gorm/callback_delete.go

43 lines
1.4 KiB
Go

package gorm
import "fmt"
// Define callbacks for deleting
func init() {
defaultCallback.Delete().Register("gorm:begin_transaction", beginTransactionCallback)
defaultCallback.Delete().Register("gorm:before_delete", beforeDeleteCallback)
defaultCallback.Delete().Register("gorm:delete", deleteCallback)
defaultCallback.Delete().Register("gorm:after_delete", afterDeleteCallback)
defaultCallback.Delete().Register("gorm:commit_or_rollback_transaction", commitOrRollbackTransactionCallback)
}
// beforeDeleteCallback will invoke `BeforeDelete` method before deleting
func beforeDeleteCallback(scope *Scope) {
if !scope.HasError() {
scope.CallMethod("BeforeDelete")
}
}
// deleteCallback used to delete data from database or set deleted_at to current time (when using with soft delete)
func deleteCallback(scope *Scope) {
if !scope.HasError() {
if !scope.Search.Unscoped && scope.HasColumn("DeletedAt") {
scope.Raw(
fmt.Sprintf("UPDATE %v SET deleted_at=%v %v",
scope.QuotedTableName(),
scope.AddToVars(NowFunc()),
scope.CombinedConditionSql(),
)).Exec()
} else {
scope.Raw(fmt.Sprintf("DELETE FROM %v %v", scope.QuotedTableName(), scope.CombinedConditionSql())).Exec()
}
}
}
// afterDeleteCallback will invoke `AfterDelete` method after deleting
func afterDeleteCallback(scope *Scope) {
if !scope.HasError() {
scope.CallMethod("AfterDelete")
}
}