27 lines
794 B
Python
27 lines
794 B
Python
from datetime import datetime, timezone
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from sqlalchemy import MetaData, event
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from sqlalchemy.orm import DeclarativeBase
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NAMING_CONVENTION = {
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"ix": "ix_%(column_0_label)s",
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"uq": "uq_%(table_name)s_%(column_0_name)s",
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"ck": "ck_%(table_name)s_%(constraint_name)s",
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"fk": "fk_%(table_name)s_%(column_0_name)s_%(referred_table_name)s",
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"pk": "pk_%(table_name)s",
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}
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class Base(DeclarativeBase):
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metadata = MetaData(naming_convention=NAMING_CONVENTION)
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@event.listens_for(Base, "before_update", propagate=True)
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def _set_updated_at_before_update(_mapper, _connection, target) -> None:
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# Keep audit timestamps current for ORM-managed updates.
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if hasattr(target, "updated_at"):
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target.updated_at = datetime.now(timezone.utc)
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metadata = Base.metadata
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