full-stack-fastapi-template/backend/app/alembic/versions/1a31ce608336_add_cascade_delete_relationships.py at 20a410f735de742b3ece7e273eb146aa458db31b · fastapi/full-stack-fastapi-template · GitHub

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"""Add cascade delete relationships

Revision ID: 1a31ce608336
Revises: d98dd8ec85a3
Create Date: 2024-07-31 22:24:34.447891

"""
from alembic import op
import sqlalchemy as sa
import sqlmodel.sql.sqltypes


# revision identifiers, used by Alembic.
revision = '1a31ce608336'
down_revision = 'd98dd8ec85a3'
branch_labels = None
depends_on = None


def upgrade():
    # ### commands auto generated by Alembic - please adjust! ###
    op.alter_column('item', 'owner_id',
               existing_type=sa.UUID(),
               nullable=False)
    op.drop_constraint('item_owner_id_fkey', 'item', type_='foreignkey')
    op.create_foreign_key(None, 'item', 'user', ['owner_id'], ['id'], ondelete='CASCADE')
    # ### end Alembic commands ###


def downgrade():
    # ### commands auto generated by Alembic - please adjust! ###
    op.drop_constraint('item_owner_id_fkey', 'item', type_='foreignkey')
    op.create_foreign_key('item_owner_id_fkey', 'item', 'user', ['owner_id'], ['id'])
    op.alter_column('item', 'owner_id',
               existing_type=sa.UUID(),
               nullable=True)
    # ### end Alembic commands ###