Django Models
6 min read Quiz at the end
Define models with field types, validators, ForeignKey, ManyToMany, and Meta options.
Django Models
from django.db import models
from django.contrib.auth import get_user_model
User = get_user_model()
class Post(models.Model):
title = models.CharField(max_length=255)
slug = models.SlugField(unique=True)
body = models.TextField()
author = models.ForeignKey(User, on_delete=models.CASCADE, related_name="posts")
tags = models.ManyToManyField("Tag", blank=True)
is_draft = models.BooleanField(default=True)
published_at= models.DateTimeField(null=True, blank=True)
created_at = models.DateTimeField(auto_now_add=True)
updated_at = models.DateTimeField(auto_now=True)
class Meta:
ordering = ["-created_at"]
verbose_name_plural = "posts"
def __str__(self):
return self.title
def get_absolute_url(self):
from django.urls import reverse
return reverse("blog:post-detail", kwargs={"slug": self.slug})
Topic Quiz · 3 questions
Test your understanding before moving on
1. Which field auto-sets time when a record is created?
💡 auto_now_add=True sets the field to current datetime only when first created.
2. What does on_delete=models.CASCADE mean?
💡 CASCADE automatically deletes related child records when parent is deleted.
3. What is the Meta class inside a model used for?
💡 class Meta defines metadata like default ordering and verbose names.