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eryao/backend/alembic/versions/20260416_0003_add_notification_target_mode.py
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"""add target_mode to notifications
Revision ID: 20260416_0003
Revises: 20260416_0002
Create Date: 2026-04-16
"""
from typing import Sequence, Union
from alembic import op
import sqlalchemy as sa
revision: str = "20260416_0003"
down_revision: Union[str, Sequence[str], None] = "20260416_0002"
branch_labels: Union[str, Sequence[str], None] = None
depends_on: Union[str, Sequence[str], None] = None
def upgrade() -> None:
op.add_column(
"notifications",
sa.Column(
"target_mode",
sa.String(32),
nullable=False,
server_default="all_users",
),
)
op.execute(
"ALTER TABLE notifications ADD CONSTRAINT ck_notifications_target_mode "
"CHECK (target_mode IN ('new_users', 'exist_users', 'all_users', 'user_ids'))"
)
def downgrade() -> None:
op.execute("ALTER TABLE notifications DROP CONSTRAINT ck_notifications_target_mode")
op.drop_column("notifications", "target_mode")