Disable CreatedAt UpdatedAt DeletedAt Fields in GORM

I am usign GORM and I am mapping legacy tables.

By default GORM has this struct:

type Model struct {
        ID        uint      `gorm:"primarykey"`
        CreatedAt time.Time
        UpdatedAt time.Time
        DeletedAt DeletedAt `gorm:"index"`
}

I don't have CreatedAt UpdatedAt DeletedAt fields in the legacy table, I need to avoid or disable this default structure.

I can't find a way to avoid these columns.

Instead of creating your model as an embedded struct:

type MyModel struct {
  gorm.Model
  StringField  string
  IntField uint
}

You can create it using the declarations you mentioned in gorm.Model:

type MyModel struct {
  ID           uint `gorm:"primarykey"`
  StringField  string
  IntField     uint
}

You can avoid fields CreatedAt, UpdatedAt and DeletedAt by not specifying gorm.Model inside the struct.

You have to explicitly declare what these struct fields would look like in Gorm by adding gorm:"column_name" next to them.

Lets assume that your legacy table is called features and it has columns name and description. So your struct would be:

type Feature struct {
	Name        string `gorm:"column:name"`
	Description string `gorm:"column:description"`
}

Or, if this table is used for REST API in addition to ORM:

type Feature struct {
	Name        string `json:"name" gorm:"column:name"`
	Description string `json:"description" gorm:"column:description"`
}

You can disable the timestamp tracking by setting autoUpdateTime tag to false, for example: Source

  CreatedAt time.Time `gorm:"autoCreateTime:false"`
  UpdatedAt time.Time `gorm:"autoUpdateTime:false"`