db.NewRecord() return false when I insert something first time

[polyzy]

type Ip_distribution struct {
    Ip          string `gorm:"primary_key"`
}
type Ip struct {
    Ip     string
}

func (i *Ip_distribution) TableName() string {
    return "ip_distribution"
}

func main() {
    db, _ := gorm.Open("mysql", "abc:123@tcp(10.10.10.10:3306)/ramos?charset=utf8&loc=Local")
    item := Ip_distribution{Ip: "1.1.1.1"} 
    fmt.Println(db.NewRecord(item))
    db.Create(&item)
    fmt.Println(db.NewRecord(item))

The 1.1.1.1 doesn't exist in mysql before run this function. But the result is :

false
false

You know, it should return true when we execute db.NewRecord(item) first time. Is this a bug or I misused this function?

[adriendomoison]

+1 I have the same problem with object having string as primary_key !

[cage1016]

same issue +1

[jinzhu]

The NewRecord method only check if current value has primary key or not.

If you want to ensure this primary key exists in database, you need to query that like:

db.First(&Ip_distribution{}, "ip = ?", "1.1.1.1").RecordNotFound()

[SirWaithaka]

The comment on the method was confusing me too, thank you for clearing that out @jinzhu