Code-Memo

Class-Based Views (CBVs)

Class-Based Views (CBVs) in Django offer a more modular and reusable way to handle requests compared to Function-Based Views (FBVs). They provide a clean way to organize view logic by leveraging object-oriented programming principles.

Basic Structure of a Class-Based View

A basic class-based view inherits from View and defines a method corresponding to the HTTP method (e.g., get, post).

from django.http import HttpResponse
from django.views import View

class HelloWorldView(View):
    def get(self, request):
        return HttpResponse("Hello, world!")

• HelloWorldView is a class that inherits from View.
• The get method handles GET requests and returns a simple HttpResponse.

URL Configuration for CBVs

In the urls.py file, use the as_view() method to include CBVs in URL patterns.

from django.urls import path
from .views import HomePageView, ContactView, ItemDetailView, ItemListView

urlpatterns = [
    path('', HomePageView.as_view(), name='home'),
    path('contact/', ContactView.as_view(), name='contact'),
    path('item/<int:pk>/', ItemDetailView.as_view(), name='item_detail'),
    path('items/', ItemListView.as_view(), name='item_list'),
]

• as_view() converts the class-based view into a view function.