实现余额购买接口 & 实现全局 id 生成器

web/models/refund.gen.go

@@ -15,12 +15,12 @@ const TableNameRefund = "refund"
 // Refund mapped from table <refund>
 type Refund struct {
 	ID        int32          `gorm:"column:id;primaryKey;autoIncrement:true;comment:退款ID" json:"id"`             // 退款ID
-	OrderID   int32          `gorm:"column:order_id;not null;comment:订单ID" json:"order_id"`                      // 订单ID
 	ProductID int32          `gorm:"column:product_id;comment:产品ID" json:"product_id"`                           // 产品ID
 	Amount    float64        `gorm:"column:amount;not null;comment:退款金额" json:"amount"`                          // 退款金额
 	CreatedAt time.Time      `gorm:"column:created_at;default:CURRENT_TIMESTAMP;comment:创建时间" json:"created_at"` // 创建时间
 	UpdatedAt time.Time      `gorm:"column:updated_at;default:CURRENT_TIMESTAMP;comment:更新时间" json:"updated_at"` // 更新时间
 	DeletedAt gorm.DeletedAt `gorm:"column:deleted_at;comment:删除时间" json:"deleted_at"`                           // 删除时间
+	TradeID   int32          `gorm:"column:trade_id;not null" json:"trade_id"`
 }
 
 // TableName Refund's table name