CODEWITHSUNDEEP
mysqlgogo-gorm
Amanda
Amanda

Reputation: 2163

Why does foreign key not get generated with GORM?

I am trying to create a foreign key on the Password table which must point to the id column inside the User table. But as I try the following, it does not work. The foreign key is not generated. It simply adds the column name user_id inside the password table.

package schema

import (
"github.com/jinzhu/gorm"
_ "github.com/jinzhu/gorm/dialects/mysql"
)

type User struct {
    gorm.Model
    FirstName string `gorm:"not null"`
    LastName string `gorm:"not null"`
    Email string `gorm:"type:varchar(100);unique_index"`
    IsActive bool `gorm:"not null"`
    IsVerified bool `gorm:"not null"`
}

type Password struct {
    gorm.Model
    Password string `gorm:"not null"`
    UserId int `gorm:"not null"`
    User User `gorm:"foreignkey:UserId;association_foreignkey:id"`
}


func SyncDB(db *gorm.DB) {

    db.AutoMigrate(&User{})
    db.AutoMigrate(&Password{})
}

What am I doing wrong? How could I make a foreign key inside Password table pointing to User table?

Upvotes: 1

Views: 3113

Answers (2)

Bilal Koçoğlu
Bilal Koçoğlu

Reputation: 47

try this.

type Password struct {
   gorm.Model
   Password string `gorm:"not null"`
   UserId int `gorm:"not null"`
   User User `gorm:"foreignkey:UserId;references:id"`
}

Upvotes: -1

Mike Sallese
Mike Sallese

Reputation: 827

I think you need:

db.Model(&Password{}).AddForeignKey("user_id", "users(id)", "RESTRICT", "RESTRICT")

I put mine after my auto migrate statement like so

db.AutoMigrate(&User{}, &Password{})
db.Model(&Password{}).AddForeignKey("user_id", "users(id)", "RESTRICT", "RESTRICT")

Let me know if this helps.

Upvotes: 2

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