Book Image

Django 4 for the Impatient

By : Greg Lim, Daniel Correa
Book Image

Django 4 for the Impatient

By: Greg Lim, Daniel Correa

Overview of this book

Learning Django can be a tricky and time-consuming activity. There are hundreds of tutorials, loads of documentation, and many explanations that are hard to digest. However, this book enables you to use and learn Django in just a couple of days. In this book, you’ll go on a fun, hands-on, and pragmatic journey to learn Django full stack development. You'll start building your first Django app within minutes. You'll be provided with short explanations and a practical approach that cover some of the most important Django features, such as Django Apps’ structure, URLs, views, templates, models, CSS inclusion, image storage, authentication and authorization, Django admin panel, and many more. You'll also use Django to develop a movies review app and deploy it to the internet. By the end of this book, you'll be able to build and deploy your own Django web applications.
Table of Contents (14 chapters)

Managing migrations

Migrations allow us to generate a database schema based on model code. Once we make changes to our models (such as adding a field and renaming a field), new migrations should be created. In the end, migrations allow us to have a trace of the evolution of our database schema (as a version control system).

Currently, note a message in the Terminal when you run the server:

"You have 18 unapplied migration(s). Your project may not work properly until you apply the migrations for app(s): admin, auth, contenttypes, sessions.
Run 'python migrate' to apply them."

As per the message instructions, run the following.

For macOS, run this:

python3 migrate

For Windows, run this:

python migrate

The migrate command creates an initial database based on Django's default settings. Note that there is a db.sqlite3 file in the project root folder. The file represents our SQLite database. It is created the...