Flask: what happened to the script_info_option? - flask

Question

I wanted it to add common app-configuration options such as --config, --loglevel, --logfile, etc. to my flask.cli group and read them from the scriptinfo in my app factory function.
The #script_info_option decorator was apparently removed after 0.11 with a cryptic commit message like "implementing simplified interface".
So... how do I do add app-factory-time configuration options now?

Answer 1

Found out how you do it now:
Decorate your app factory with #click.pass_context so it gets the context as the first argument.
In the app factory, use ctx.find_root().params to get what was passed to the group.

Answer 2

You can create an app factory and pass arguments to it with the #pass_script_info decorator like so...
manage.py
#!/usr/bin/env python
import click
import config
from flask import Flask
from flask.cli import FlaskGroup, pass_script_info
def create_app(script_info):
app = Flask(__name__)
if script_info.config_mode:
obj = getattr(config, kwargs["config_mode"])
flask_config.from_object(obj)
...
return app
#click.group(cls=FlaskGroup, create_app=create_app)
#click.option('-m', '--config-mode', default="Development")
#pass_script_info
def manager(script_info, config_mode):
script_info.config_mode = config_mode
if __name__ == "__main__":
manager()
config.py
class Config(object):
TESTING = False
class Production(Config):
DATABASE_URI = 'mysql://user#localhost/foo'
class Development(Config):
DATABASE_URI = 'sqlite:///app.db'
class Testing(Config):
TESTING = True
DATABASE_URI = 'sqlite:///:memory:'
Now in the command line (after running pip install manage.py) you can do manage -m Production run.