Defining a model
To define the models for your app, modify the file models.py that was created in your app’s folder. The str() method tells Django how to represent data objects based on this model.
from django.db import models """A topic the user is learning about.""" class Topic(models.Model): text = models.CharField(max_length=200) date_added = models.DateTimeField( auto_now_add=True) def str(self): return self.text
Defining a model with a foreign key
class Entry(models.Model): """Learning log entries for a topic.""" topic = models.ForeignKey(Topic) text = models.TextField() date_added = models.DateTimeField( auto_now_add=True) def str(self): return self.text[:50] + "…"
Activating a model
To use a model the app must be added to the tuple
INSTALLED_APPS, which is stored in the project’s settings.py file
INSTALLED_APPS = ( --snip-- 'django.contrib.staticfiles', # My apps 'learning_logs', )
Migrating the database
The database needs to be modified to store the kind of data that the model represents.
python manage.py makemigrations learning_logs python manage.py migrate
Creating a superuser
A superuser is a user account that has access to all aspects of the project.
python manage.py createsuperuser
Registering a model
You can register your models with Django’s admin site, which
makes it easier to work with the data in your project. To do this,
modify the app’s admin.py file.
from django.contrib import admin
from learning_logs.models import Topic