backend, these cookies just contain a session ID and no actual data.

As the name implies, this file stores the configurations or settings of our Django project, such as database configuration, backend engines, middlewares, installed applications, main URL configurations, static file addresses, templating engines, main URL configurations, security keys, allowed hosts, and much more.

The term "Field" refers to an abstract class that represents a column in a database table. The field is merely a subclass of RegisterLookupMixin. These attributes are utilized in Django to construct database tables (db types()) that are used to translate Python types to the database using get prep value() and the other way around using from db value(). As a result, fields are essential components of other Django APIs such as models and querysets.