feat 更新配置后更新数据库

product/option.go

@@ -1,6 +1,10 @@
 package product
 
-import "time"
+import (
+	productv1 "gitea.timerzz.com/kedaya_haitao/common/model/product"
+	"gorm.io/gorm"
+	"time"
+)
 
 type Option struct {
 	ID           uint          `gorm:"primary_key" json:"id"`
@@ -17,14 +21,37 @@ func (c *Controller) SaveOption(opt Option) {
 	if opt.Interval > 0 {
 		c.Option.Interval = opt.Interval
 	}
-	if opt.ExchangeRate > 0 {
+	var change bool
+	var oldFreight float64
+	if opt.ExchangeRate > 0 && opt.ExchangeRate != c.Option.ExchangeRate {
 		c.Option.ExchangeRate = opt.ExchangeRate
+		change = true
 	}
-	if opt.Freight > 0 {
+	if opt.Freight > 0 && opt.Freight != c.Option.Freight {
-		c.Option.Freight = opt.Freight
+		c.Option.Freight, oldFreight = opt.Freight, c.Option.Freight
+		change = true
 	}
 	opt.ID = 1
 	c.db.Updates(opt)
+	if change {
+		c.updateExchangeRateAndFreight(oldFreight)
+	}
+}
+
+func (c *Controller) updateExchangeRateAndFreight(oldFreight float64) {
+	var results []*productv1.Product
+	c.db.FindInBatches(&results, 20, func(tx *gorm.DB, batch int) error {
+		for _, result := range results {
+			if result.Freight == oldFreight {
+				result.Freight = c.Option.Freight
+			}
+			result.ExchangeRate = c.Option.ExchangeRate
+		}
+
+		// 保存对当前批记录的修改
+		tx.Save(&results)
+		return nil
+	})
 }
 
 func (c *Controller) GetOption() Option {