Defining models with fields in Django - Mini Project: Build & Apply

Defining Django Models with Fields

📖 Scenario: You are building a simple Django app to manage a library's book collection. Each book has a title, an author, and a number of pages.

🎯 Goal: Create a Django model called Book with fields for title, author, and pages.

📋 What You'll Learn

Create a Django model class named Book

Add a title field as a character field with max length 100

Add an author field as a character field with max length 50

Add a pages field as an integer field

💡 Why This Matters

🌍 Real World

Django models are used to define the structure of data in web applications, like books in a library system.

💼 Career

Understanding Django models is essential for backend web development jobs using Django framework.

1

Create the Book model class

Create a Django model class called Book that inherits from models.Model.

Django

from django.db import models

# Define the Book model class here
# Your code here

Need a hint?

Use class Book(models.Model): to start your model.

2

Add the title field

Inside the Book model, add a field called title using models.CharField with max_length=100.

Django

from django.db import models

class Book(models.Model):
    # Add the title field here
    # Your code here

Need a hint?

Use title = models.CharField(max_length=100) inside the class.

3

Add the author and pages fields

Add two more fields inside the Book model: author as a CharField with max_length=50, and pages as an IntegerField.

Django

from django.db import models

class Book(models.Model):
    title = models.CharField(max_length=100)
    # Add author and pages fields here
    # Your code here

Need a hint?

Use author = models.CharField(max_length=50) and pages = models.IntegerField().

4

Add string representation method

Add a __str__ method to the Book model that returns the title field.

Django

from django.db import models

class Book(models.Model):
    title = models.CharField(max_length=100)
    author = models.CharField(max_length=50)
    pages = models.IntegerField()
    # Add __str__ method here
    # Your code here

Need a hint?

Define def __str__(self): and return self.title.