37 lines
1.2 KiB
Python
37 lines
1.2 KiB
Python
"""支持用户软删除并保留历史任务归属"""
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from typing import Sequence, Union
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from alembic import op
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import sqlalchemy as sa
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revision: str = "20260813_0023"
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down_revision: Union[str, None] = "20260812_0022"
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branch_labels: Union[str, Sequence[str], None] = None
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depends_on: Union[str, Sequence[str], None] = None
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def _columns(bind, table_name: str) -> set[str]:
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return {column["name"] for column in sa.inspect(bind).get_columns(table_name)}
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def upgrade() -> None:
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bind = op.get_bind()
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columns = _columns(bind, "users")
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if "deleted_at" not in columns:
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op.add_column("users", sa.Column("deleted_at", sa.DateTime(), nullable=True))
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op.create_index("ix_users_deleted_at", "users", ["deleted_at"])
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if "deleted_username" not in columns:
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op.add_column("users", sa.Column("deleted_username", sa.String(length=64), nullable=True))
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def downgrade() -> None:
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bind = op.get_bind()
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columns = _columns(bind, "users")
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if "deleted_username" in columns:
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op.drop_column("users", "deleted_username")
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if "deleted_at" in columns:
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op.drop_index("ix_users_deleted_at", table_name="users")
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op.drop_column("users", "deleted_at")
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