Snippet

Django Class-Based Views with TemplateResponse

Class-Based Views (CBVs) in Django provide reusable, modular view components. ListView automatically handles pagination and template rendering for lists of objects. DetailView provides a clean way to display single objects by slug or primary key. LoginRequiredMixin adds authentication protection. The get_queryset() method allows dynamic filtering based on URL parameters or query strings.

snippet.py

python

from django.views.generic import ListView, DetailView
from django.shortcuts import get_object_or_404
from django.contrib.auth.mixins import LoginRequiredMixin
from .models import Book, Category
 
class BookListView(LoginRequiredMixin, ListView):
    model = Book
    template_name = 'books/book_list.html'
    context_object_name = 'books'
    paginate_by = 10
 
    def get_queryset(self):
        queryset = Book.objects.filter(is_published=True)
        category = self.request.GET.get('category')
        if category:
            queryset = queryset.filter(category__slug=category)
        return queryset.order_by('-published_date')
 
    def get_context_data(self, **kwargs):
        context = super().get_context_data(**kwargs)
        context['categories'] = Category.objects.all()
        return context
 
class BookDetailView(DetailView):
    model = Book
    template_name = 'books/book_detail.html'
    context_object_name = 'book'
    slug_field = 'slug'
    slug_url_kwarg = 'slug'

django

Breakdown

class BookListView(LoginRequiredMixin, ListView):

CBV combining authentication mixin with generic ListView functionality

paginate_by = 10

Django automatically paginates results, passing page object to template

def get_queryset(self):

Override to customize which objects are retrieved, with optional filtering

slug_field = 'slug'

DetailView uses the slug field to look up the Book instance

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Django Class-Based Views with TemplateResponse

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