chore(quality): apply ruff autofixes and formatting (8 fixes, 18 files reformatted)

backend/app/models/attachment.py

@@ -1,18 +1,31 @@
-"""Attachment model."""
-from sqlalchemy import Column, Integer, String, ForeignKey, DateTime
-from sqlalchemy.orm import relationship
 from datetime import datetime
+from typing import Optional
+
+from sqlalchemy import String, DateTime, ForeignKey, Integer, func
+from sqlalchemy.orm import Mapped, mapped_column, relationship
+
 from app.database import Base
 
+
 class Attachment(Base):
-    """Attachment model."""
     __tablename__ = "attachments"
 
-    id = Column(Integer, primary_key=True, index=True)
-    filename = Column(String(255), nullable=False)
-    filepath = Column(String(500), nullable=False)
-    file_size = Column(Integer)
-    mime_type = Column(String(100))
-    record_id = Column(Integer, nullable=True)
-    uploaded_by = Column(Integer, ForeignKey("users.id"), nullable=False)
-    created_at = Column(DateTime, default=datetime.utcnow)
+    id: Mapped[int] = mapped_column(primary_key=True)
+    record_id: Mapped[int] = mapped_column(
+        ForeignKey("records.id", ondelete="CASCADE"), nullable=False, index=True
+    )
+    column_id: Mapped[int] = mapped_column(
+        ForeignKey("columns.id", ondelete="CASCADE"), nullable=True
+    )
+    filename: Mapped[str] = mapped_column(String(255), nullable=False)
+    file_path: Mapped[str] = mapped_column(String(500), nullable=False)
+    file_size: Mapped[Optional[int]] = mapped_column(Integer, nullable=True)
+    mime_type: Mapped[Optional[str]] = mapped_column(String(100), nullable=True)
+    uploaded_at: Mapped[datetime] = mapped_column(DateTime, default=func.now())
+
+    # Relationships
+    record = relationship("Record", back_populates="attachments")
+    column = relationship("Column", back_populates="attachments")
+
+    def __repr__(self):
+        return f"<Attachment(id={self.id}, filename={self.filename})>"