Django Models Explained with Real-Life Examples

Loading…

Django Models Explained with Real-Life Examples · devs3

python

from django.db import models

class BlogPost(models.Model):
    title = models.CharField(max_length=200)
    content = models.TextField()
    published_date = models.DateTimeField(auto_now_add=True)
    author = models.CharField(max_length=100)

plaintext

| Field             | Description               |
| ----------------- | ------------------------- |
| `CharField`       | Short text                |
| `TextField`       | Long text                 |
| `IntegerField`    | Integer numbers           |
| `FloatField`      | Decimal numbers           |
| `DateTimeField`   | Date & time               |
| `BooleanField`    | True/False                |
| `ForeignKey`      | Many-to-One relationship  |
| `ManyToManyField` | Many-to-Many relationship |
| `OneToOneField`   | One-to-One relationship   |

python

from django.db import models
from django.contrib.auth.models import User

class BlogPost(models.Model):
    title = models.CharField(max_length=200)
    content = models.TextField()
    author = models.ForeignKey(User, on_delete=models.CASCADE)
    published_date = models.DateTimeField(auto_now_add=True)

class Comment(models.Model):
    post = models.ForeignKey(BlogPost, on_delete=models.CASCADE)
    author = models.CharField(max_length=100)
    content = models.TextField()
    created_at = models.DateTimeField(auto_now_add=True)

python

# Get all posts
posts = BlogPost.objects.all()

# Get posts by a specific author
posts = BlogPost.objects.filter(author__username='john')

# Get a single post
post = BlogPost.objects.get(id=1)

# Create a post
new_post = BlogPost.objects.create(title="Django Tips", content="Learn ORM", author=user)

Django Models Explained with Real-Life Examples

Introduction

What Is a Django Model?

Join the conversation

Comments

Django template show text to image runtime

🚀 Django দিয়ে Site Monitoring ও Mattermost Notification System

Field Types in Django Models

Real-Life Example: Blog App

Models

Understanding Relationships

1️⃣ One-to-Many (ForeignKey)

2️⃣ Many-to-Many (ManyToManyField)

3️⃣ One-to-One (OneToOneField)

Migrations: Sync Models to Database

Model Methods & Metadata

Adding a method

Adding Meta options

Querying Models with Django ORM

Best Practices

Final Thoughts

Introduction

What Is a Django Model?

Join the conversation

Comments

Keep reading

Django template show text to image runtime

🚀 Django দিয়ে Site Monitoring ও Mattermost Notification System

Field Types in Django Models

Real-Life Example: Blog App

Models

Understanding Relationships

1️⃣ One-to-Many (ForeignKey)

2️⃣ Many-to-Many (ManyToManyField)

3️⃣ One-to-One (OneToOneField)

Migrations: Sync Models to Database

Model Methods & Metadata

Adding a method

Adding Meta options

Querying Models with Django ORM

Best Practices

Final Thoughts