$ python manage.py db create_admin
Traceback (most recent call last):
  File "manage.py", line 58, in <module>
    manager.add_command("create_admin", create_admin())
  File "manage.py", line 47, in create_admin
    confirmed_on=datetime.datetime.now()
  File "c:envsvirtalenvsflask_minilibsite-packagessqlalchemyormscoping.py", line 150, in do
    return getattr(self.registry(), name)(*args, **kwargs)
  File "c:envsvirtalenvsflask_minilibsite-packagessqlalchemyutil_collections.py", line 878, in __call__
    return self.registry.setdefault(key, self.createfunc())
  File "c:envsvirtalenvsflask_minilibsite-packagesflask_sqlalchemy__init__.py", line 704, in create_session
    return SignallingSession(self, **options)
  File "c:envsvirtalenvsflask_minilibsite-packagesflask_sqlalchemy__init__.py", line 149, in __init__
    self.app = db.get_app()
  File "c:envsvirtalenvsflask_minilibsite-packagesflask_sqlalchemy__init__.py", line 845, in get_app
    raise RuntimeError('application not registered on db '
RuntimeError: application not registered on db instance and no application bound to current context

import os
from flask_script import Manager
from myflaskapp.app import create_app
from myflaskapp.models.user import User
from myflaskapp.database import db

manager = Manager(app)

@manager.command
def create_admin():
    """Creates the admin user."""
    db.session.add(User(
        username="admin1",
        email="ad@min.com",
        password="admin",
        admin=True,
        confirmed=True,
        confirmed_on=datetime.datetime.now()
    )
    )
    db.session.commit()

manager.add_command("create_admin", create_admin())

manager.run()