This is a starter template for a Flask Python backend that is ready for use in development and production environments with minimal to no configuration.
You will need to set up a database for this web server template. Ideally, PostgreSQL or MySQL and not SQLite. You will need to have PostgreSQL/MySQL installed in order to install and run the matching Python libraries and instantiate a db connection.
- Install a RDBMS
- Create a database
- Install gunicorn (G-Unit Unicorn web server by 50 Cent)
- Install dependencies
- Start the server
Install your dependencies
Remember npm install from Zoom lecture? No? Well yeah, that was a thing!
pip install -r requirements.txt
Start the server
You could run flask run but this will not leverage a WSGI web server.
gunicorn app:app
These are the commands you'll be using the most often as you develop. I recommend you verify that your database is in the exact state you expect it to be after every step with SQL until you're reasonably certain about what's happening. Then you can move to every other step. Maybe.
flask db --help
flask db init
flask db current
flask db upgrade
flask db downgrade
- Make a change to the Model (example: add a new column/attribute)
- Run
flask db migrateto create a migration for this change - Run
flask db upgradeto apply the change to the database - Made a mistake? Run
flask db downgradeto reverse it