First half

[flask-test.git] / db_migrate.py

diff --git a/db_migrate.py b/db_migrate.py
new file mode 100755 (executable)
index 0000000..f5fce56
--- /dev/null
+++ b/db_migrate.py
@@ -0,0 +1,17 @@
+#!flask/bin/python
+import imp
+from migrate.versioning import api
+from app import db
+from config import SQLALCHEMY_DATABASE_URI
+from config import SQLALCHEMY_MIGRATE_REPO
+v = api.db_version(SQLALCHEMY_DATABASE_URI, SQLALCHEMY_MIGRATE_REPO)
+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))