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如何創建支持方言數據類型的遷移腳本?如何在SQLAlchemy-Migrate中使用方言類型(HSTORE)創建遷移腳本?
這裏有一個模型的例子:
db = SQLAlchemy()
class Event(db.Model):
__tablename__ = 'event'
id = db.Column(db.Integer, primary_key=True)
created_at = db.Column(db.DateTime, server_default=text('NOW()'), primary_key=True)
data = db.Column(HSTORE)
這裏的錯誤:
Column('data', HSTORE), NameError: name 'HSTORE' is not defined
附:我用的燒瓶SQLAlchemy的太
遷移腳本:
def migrate(db):
repo, uri = get_config(db)
migration = repo + '/versions/%03d_migration.py' % (
api.db_version(uri, repo) + 1)
tmp_module = imp.new_module('old_model')
old_model = api.create_model(uri, repo)
exec old_model in tmp_module.__dict__
script = api.make_update_script_for_model(uri, repo, tmp_module.meta, db.metadata)
open(migration, "wt").write(script)
api.upgrade(uri, repo)
print 'New migration saved as ' + migration
print 'Current database version: ' + str(api.db_version(uri, repo))
嘣!這是一個男生的錯誤:)我還使用了一個被破壞的自定義腳本......非常感謝 – DiogoNeves 2014-09-26 14:58:50