46 lines
1.2 KiB
Python
46 lines
1.2 KiB
Python
"""add preferred_language to users
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Revision ID: z002_pref_lang
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Revises: ca14c4ab10d9
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Create Date: 2026-05-08
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"""
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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 = "z002_pref_lang"
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down_revision: Union[str, None] = "ca14c4ab10d9"
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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 _column_names(bind, table_name: str) -> set[str]:
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inspector = sa.inspect(bind)
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return {column["name"] for column in inspector.get_columns(table_name)}
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def upgrade() -> None:
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bind = op.get_bind()
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column_names = _column_names(bind, "users")
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if "preferred_language" not in column_names:
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op.add_column(
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"users",
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sa.Column("preferred_language", sa.String(length=16), nullable=True),
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)
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op.execute(
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"UPDATE users SET preferred_language = 'en' WHERE preferred_language IS NULL"
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)
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op.alter_column("users", "preferred_language", nullable=False)
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def downgrade() -> None:
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bind = op.get_bind()
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column_names = _column_names(bind, "users")
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if "preferred_language" in column_names:
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op.drop_column("users", "preferred_language")
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