[sqllab] db migration - setting Database.allow_run_sync=True (#1174)

caravel/migrations/versions/eca4694defa7_sqllab_setting_defaults.py

@@ -0,0 +1,41 @@
+"""sqllab_setting_defaults
+
+Revision ID: eca4694defa7
+Revises: 5e4a03ef0bf0
+Create Date: 2016-09-22 11:31:50.543820
+
+"""
+from alembic import op
+from caravel import db
+from sqlalchemy.ext.declarative import declarative_base
+from sqlalchemy import (Column, Integer, Boolean)
+
+# revision identifiers, used by Alembic.
+revision = 'eca4694defa7'
+down_revision = '5e4a03ef0bf0'
+
+Base = declarative_base()
+
+
+class Database(Base):
+
+    """An ORM object that stores Database related information"""
+
+    __tablename__ = 'dbs'
+    id = Column(Integer, primary_key=True)
+    allow_run_sync = Column(Boolean, default=True)
+
+
+def upgrade():
+    bind = op.get_bind()
+    session = db.Session(bind=bind)
+
+    for obj in session.query(Database).all():
+        obj.allow_run_sync = True
+
+    session.commit()
+    session.close()
+
+
+def downgrade():
+    pass