/
migrator.go
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/
migrator.go
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package migrator
import (
"gorm.io/gorm"
"time"
)
var Db *gorm.DB
type Migration struct {
gorm.Model
Version string `json:"version"`
ExecutedAt *time.Time `json:"executed_at"`
}
func MigrateUp(db *gorm.DB) []Migration {
if db.Migrator().HasTable(Migration{}) {
versions, _ := GetVersions(db)
return versions
}
db.AutoMigrate(Migration{})
return nil
}
func GetVersions(db *gorm.DB) ([]Migration, error) {
var migrations []Migration
results := db.Model(&Migration{}).Find(&migrations)
return migrations, results.Error
}
func VersionExists(currentVersions []Migration, version string) bool {
for _, currentVersion := range currentVersions {
if currentVersion.Version == version {
return true
}
}
return false
}
func AddVersion(db *gorm.DB, version string) error {
now := time.Now()
migration := Migration{}
migration.Version = version
migration.ExecutedAt = &now
results := db.Create(&migration)
return results.Error
}