54 lines
1.7 KiB
Python
54 lines
1.7 KiB
Python
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"""add three-way favourite policy
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Revision ID: 2bd33abe291c
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Revises: 583cdac8eba1
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Create Date: 2018-01-03 17:31:03.718648
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"""
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from alembic import op
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import sqlalchemy as sa
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# revision identifiers, used by Alembic.
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revision = '2bd33abe291c'
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down_revision = '583cdac8eba1'
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branch_labels = None
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depends_on = None
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transitional = sa.table('accounts',
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sa.column('policy_keep_favourites'),
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sa.column('old_policy_keep_favourites'))
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def upgrade():
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ThreeWayPolicyEnum = sa.Enum('keeponly', 'deleteonly', 'none',
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name='enum_3way_policy')
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op.alter_column('accounts', 'policy_keep_favourites',
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new_column_name='old_policy_keep_favourites')
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op.add_column(
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'accounts',
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sa.Column('policy_keep_favourites', ThreeWayPolicyEnum,
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nullable=False, server_default='none'))
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op.execute(transitional.update()
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.where(transitional.c.old_policy_keep_favourites)
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.values(policy_keep_favourites=op.inline_literal('keeponly')))
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op.drop_column('accounts', 'old_policy_keep_favourites')
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def downgrade():
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op.alter_column('accounts', 'policy_keep_favourites',
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new_column_name='old_policy_keep_favourites')
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op.add_column(
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'accounts',
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sa.Column('policy_keep_favourites', sa.Boolean(),
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nullable=False, server_default='f'))
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op.execute(transitional.update()
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.where(transitional.c.old_policy_keep_favourites == op.inline_literal('keeponly'))
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.values(policy_keep_favourites=op.inline_literal('t')))
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op.drop_column('accounts', 'old_policy_keep_favourites')
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