DetailView for single objects in Django - Mini Project: Build & Apply

DetailView for Single Objects in Django

📖 Scenario: You are building a simple Django web app to show details of books in a library. Each book has a title, author, and description. You want to create a page that shows the details of one book when a user visits its URL.

🎯 Goal: Build a Django DetailView to display information about a single book object.

📋 What You'll Learn

Create a Django model called Book with fields title, author, and description.

Create a URL pattern to access a book detail page by its pk.

Create a Django DetailView class called BookDetailView to show one book.

Create a simple HTML template to display the book's title, author, and description.

💡 Why This Matters

🌍 Real World

Detail views are common in websites to show full information about one item, like a product page or user profile.

💼 Career

Understanding Django's DetailView is essential for backend web development jobs using Django framework.

1

Create the Book model

Create a Django model called Book in models.py with these exact fields: title as CharField(max_length=100), author as CharField(max_length=100), and description as TextField().

Django

# Your code here to define the Book model

Need a hint?

Use models.CharField for short text and models.TextField for longer text.

2

Add URL pattern for Book detail

In urls.py, import BookDetailView and add a URL pattern with path 'books/<int:pk>/' that uses BookDetailView.as_view() and name it 'book-detail'.

Django

from django.db import models

class Book(models.Model):
    title = models.CharField(max_length=100)
    author = models.CharField(max_length=100)
    description = models.TextField()

# Your code here to add URL pattern for BookDetailView

Need a hint?

Use path with <int:pk> to capture the book's primary key.

3

Create the BookDetailView class

In views.py, import DetailView from django.views.generic and Book model. Create a class called BookDetailView that inherits from DetailView. Set its model attribute to Book.

Django

from django.db import models
from django.urls import path
from .views import BookDetailView

class Book(models.Model):
    title = models.CharField(max_length=100)
    author = models.CharField(max_length=100)
    description = models.TextField()

urlpatterns = [
    path('books//', BookDetailView.as_view(), name='book-detail'),
]

# Your code here to create BookDetailView

Need a hint?

Set the model attribute inside your BookDetailView class.

4

Create the template for BookDetailView

Create a template file named book_detail.html inside your app's templates folder. Use the object context variable to display the book's title, author, and description inside appropriate HTML tags.

Django

from django.db import models
from django.urls import path
from django.views.generic import DetailView
from .models import Book

class Book(models.Model):
    title = models.CharField(max_length=100)
    author = models.CharField(max_length=100)
    description = models.TextField()

urlpatterns = [
    path('books//', BookDetailView.as_view(), name='book-detail'),
]

class BookDetailView(DetailView):
    model = Book

# Your code here: create book_detail.html template with title, author, description

Need a hint?

Use double curly braces {{ }} to show object fields in the template.