FormView – Class Based Views Django

FormView refers to a view (logic) to display and verify a Django Form. For example, a form to register users at GeeksforLazyroar. Class-based views provide an alternative way to implement views as Python objects instead of functions. They do not replace function-based views, but have certain differences and advantages when compared to function-based views: 

• The organization of code related to specific HTTP methods (GET, POST, etc.) can be addressed by separate methods instead of conditional branching.
• Object-oriented techniques such as mixins (multiple inheritances) can be used to factor code into reusable components.

Class-based views are simpler and more efficient to manage than function-based views. A function-based view with tons of lines of code can be converted into a class-based view with few lines only. This is where Object Oriented Programming comes into impact. 

Django FormView – Class-Based Views

Illustration of How to create and use FormView using an Example. Consider a project named Core having an app named books. 
 

Refer to the following articles to check how to create a project and an app in Django. 
 

• How to Create a Basic Project using MVT in Django?
• How to Create an App in Django ?

Folder Structure

 

Stepwise Implementation to create Class-Based Views

Step 1: Create a basic Project

Create a project by following the command

django-admin startproject core

• A New Folder with the name project name will be created.

Step 2: Creating an App in Django

To create a basic app in your Django project you need to go to the directory containing manage.py and from there enter the command:

python manage.py startapp books

Step 3: Go to core/URLs and set the path for our app.

 

Step 4: Go to core/setting and register our app name “books“.

 

Step 5: Paste this to your books/admin.py

from django.contrib import admin
from . import models


@admin.register(models.Books)
class AuthorAdmin(admin.ModelAdmin):
    prepopulated_fields = {'slug': ('title',), }

Step 6: Create a model in books/models.py.

 

Step 7: After you have a model, Let’s create a form in which we will be creating CreateView. In books/forms.py.

 

Step 8: After creating the form let’s create CreateView in Lazyroar/views.py, 

 

Step 9: Map a URL to this view in books/urls.py.

 

Step 10: Set Urls for books/urls.py

from django.urls import path
from .views import AddBookView

app_name = 'books'

urlpatterns = [
    path('', AddBookView.as_view(), name='add'),
]

Step 11: Create a template for this view in books/add.html, 

Step 12: Now run your app by the following command.

python manage.py runserver

Now visit http://127.0.0.1:8000/,