53 lines
2.2 KiB
Python
53 lines
2.2 KiB
Python
"""ORM model for invoice / proforma attachments (table `quote_attachments`).
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File bytes live in MinIO object storage; this table is the metadata record
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(``object_key`` points at the object inside the PROCUREMENT_MINIO_BUCKET).
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Multiple attachments per quote per kind are allowed (multi-file contract,
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no unique constraint on (quote_id, kind)).
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"""
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import uuid
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from datetime import datetime
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from sqlalchemy import BigInteger, CheckConstraint, DateTime, ForeignKey, Text, func
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from sqlalchemy.orm import Mapped, mapped_column, relationship
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from app.db.base import Base
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from app.models.catalog import _timestamptz, _uuid_pk
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from app.utils.serialization import to_iso
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class QuoteAttachment(Base):
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__tablename__ = "quote_attachments"
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__mapper_args__ = {"eager_defaults": True} # fetch onupdate=func.now() via RETURNING
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__table_args__ = (
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CheckConstraint("kind IN ('invoice', 'proforma')", name="ck_quote_attachments_kind"),
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)
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id: Mapped[uuid.UUID] = _uuid_pk()
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quote_id: Mapped[uuid.UUID] = mapped_column(ForeignKey("quotes.id", ondelete="CASCADE"), nullable=False)
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kind: Mapped[str] = mapped_column(Text, nullable=False) # "invoice" | "proforma"
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file_name: Mapped[str] = mapped_column(Text, nullable=False)
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mime_type: Mapped[str] = mapped_column(Text, nullable=False)
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size_bytes: Mapped[int] = mapped_column(BigInteger, nullable=False)
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object_key: Mapped[str] = mapped_column(Text, nullable=False) # MinIO key inside the bucket
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uploaded_at: Mapped[datetime] = mapped_column(
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DateTime(timezone=True), nullable=False, server_default=func.now()
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)
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created_at: Mapped[datetime] = _timestamptz()
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updated_at: Mapped[datetime] = mapped_column(
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DateTime(timezone=True), nullable=False, server_default=func.now(), onupdate=func.now()
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)
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quote: Mapped["Quote"] = relationship(lazy="raise")
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def to_dict(self) -> dict:
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return {
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"id": str(self.id),
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"quote_id": str(self.quote_id),
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"kind": self.kind,
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"file_name": self.file_name,
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"mime_type": self.mime_type,
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"size_bytes": self.size_bytes,
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"uploaded_at": to_iso(self.uploaded_at),
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}
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