79 lines
2.4 KiB
Python
79 lines
2.4 KiB
Python
# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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"""Remove hierarchy for level values
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Revision ID: a86472389a70
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Revises: 0c586adad733
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Create Date: 2016-08-18 14:00:03.197693
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"""
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# revision identifiers, used by Alembic.
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revision = 'a86472389a70'
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down_revision = '0c586adad733'
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branch_labels = None
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depends_on = None
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from alembic import context
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from alembic import op
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import sqlalchemy as sa
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def upgrade():
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table_prefix = context.config.get_main_option('table_prefix')
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table_name = table_prefix + 'environment_hierarchy_level_value'
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with op.batch_alter_table(table_name) as batch:
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batch.drop_column('parent_id')
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batch.drop_constraint(
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table_name + '_level_id_fkey',
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type_='foreignkey'
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)
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batch.create_foreign_key(
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table_name + '_level_id_fkey',
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table_prefix + 'environment_hierarchy_level',
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['level_id'], ['id'], ondelete='CASCADE'
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)
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batch.create_unique_constraint(
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table_name + '_level_id_value_unique',
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['level_id', 'value']
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)
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def downgrade():
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table_prefix = context.config.get_main_option('table_prefix')
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table_name = table_prefix + 'environment_hierarchy_level_value'
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with op.batch_alter_table(table_name) as batch:
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batch.drop_constraint(
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table_name + '_level_id_value_unique',
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type_='unique'
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)
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batch.drop_constraint(
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table_name + '_level_id_fkey',
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type_='foreignkey'
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)
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batch.create_foreign_key(
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table_name + '_level_id_fkey',
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table_prefix + 'environment_hierarchy_level',
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['level_id'], ['id']
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)
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batch.add_column(sa.Column('parent_id', sa.Integer(), nullable=True))
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batch.create_foreign_key(
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table_name + '_parent_id_fkey',
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table_name,
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['parent_id'], ['id']
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)
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