new request statues events should be associated with latest revision

alembic/versions/e66a49285f23_add_relationship_between_revision_and_.py

@@ -0,0 +1,30 @@
+"""add relationship between revision and status event
+
+Revision ID: e66a49285f23
+Revises: 090e1bd0d7ce
+Create Date: 2018-09-04 14:01:31.548665
+
+"""
+from alembic import op
+import sqlalchemy as sa
+from sqlalchemy.dialects import postgresql
+
+# revision identifiers, used by Alembic.
+revision = 'e66a49285f23'
+down_revision = '090e1bd0d7ce'
+branch_labels = None
+depends_on = None
+
+
+def upgrade():
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.add_column('request_status_events', sa.Column('request_revision_id', postgresql.UUID(as_uuid=True), nullable=False))
+    op.create_foreign_key(None, 'request_status_events', 'request_revisions', ['request_revision_id'], ['id'])
+    # ### end Alembic commands ###
+
+
+def downgrade():
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.drop_constraint(None, 'request_status_events', type_='foreignkey')
+    op.drop_column('request_status_events', 'request_revision_id')
+    # ### end Alembic commands ###