db_migrate.py

#!flask/bin/python
 Esto no funciona, pero habría que arreglarlo;


import imp
import os



from migrate.versioning import api
from app import db

# SQLAlchemy settings
SQLALCHEMY_DATABASE_URI = 'sqlite:///../app.sqlite'

basedir = os.path.abspath(os.path.dirname(__file__))

SQLALCHEMY_MIGRATE_REPO = os.path.join(basedir, 'db_repository')


# v = api.db_version(SQLALCHEMY_DATABASE_URI, SQLALCHEMY_MIGRATE_REPO)
v = 0
migration = SQLALCHEMY_MIGRATE_REPO + ('/versions/%03d_migration.py' % (v+1))
tmp_module = imp.new_module('old_model')
old_model = api.create_model(SQLALCHEMY_DATABASE_URI, SQLALCHEMY_MIGRATE_REPO)
exec(old_model, tmp_module.__dict__)
script = api.make_update_script_for_model(SQLALCHEMY_DATABASE_URI, SQLALCHEMY_MIGRATE_REPO, tmp_module.meta, db.metadata)
open(migration, "wt").write(script)
api.upgrade(SQLALCHEMY_DATABASE_URI, SQLALCHEMY_MIGRATE_REPO)
v = api.db_version(SQLALCHEMY_DATABASE_URI, SQLALCHEMY_MIGRATE_REPO)
print('New migration saved as ' + migration)
print('Current database version: ' + str(v))