Adapt to old_id

internal/domains/product/entities/product.go

@@ -11,6 +11,7 @@ import (
 // Product 产品实体
 type Product struct {
 	ID          string          `gorm:"primaryKey;type:varchar(36)" comment:"产品ID"`
+	OldID       *string         `gorm:"type:varchar(36);index" comment:"旧产品ID，用于兼容"`
 	Name        string          `gorm:"type:varchar(100);not null" comment:"产品名称"`
 	Code        string          `gorm:"type:varchar(50);uniqueIndex;not null" comment:"产品编号"`
 	Description string          `gorm:"type:text" comment:"产品简介"`
@@ -94,4 +95,22 @@ func (p *Product) SetAsPackage() {
 
 func (p *Product) IsCombo() bool {
 	return p.IsPackage
+}
+
+// SetOldID 设置旧ID
+func (p *Product) SetOldID(oldID string) {
+	p.OldID = &oldID
+}
+
+// GetOldID 获取旧ID
+func (p *Product) GetOldID() string {
+	if p.OldID != nil {
+		return *p.OldID
+	}
+	return ""
+}
+
+// HasOldID 检查是否有旧ID
+func (p *Product) HasOldID() bool {
+	return p.OldID != nil && *p.OldID != ""
 }