Обновление приложения

backend/app/models/category.py

@@ -0,0 +1,26 @@
+from datetime import datetime
+from sqlalchemy import String, ForeignKey, DateTime, func
+from sqlalchemy.orm import Mapped, mapped_column, relationship
+from app.database import Base
+
+
+class Category(Base):
+    __tablename__ = "categories"
+
+    id: Mapped[int] = mapped_column(primary_key=True)
+    user_id: Mapped[int | None] = mapped_column(ForeignKey("users.id"), nullable=True, index=True)
+    name: Mapped[str] = mapped_column(String(200), nullable=False)
+    type: Mapped[str] = mapped_column(String(20), nullable=False)   # income | expense | transfer
+    parent_id: Mapped[int | None] = mapped_column(ForeignKey("categories.id"), nullable=True)
+    icon: Mapped[str | None] = mapped_column(String(50))
+    color: Mapped[str | None] = mapped_column(String(7))
+    created_at: Mapped[datetime] = mapped_column(DateTime(timezone=True), server_default=func.now())
+
+    user: Mapped["User | None"] = relationship("User", back_populates="categories")
+    parent: Mapped["Category | None"] = relationship(
+        "Category", remote_side="Category.id", back_populates="children"
+    )
+    children: Mapped[list["Category"]] = relationship("Category", back_populates="parent")
+    operations: Mapped[list] = relationship("Operation", back_populates="category")
+    budgets: Mapped[list] = relationship("Budget", back_populates="category")
+    calendar_events: Mapped[list] = relationship("CalendarEvent", back_populates="category")