43 lines
1.1 KiB
Python
43 lines
1.1 KiB
Python
|
"""users：language_preference 字段
|
|||
|
|
|
|||
|
|
Revision ID: 0018_users_language_preference
|
|||
|
|
Revises: 0017_segment_narrative_defer
|
|||
|
|
"""
|
|||
|
|
|
|||
|
|
from typing import Sequence, Union
|
|||
|
|
|
|||
|
|
import sqlalchemy as sa
|
|||
|
|
|
|||
|
|
from alembic import op
|
|||
|
|
|
|||
|
|
revision: str = "0018_users_language_preference"
|
|||
|
|
down_revision: Union[str, None] = "0017_segment_narrative_defer"
|
|||
|
|
branch_labels: Union[str, Sequence[str], None] = None
|
|||
|
|
depends_on: Union[str, Sequence[str], None] = None
|
|||
|
|
|
|||
|
|
|
|||
|
|
def _column_names(table_name: str) -> set[str]:
|
|||
|
|
bind = op.get_bind()
|
|||
|
|
inspector = sa.inspect(bind)
|
|||
|
|
return {column["name"] for column in inspector.get_columns(table_name)}
|
|||
|
|
|
|||
|
|
|
|||
|
|
def upgrade() -> None:
|
|||
|
|
columns = _column_names("users")
|
|||
|
|
if "language_preference" not in columns:
|
|||
|
|
op.add_column(
|
|||
|
|
"users",
|
|||
|
|
sa.Column(
|
|||
|
|
"language_preference",
|
|||
|
|
sa.String(length=8),
|
|||
|
|
nullable=False,
|
|||
|
|
server_default=sa.text("'zh'"),
|
|||
|
|
),
|
|||
|
|
)
|
|||
|
|
|
|||
|
|
|
|||
|
|
def downgrade() -> None:
|
|||
|
|
columns = _column_names("users")
|
|||
|
|
if "language_preference" in columns:
|
|||
|
|
op.drop_column("users", "language_preference")
|