https://github.com/jamescurtin/demo-cookiecutter-flask
Example project auto-generated from the most recent commit to https://github.com/cookiecutter-flask/cookiecutter-flask
https://github.com/jamescurtin/demo-cookiecutter-flask
Last synced: 5 months ago
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Example project auto-generated from the most recent commit to https://github.com/cookiecutter-flask/cookiecutter-flask
- Host: GitHub
- URL: https://github.com/jamescurtin/demo-cookiecutter-flask
- Owner: jamescurtin
- License: mit
- Created: 2020-10-10T02:16:48.000Z (over 4 years ago)
- Default Branch: master
- Last Pushed: 2024-10-21T10:34:12.000Z (6 months ago)
- Last Synced: 2024-10-21T15:22:45.437Z (6 months ago)
- Language: Python
- Homepage:
- Size: 263 KB
- Stars: 46
- Watchers: 5
- Forks: 13
- Open Issues: 9
-
Metadata Files:
- Readme: README.md
- License: LICENSE
Awesome Lists containing this project
- jimsghstars - jamescurtin/demo-cookiecutter-flask - Example project auto-generated from the most recent commit to https://github.com/cookiecutter-flask/cookiecutter-flask (Python)
README
# My Flask App
A flasky app.
## Docker Quickstart
This app can be run completely using `Docker` and `docker compose`. **Using Docker is recommended, as it guarantees the application is run using compatible versions of Python and Node**.
There are three main services:
To run the development version of the app
```bash
docker compose up flask-dev
```To run the production version of the app
```bash
docker compose up flask-prod
```The list of `environment:` variables in the `docker compose.yml` file takes precedence over any variables specified in `.env`.
To run any commands using the `Flask CLI`
```bash
docker compose run --rm manage <>
```Therefore, to initialize a database you would run
```bash
docker compose run --rm manage db init
docker compose run --rm manage db migrate
docker compose run --rm manage db upgrade
```A docker volume `node-modules` is created to store NPM packages and is reused across the dev and prod versions of the application. For the purposes of DB testing with `sqlite`, the file `dev.db` is mounted to all containers. This volume mount should be removed from `docker compose.yml` if a production DB server is used.
Go to `http://localhost:8080`. You will see a pretty welcome screen.
### Running locally
Run the following commands to bootstrap your environment if you are unable to run the application using Docker
```bash
cd my_flask_app
pip install -r requirements/dev.txt
npm install
npm run-script build
npm start # run the webpack dev server and flask server using concurrently
```Go to `http://localhost:5000`. You will see a pretty welcome screen.
#### Database Initialization (locally)
Once you have installed your DBMS, run the following to create your app's
database tables and perform the initial migration```bash
flask db init
flask db migrate
flask db upgrade
```## Deployment
When using Docker, reasonable production defaults are set in `docker compose.yml`
```text
FLASK_ENV=production
FLASK_DEBUG=0
```Therefore, starting the app in "production" mode is as simple as
```bash
docker compose up flask-prod
```If running without Docker
```bash
export FLASK_ENV=production
export FLASK_DEBUG=0
export DATABASE_URL=""
npm run build # build assets with webpack
flask run # start the flask server
```## Shell
To open the interactive shell, run
```bash
docker compose run --rm manage shell
flask shell # If running locally without Docker
```By default, you will have access to the flask `app`.
## Running Tests/Linter
To run all tests, run
```bash
docker compose run --rm manage test
flask test # If running locally without Docker
```To run the linter, run
```bash
docker compose run --rm manage lint
flask lint # If running locally without Docker
```The `lint` command will attempt to fix any linting/style errors in the code. If you only want to know if the code will pass CI and do not wish for the linter to make changes, add the `--check` argument.
## Migrations
Whenever a database migration needs to be made. Run the following commands
```bash
docker compose run --rm manage db migrate
flask db migrate # If running locally without Docker
```This will generate a new migration script. Then run
```bash
docker compose run --rm manage db upgrade
flask db upgrade # If running locally without Docker
```To apply the migration.
For a full migration command reference, run `docker compose run --rm manage db --help`.
If you will deploy your application remotely (e.g on Heroku) you should add the `migrations` folder to version control.
You can do this after `flask db migrate` by running the following commands```bash
git add migrations/*
git commit -m "Add migrations"
```Make sure folder `migrations/versions` is not empty.
## Asset Management
Files placed inside the `assets` directory and its subdirectories
(excluding `js` and `css`) will be copied by webpack's
`file-loader` into the `static/build` directory. In production, the plugin
`Flask-Static-Digest` zips the webpack content and tags them with a MD5 hash.
As a result, you must use the `static_url_for` function when including static content,
as it resolves the correct file name, including the MD5 hash.
For example```html
```
If all of your static files are managed this way, then their filenames will change whenever their
contents do, and you can ask Flask to tell web browsers that they
should cache all your assets forever by including the following line
in ``.env``:```text
SEND_FILE_MAX_AGE_DEFAULT=31556926 # one year
```