Upload app/models/product.py

app/models/product.py

@@ -53,5 +53,8 @@ class Category(Base):
     name_en = Column(String(255), nullable=False)
     icon = Column(String(50), nullable=True)
     sort_order = Column(Integer, default=0, nullable=False)
+    parent_id = Column(Integer, ForeignKey("categories.id"), nullable=True)
 
+    parent = relationship("Category", remote_side=[id], back_populates="subcategories")
+    subcategories = relationship("Category", back_populates="parent", cascade="all, delete-orphan")
     products = relationship("Product", back_populates="category")