feat: residues accounting

models/client.py

@@ -1,10 +1,13 @@
-from typing import Optional
+from typing import Optional, TYPE_CHECKING
 
 from sqlalchemy import Column, Integer, String, DateTime, ForeignKey
 from sqlalchemy.orm import relationship, Mapped, mapped_column
 
 from models import BaseModel
 
+if TYPE_CHECKING:
+    from models import ResidualPallet, ResidualBox
+
 
 class Client(BaseModel):
     __tablename__ = 'clients'
@@ -28,6 +31,9 @@ class Client(BaseModel):
 
     comment: Mapped[Optional[str]] = mapped_column(nullable=True, server_default=None, comment='Комментарий')
 
+    pallets: Mapped[list["ResidualPallet"]] = relationship(back_populates='client', lazy='selectin')
+    boxes: Mapped[list["ResidualBox"]] = relationship(back_populates='client', lazy='selectin')
+
 
 class ClientDetails(BaseModel):
     __tablename__ = 'client_details'