29 Sep 2020

How To Write Class-Based Views With DRY Code Using Inheritance In Django?

Django has many rich amounts of features that it provides at its best. One of these is Class-Based Views. It provides an alternative way to implement views as Python objects instead of functions. They don’t replace function-based views, but have some advantages and differences compared to function-based views. Class-based views are simpler and efficient to manage than function-based views. The function-based view with multiple lines of code can be converted into a Class-based view with only a few lines of code. We’ll be going through a basic example of how to use it for the “DRY” (Don’t Repeat Yourself) code. In the end, you’ll save a lot of redundant code in your views file.

Requirements: Must be having a simple Django project setup in local.

Prerequisites: We will be using Template View in this example:

1. Set

This file is for all views and functions.

from django.views.generic import TemplateView

class Base(TemplateView):
#define functions
#define context function
#return context variable

class IndexView(Base): #Inheriting Base View
#define functions for index template
#define context function for index template
#return context variable of index template

2. Set

This file is for urls to be defined.

from .views import *
urlpatterns = [path('index/', IndexView.as_view(), name="index"),]

3. Set index.html

This file is for the html code.

<!doctype html>
<title> {{base_context_variable }} </title>
<h2> {{index_variables }} </h2>

In this tutorial, we learned how to write Class-based views with DRY code using inheritance in Django. This tutorial touched on the basics and focused very little on styling and extensibility.

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