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"""add_prune_on_boot
Revision ID: f3d1c5d38b56
Revises: 164abbd708c
Create Date: 2017-08-04 17:31:23.124767
"""
# revision identifiers, used by Alembic.
revision = 'f3d1c5d38b56'
down_revision = '164abbd708c'
from alembic import op
import sqlalchemy as sa
from sqlalchemy.dialects.postgresql import ENUM
YESNO_NAME = 'yesno_values'
YESNO_VALUES = ['yes', 'no']
def upgrade():
############################# Enums ##############################
# yesno_values have already been created, so use postgres enum object
# type to get around "already created" issue - works okay with mysql
yesno_values = ENUM(*YESNO_VALUES, name=YESNO_NAME, create_type=False)
op.add_column('ps_contacts', sa.Column('prune_on_boot', yesno_values))
def downgrade():
if op.get_context().bind.dialect.name == 'mssql':
op.drop_constraint('ck_ps_contacts_prune_on_boot_yesno_values', 'ps_contacts')
op.drop_column('ps_contacts', 'prune_on_boot')
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