31 lines
1.1 KiB
Python
31 lines
1.1 KiB
Python
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"""Sequence model — document numbering / Nummernkreise."""
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from __future__ import annotations
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import uuid
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from datetime import datetime
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from sqlalchemy import DateTime, Index, Integer, String
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from sqlalchemy.dialects.postgresql import UUID as PGUUID
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from sqlalchemy.orm import Mapped, mapped_column
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from app.core.db import Base, TenantMixin
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class Sequence(Base, TenantMixin):
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"""Sequence entity for document numbering (e.g. invoice RE-2026-0001)."""
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__tablename__ = "sequences"
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__table_args__ = (
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Index("ix_sequences_tenant_name", "tenant_id", "name"),
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)
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id: Mapped[uuid.UUID] = mapped_column(
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PGUUID(as_uuid=True), primary_key=True, default=uuid.uuid4
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)
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name: Mapped[str] = mapped_column(String(100), nullable=False)
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prefix: Mapped[str] = mapped_column(String(20), nullable=False, default="")
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next_number: Mapped[int] = mapped_column(Integer, nullable=False, default=1)
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padding: Mapped[int] = mapped_column(Integer, nullable=False, default=4)
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deleted_at: Mapped[datetime | None] = mapped_column(DateTime(timezone=True), nullable=True)
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