from alembic import context
from sqlalchemy import engine_from_config, pool
from central.app.models import Base
from central.app.config import settings
config = context.config
target_metadata = Base.metadata
def run_migrations_online():
    config.set_main_option("sqlalchemy.url", settings.database_url)
    engine = engine_from_config(config.get_section(config.config_ini_section), prefix="sqlalchemy.", poolclass=pool.NullPool)
    with engine.connect() as connection:
        context.configure(connection=connection, target_metadata=target_metadata)
        with context.begin_transaction():
            context.run_migrations()
run_migrations_online()