IsZeroValue(value) { nonZeroValues[field.Name] = value } } // Perform the update with the non-zero values return db.Model(model).Updates(nonZeroValues) } // Example usage func main() { db, err := gorm.Open(mysql.Open("dsn"), &gorm.Config{}) if err != nil { panic("...
// WARNING when update with struct, GORM will not update fields that with zero value func (s *DB) Update(attrs ...interface{}) *DB { return s.Updates(toSearchableMap(attrs...), true)} 如：type AA struct { ID int `gorm:"primary_key" json:" - "` //主键id Code1 s...
当update一个值是0的时候被忽略了不能使用结构体要使用map数据类型例如要改成这样 values := map[string]uint{ "Status": status
// GORM update zero value requires select() Where("goods = ? and verson = ?", inv.Goods, inv.Verson). Updates(model.Inventory{Stocks: inv.Stocks - g.Num, Verson: inv.Verson + 1}); result.RowsAffected == 0 { zap.S().Info("reducing stocks failed") } else { break } } } tx...
Added more documents about this in https://github.com/jinzhu/gorm/tree/v1.0_dev#update Feedback welcome in #794 jinzhu closed this as completed Feb 19, 2016 jinzhu changed the title UpdateColumns with zero value will update all field UpdateColumns with zero value will update all field Feb...
// Select("*")会更新所有字段,但update里面没有更新的字段值会被清空 db.Model(&user).Select("*").Updates(User{Name: "jinzhu", Role: "admin", Age: 0}) // Select all fields but omit Role (select all fields include zero value fields) ...
if _, isZero := pf.ValueOf(tx.Statement.Context, reflectValue); isZero { return tx.callbacks.Create().Execute(tx) } } } fallthrough default: selectedUpdate := len(tx.Statement.Selects) != 0 // when updating, use all fields including those zero-value fields ...
sql_mode=NO_ZERO_DATE,ERROR_FOR_DIVISION_BY_ZERO */ 使用CreateInBatches分批创建时,你可以指定每批的数量,例如: varstudent[20]Student t,_:=time.Parse("2024-01-10","1998-08-18")fori,_:=rangestudent{student[i].Name=fmt.Sprintf("贾维斯%d号",i)student[i].Birthday=t}fmt.Println(student...
GORM Playground Link go-gorm/playground#742 Description db.Save updates CreatedAt with a zero value. Then throws an error. Gorm should automatically handle CreatedAt and ignore zero values, right? db.Create sets UpdatedAt to the current ...
NOTE When querying with struct, GORM will only query with non-zero fields, that means if your field’s value is 0, '', false or other zero values, it won’t be used to build query conditions, for example: 代码语言:javascript 复制 var student Student // 当使用结构体作为查询条件,gorm...