app/auth/group.go

package auth

import (
	"strings"
	"time"

	"gorm.io/gorm"
)

//Group enum of user permission groups
type Group struct {
	ID        uint `gorm:"primaryKey"`
	CreatedAt time.Time
	UpdatedAt time.Time

	// Name starting with '*' is reserved and starting with '_' is internal
	Name        string `gorm:"unique;not null"`
	DisplayName string
	Description string
	Users       []*User `gorm:"many2many:user_groups;"`

	//extra fields
	GRPF1 string
}

func (grp *Group) BeforeSave(tx *gorm.DB) (err error) {

	// set displayname
	if grp.DisplayName == "" {
		grp.DisplayName = strings.TrimPrefix(grp.Name, SYS_AUTH_PREFIX)
	}
	return
}