Django Interview questions and Answers

Django is an extreme level web application framework which is entirely based over python. As it is written in python, it is also an open-source web application framework which makes web application development quick and efficient. It is one of the most preferred web application development frameworks in the industry. Django also supports less coding and it is suitable for faster development and pragmatic design.

The most essential technical features of Django are-

• Admin interface
• ORM
• A large number of third party application
• Number of security features
• CDN integration
• Admin interface

Django is actually of preloaded interface designed to fulfill the requirement of web developers. Basically, it indicates any requirements for the web developer to make other admin because the whole process is time-consuming and costly. Django admin interface supports user authentication and follows most of the included features. The application Django admin is imported from the Django.contrib package. This imported application is also expected to get control by the corresponding organization hence it does not require an additional front end.

The Django admin interface provides a number of advanced features like-

• Authorization access
• Managing multiple models
• Content management system

Django offers maximum code reusability to the developers as compared to other frameworks. This framework is also a collection of various applications including login application or signup application. With the help of this framework, a large number of applications can directly be copied from one directory to the next following some of the settings.py files. With this framework, developers can easily work over the application without writing the new sign up application. This is the reason which supports the rapid development framework in Django and there are no other compatible frameworks supporting this level of code reusability.

The Django framework of the complicated project includes a collection of a number of web applications which mutually co-ordinate to serve the user request. These applications have their own corresponding features which are required to be completed by the same.

Its basic structure contains the following files:

• Manage.py
• Settings.py
• __init___.py
• Urls.py
• Wsgi.py

This question is one of the most important Django interview questions.

Let's assume a user entering any of the URLs in a browser, the same request will be received on the Django server. Once the request is generated, the server will find for the match of the corresponding URL in its URL-config. If the URL matches from the request then it will return the same findings for corresponding view function. Right after the return of the URL, a request is sent to the model of application for data. If the data is required then it will pass the corresponding template for further rendering in the browser. In case this doesn't happen then it will show 404 server errors.

Django admin interface easily supports the customization and developer can download various other third-party applications and install them in a completely different view. Also, if the developer wants overall control over their admin then they can make their own admin application. The admin site can also be customized for example changing the properties of admin.site.object. this admin interface also supports the changes in modifications in models and to apply them in Django admin for specific applications. The Django admin interface supports customization exact from the lowest level and the developer can also create new admin interfaces.

As Django follows MTV architecture it is called loosely coupled framework by the developers. It is based on the architecture which is a suitable variant of MVC framework and MTV is beneficial as it provides a separate server code from the third person's machine. The component in industry work is different from each other and that's why front end or backend developers work simultaneously for any tasks.

This is a majorly asked Django interview question.

Django Rest Framework (DRF) is an efficient framework which allows the developer to create RESTful APIs quickly. A number of big enterprises have supported its funding and the reason for its popularity is features like serialization, web browsable API and authentication policies.

RESTful APIs are extremely beneficial for web developers to build web applications as they consume the lowest bandwidth and their design in such a way to communicate well with the internet mainly like PUT, POST, GET, etc.

The Django framework is based upon MVC- MVT architecture where MVT stands for the model view template design pattern while MVC stands for model view controller pattern.

To get the URI in Django template we will use
{{ request.path }} then {{ request.get_full_path }}

Mixins refer to special multiple inheritances supported and developed by Python.

It is mainly used under two circumstances-

• When you have to provide a number of features for any class
• To utilize any one specific number of different classes.

Context refers to a dictionary containing multiple variable names which are in the form of key or value. When this context is passed to the temperature render method the variable gets replaced with templates.

Iterators are mostly used for travelers in the object in python framework implementing iterator protocol.

This comprises of two methods which are-

• __iter__()
• next ()

The most recommended way to install the Django framework in your system is by using pip.

The follows the steps as-

• Firstly install pip
• Now configure virtualenv and virtualenvwrapper

As you have created and activated the virtual environment now you have to enter the command - pip installs Django.

Middleware is a function which transforms a user request or response as it passes through the view layer.

Its utilization is-

• Can be used for session management
• For user authentication
• It also helps in cross-site request forgery production
• Content Gzipping.

Django was created in the year 2003 when web programmers Adrian Holovaty and Simon Willison were using python for application development. Because of its popularity, it got publicly released in the year 2005 under the BSD.

Officially Django supports for database backends which are-

• PostgreSQL
• MySQL
• SQLite
• Oracle

• SAP SQL Anywhere
• IBM DB2
• Microsoft SQL Server
• Firebird
• ODBC

In order to create a constant in Django, we have to open the settings.py file and then a variable has to be added into it, for example: MY_CONST = "MY_VALUE". In order to utilize it constantly in views you just have to import the settings "import settings in views.py" and use it- Settings.MY_CONST

Django as a web development framework is extremely beneficial for developers to build effective web applications. Written in python it is an open-source and free web application framework which was built to deal with intensive designing. Later it was used by the developers to build supreme quality web applications as it strictly follows the DRY principle and only focuses on automation.

Django framework has a number of significant advantages for development majority of them are

• Django provides auto-generated web admin to help developers build website administration simple.
• It also provides prepackaged API which helps in general user tasks.
• Under this framework, business logic can be segmented from HTML
• It can divide the code module into simpler logical groups to make the process flexible for modifications
• In this framework, a template system is provided for defining an HTML template to avoid code duplication.

This is most repeatedly asked Django interview questions.

No, Django is not a content management system rather it is a web development framework or a programming tool which helps the developers to build decent websites.

The inheritance styles in Django are 3 in number-

• Abstract base classes: This inheritance style is used by the developer when they want parents class to retain the data which you do not want to type out for every single child model.
• Multi-table inheritance: This inheritance style is used if you want to subclass on an existing model and each of the models to have its own database table.
• Proxy models: This inheritance style allows the user to modify the python level behavior without actually modifying the model's field.

The major steps to set up static files in Django are-

• Set STATIC_ROOT in settings.py
• Now run manage.py collect static
• Setup static files entry on pythonanywhere web tat.

This is one of the major Django interview questions and answers.

At present, Django has grown to be a powerful and robust framework which are utilized by a number of platforms. The websites which are using this framework to create high traffic are-

• Instagram
• Mozilla
• Spotify
• NASA
• Eventbrite
• YouTube