Go Series: Learning How to Build a Web Service Using Go from Scratch Pt. 11 — Gorm and Repos

Last time we’ve created a model that we can use to marshal and unmarshal for JSON. It also acts as the object part of ORM for GORM.

type User struct {
  UUID         string `gorm:"primaryKey"`
  Name         string  `gorm:"column:user_name"` // set name to `user_name`
  Email        *string `gorm:"column:user_email"` // set name to `user_email`
  Age          uint8
  Birthday     *time.Time
  MemberNumber sql.NullString `gorm:"index"`
  ActivatedAt  sql.NullTime
  CreatedAt    time.Time `json:"userCreatedAt" gorm:"column:createdAt"`
  UpdatedAt    time.Time `json:"userUpdatedAt" gorm:"column:UpdatedAt; autoCreateTime"` // note that these configs are separated by ;
}

We’ve also talked about embedded structure. From the above, the CreatedAt and UpdatedAt can be used for all sorts of models, so it makes sense to separate them. Say we create a struct called Base that contains these two attributes. Then we embed it to our User struct

type Base struct {
  CreatedAt time.Time `json:"userCreatedAt" gorm:"column:createdAt"`
  UpdatedAt    time.Time `json:"userUpdatedAt" gorm:"column:UpdatedAt; autoCreateTime"`
}

type User struct {
  Base // embedded Base struct
  UUID         string `gorm:"primaryKey"`
  Name         string…