33 lines
1.3 KiB
Python
33 lines
1.3 KiB
Python
"""replace last_delete with next_delete
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Revision ID: e769c033e5c9
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Revises: 6d298e6406f2
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Create Date: 2017-08-14 20:51:02.248343
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"""
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from alembic import op
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import sqlalchemy as sa
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from sqlalchemy.dialects import postgresql
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# revision identifiers, used by Alembic.
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revision = 'e769c033e5c9'
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down_revision = '6d298e6406f2'
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branch_labels = None
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depends_on = None
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def upgrade():
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op.add_column('accounts', sa.Column('next_delete', sa.DateTime(), server_default='epoch', nullable=True))
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op.execute('UPDATE accounts SET next_delete = last_delete + policy_delete_every;')
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op.create_index(op.f('ix_accounts_next_delete'), 'accounts', ['next_delete'], unique=False)
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op.drop_index('ix_accounts_last_delete', table_name='accounts')
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op.drop_column('accounts', 'last_delete')
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def downgrade():
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op.add_column('accounts', sa.Column('last_delete', postgresql.TIMESTAMP(), server_default=sa.text("'1970-01-01 00:00:00'::timestamp without time zone"), autoincrement=False, nullable=True))
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op.execute('UPDATE accounts SET last__delete = next_delete - policy_delete_every;')
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op.create_index('ix_accounts_last_delete', 'accounts', ['last_delete'], unique=False)
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op.drop_index(op.f('ix_accounts_next_delete'), table_name='accounts')
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op.drop_column('accounts', 'next_delete')
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