Has One和Has Many有什么區(qū)別 Belong To我有 3 個模型UserProfile哪里profile和user應該有one to one關系Categorycategory應該foreign key去哪里usertype User struct {gorm.ModelEmail *stringName string...}type Profile struct {gorm.ModelPhone stringAddress string...}type Category struct {gorm.ModelName string}
1 回答
DIEA
TA貢獻1820條經驗 獲得超2個贊
為了User Has One Profile
type User struct {
gorm.Model
Email *string
Name string
Profile Profile //this is the key different
}
type Profile struct {
gorm.Model
UserId int //this is important
Phone string
Address string
}
為了Profile Belong To User
type User struct {
gorm.Model
Email *string
Name string
}
type Profile struct {
gorm.Model
UserId int //this is important
User User //this is the key different
Phone string
Address string
}
為了User Has Many Category
type User struct {
gorm.Model
Email *string
Name string
CategoryList []Category
}
type Category struct {
gorm.Model
UserId int //this is important
Name string
}
編輯：UserId 字段將成為您的外鍵。
如果你想讓 gorm 自動為你創(chuàng)建表，你可以AutoMigrate在 main.go中使用
err := db.AutoMigrate(your_model_package.User{})
if err != nil {
return err
}
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