rattail-tempmon/rattail_tempmon/db/alembic/versions/fd1df160539a_make_enabled_datetime.py

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# -*- coding: utf-8; -*-
"""make enabled datetime
Revision ID: fd1df160539a
Revises: a2676d3dfc1e
Create Date: 2019-01-25 18:41:01.652823
"""
from __future__ import unicode_literals, absolute_import
# revision identifiers, used by Alembic.
revision = 'fd1df160539a'
down_revision = 'a2676d3dfc1e'
branch_labels = None
depends_on = None
import datetime
from alembic import op
import sqlalchemy as sa
import rattail.db.types
def upgrade():
now = datetime.datetime.utcnow()
# client
op.add_column('client', sa.Column('new_enabled', sa.DateTime(), nullable=True))
client = sa.sql.table('client',
sa.sql.column('enabled'),
sa.sql.column('new_enabled'))
op.execute(client.update()\
.where(client.c.enabled == True)\
.values({'new_enabled': now}))
op.drop_column('client', 'enabled')
op.alter_column('client', 'new_enabled', new_column_name='enabled')
# probe
op.add_column('probe', sa.Column('new_enabled', sa.DateTime(), nullable=True))
probe = sa.sql.table('probe',
sa.sql.column('enabled'),
sa.sql.column('new_enabled'))
op.execute(probe.update()\
.where(probe.c.enabled == True)\
.values({'new_enabled': now}))
op.drop_column('probe', 'enabled')
op.alter_column('probe', 'new_enabled', new_column_name='enabled')
def downgrade():
# probe
op.add_column('probe', sa.Column('old_enabled', sa.Boolean(), nullable=True))
probe = sa.sql.table('probe',
sa.sql.column('enabled'),
sa.sql.column('old_enabled'))
op.execute(probe.update()\
.where(probe.c.enabled != None)\
.values({'old_enabled': True}))
op.execute(probe.update()\
.where(probe.c.enabled == None)\
.values({'old_enabled': False}))
op.drop_column('probe', 'enabled')
op.alter_column('probe', 'old_enabled', new_column_name='enabled', nullable=False)
# client
op.add_column('client', sa.Column('old_enabled', sa.Boolean(), nullable=True))
client = sa.sql.table('client',
sa.sql.column('enabled'),
sa.sql.column('old_enabled'))
op.execute(client.update()\
.where(client.c.enabled != None)\
.values({'old_enabled': True}))
op.execute(client.update()\
.where(client.c.enabled == None)\
.values({'old_enabled': False}))
op.drop_column('client', 'enabled')
op.alter_column('client', 'old_enabled', new_column_name='enabled', nullable=False)