| # Licensed to the Apache Software Foundation (ASF) under one |
| # or more contributor license agreements. See the NOTICE file |
| # distributed with this work for additional information |
| # regarding copyright ownership. The ASF licenses this file |
| # to you under the Apache License, Version 2.0 (the |
| # "License"); you may not use this file except in compliance |
| # with the License. You may obtain a copy of the License at |
| # |
| # http://www.apache.org/licenses/LICENSE-2.0 |
| # |
| # Unless required by applicable law or agreed to in writing, |
| # software distributed under the License is distributed on an |
| # "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| # KIND, either express or implied. See the License for the |
| # specific language governing permissions and limitations |
| # under the License. |
| """add_last_saved_at_to_slice_model |
| |
| Revision ID: 6d20ba9ecb33 |
| Revises: 'f6196627326f' |
| Create Date: 2021-08-02 21:14:58.200438 |
| |
| """ |
| |
| # revision identifiers, used by Alembic. |
| revision = "6d20ba9ecb33" |
| down_revision = "f6196627326f" |
| |
| import sqlalchemy as sa |
| from alembic import op |
| from sqlalchemy.dialects import postgresql |
| |
| |
| def upgrade(): |
| with op.batch_alter_table("slices") as batch_op: |
| batch_op.add_column(sa.Column("last_saved_at", sa.DateTime(), nullable=True)) |
| batch_op.add_column(sa.Column("last_saved_by_fk", sa.Integer(), nullable=True)) |
| batch_op.create_foreign_key( |
| "slices_last_saved_by_fk", "ab_user", ["last_saved_by_fk"], ["id"] |
| ) |
| |
| # now do data migration, copy values from changed_on and changed_by |
| slices_table = sa.Table( |
| "slices", |
| sa.MetaData(), |
| sa.Column("changed_on", sa.DateTime(), nullable=True), |
| sa.Column("changed_by_fk", sa.Integer(), nullable=True), |
| sa.Column("last_saved_at", sa.DateTime(), nullable=True), |
| sa.Column("last_saved_by_fk", sa.Integer(), nullable=True), |
| ) |
| conn = op.get_bind() |
| conn.execute( |
| slices_table.update().values( |
| last_saved_at=slices_table.c.changed_on, |
| last_saved_by_fk=slices_table.c.changed_by_fk, |
| ) |
| ) |
| # ### end Alembic commands ### |
| |
| |
| def downgrade(): |
| with op.batch_alter_table("slices") as batch_op: |
| batch_op.drop_constraint("slices_last_saved_by_fk", type_="foreignkey") |
| batch_op.drop_column("last_saved_by_fk") |
| batch_op.drop_column("last_saved_at") |
| # ### end Alembic commands ### |