Django — Models

Basic Model

# blog/models.py
from django.db import models

class Post(models.Model):
    title = models.CharField(max_length=200)
    content = models.TextField()
    author = models.ForeignKey('auth.User', on_delete=models.CASCADE)
    created_at = models.DateTimeField(auto_now_add=True)
    updated_at = models.DateTimeField(auto_now=True)
    published = models.BooleanField(default=False)
    
    def __str__(self):
        return self.title
    
    class Meta:
        ordering = ['-created_at']

Field Types

Field	Description
CharField	Short text
TextField	Long text
IntegerField	Whole number
FloatField	Decimal number
BooleanField	True/False
DateField	Date
DateTimeField	Date and time
EmailField	Email address
URLField	URL
ImageField	Image upload
FileField	File upload
ForeignKey	One-to-many
ManyToManyField	Many-to-many
OneToOneField	One-to-one

Field Options

title = models.CharField(
    max_length=200,
    unique=True,
    blank=False,
    null=False,
    default='Untitled',
    verbose_name='Post Title',
    help_text='Enter the post title'
)

Relationships

class Author(models.Model):
    name = models.CharField(max_length=100)

class Post(models.Model):
    author = models.ForeignKey(Author, on_delete=models.CASCADE)
    tags = models.ManyToManyField('Tag')

class Tag(models.Model):
    name = models.CharField(max_length=50)

Meta Class

class Post(models.Model):
    class Meta:
        verbose_name = 'Blog Post'
        verbose_name_plural = 'Blog Posts'
        ordering = ['-created_at']
        db_table = 'blog_posts'

Mini Practice

1. Create a basic model
2. Add different field types
3. Create model relationships
4. Use the Meta class

Up Next

Continue with Model Fields — field types and options.