34 lines
738 B
Python
34 lines
738 B
Python
"""Database base declarations."""
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from datetime import datetime, timezone
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from sqlalchemy import DateTime
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from sqlalchemy.orm import DeclarativeBase, Mapped, mapped_column
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def utc_now() -> datetime:
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"""Return the current UTC timestamp."""
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return datetime.now(timezone.utc)
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class Base(DeclarativeBase):
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"""Shared declarative base."""
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class TimestampMixin:
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"""Mixin that adds created and updated timestamps."""
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created_at: Mapped[datetime] = mapped_column(
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DateTime(timezone=True),
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default=utc_now,
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nullable=False,
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)
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updated_at: Mapped[datetime] = mapped_column(
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DateTime(timezone=True),
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default=utc_now,
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onupdate=utc_now,
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nullable=False,
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)
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