Files
budget-tracker/backend/app/models/budget.py
T
2026-03-17 16:16:08 +00:00

48 lines
1.4 KiB
Python

import uuid
from datetime import datetime
from typing import TYPE_CHECKING
from sqlalchemy import (
CheckConstraint,
DateTime,
ForeignKey,
Integer,
String,
UniqueConstraint,
Uuid,
func,
)
from sqlalchemy.orm import Mapped, mapped_column, relationship
from app.database import Base
if TYPE_CHECKING:
from app.models.category import Category
class Budget(Base):
__tablename__ = "budgets"
__table_args__ = (
UniqueConstraint("user_id", "category_id", "month", name="uq_budgets_user_category_month"),
CheckConstraint("limit_cents > 0", name="ck_budgets_limit_positive"),
)
id: Mapped[uuid.UUID] = mapped_column(Uuid, primary_key=True, default=uuid.uuid4)
user_id: Mapped[uuid.UUID] = mapped_column(
Uuid, ForeignKey("users.id", ondelete="CASCADE"), nullable=False, index=True
)
category_id: Mapped[uuid.UUID] = mapped_column(
Uuid, ForeignKey("categories.id"), nullable=False
)
# Format YYYY-MM
month: Mapped[str] = mapped_column(String(7), nullable=False)
limit_cents: Mapped[int] = mapped_column(Integer, nullable=False)
created_at: Mapped[datetime] = mapped_column(
DateTime(timezone=False), nullable=False, server_default=func.now()
)
updated_at: Mapped[datetime] = mapped_column(
DateTime(timezone=False), nullable=False, server_default=func.now()
)
category: Mapped["Category"] = relationship("Category", lazy="raise")