fix 只修改部分字段

pkg/model/work.go

@@ -79,7 +79,7 @@ func (m *Work) UpdateApprovalContent(in *approval.CreateRequest, a *Approval) er
 	m.ReturnAt = in.Work.ReturnAt
 	m.ReceivedAt = in.Work.ReceivedAt
 
-	if err = DB.Save(m).Error; err != nil {
+	if err = DB.Model(&m).Updates(m).Error; err != nil {
 		return err
 	}