fix：Ppt排序

services/ppt/ppt_group.go

@@ -828,16 +828,16 @@ func MoveGroupPpt(groupId, groupPptId, prevGroupPptId, nextGroupPptId int64, adm
 	if prevGroupPpt != nil && prevGroupPpt.PptId > 0 && nextGroupPpt != nil && nextGroupPpt.PptId > 0 { // 两个之间
 		pptSort, _ = decimal.NewFromFloat(prevGroupPpt.PptSort).Add(decimal.NewFromFloat(nextGroupPpt.PptSort)).Div(decimal.NewFromInt(2)).Float64()
 	} else if prevGroupPpt != nil && prevGroupPpt.PptId > 0 {
-		minSort, err := models.GetMinSortByGroupId(prevGroupPpt.GroupId)
-		if err != nil {
-			err = errors.New("获取最小排序失败:" + err.Error())
+		minSort, tmpErr := models.GetMinSortByGroupId(prevGroupPpt.GroupId)
+		if tmpErr != nil {
+			err = errors.New("获取最小排序失败:" + tmpErr.Error())
 			return
 		}
 		pptSort, _ = decimal.NewFromFloat(minSort).Add(decimal.NewFromInt(1)).Float64()
 	} else if nextGroupPpt != nil && nextGroupPpt.PptId > 0 {
-		maxSort, err := models.GetMaxSortByGroupId(prevGroupPpt.GroupId)
-		if err != nil {
-			err = errors.New("获取最小排序失败:" + err.Error())
+		maxSort, tmpErr := models.GetMaxSortByGroupId(prevGroupPpt.GroupId)
+		if tmpErr != nil {
+			err = errors.New("获取最小排序失败:" + tmpErr.Error())
 			return
 		}
 		pptSort, _ = decimal.NewFromFloat(maxSort).Sub(decimal.NewFromInt(1)).Float64()