$name == null) { if(!$this->id) { return null; } if($name == "creator") { $this->creator = new User($this->create_by); return $this->creator; } if($name == "editor") { $this->editor = new User($this->edit_by); return $this->editor; } if($name == "histories") { $this->histories=FilestoreHistoryModel::search(["filestore_id$filter"=>$this->id]); return $this->histories; } $classname = ucfirst($name); $idfield = $name."_id"; $this->$name = new $classname($this->$idfield); if($this->$name->id) { return $this->$name; } else { return null; } } return $this->$name; } }