Django
Models
A Django model is a Python class describing one database table, each class attribute becomes a column.
Example: a Post model
# blog/models.py
from django.db import models
class Post(models.Model):
title = models.CharField(max_length=200)
body = models.TextField()
published_at = models.DateTimeField(auto_now_add=True)
def __str__(self):
return self.titlepython manage.py makemigrations
python manage.py migrateAfter changing a model, makemigrations generates a file
describing exactly what changed, and migrate actually
applies it to the database, creating a blog_post table with
title, body, and published_at
columns. This two-step cycle (generate, then apply) is deliberate: the
generated migration file is itself real, reviewable, version-controlled
code, so your whole team's database structure stays in sync through git,
not through someone remembering to run a manual SQL command.
# blog/models.py
from django.db import models
class Post(models.Model):
title = models.CharField(max_length=200)
body = models.TextField()
published_at = models.DateTimeField(auto_now_add=True)
def __str__(self):
return self.titlepython manage.py makemigrations && python manage.py migrate
creates a `blog_post` table with title, body, and published_at columns.