sminnee / silverstripe-framework

	 * @param Member $member

	 * @return bool

	 */

	public function canViewStage($stage = 'Live', $member = null) {

		$oldMode = Versioned::get_reading_mode();

		Versioned::reading_stage($stage);

		$versionFromStage = DataObject::get($this->owner->class)->byID($this->owner->ID);

		Versioned::set_reading_mode($oldMode);

		return $versionFromStage ? $versionFromStage->canView($member) : false;

	}

	/**

	 * Determine if a table supports the Versioned extensions (e.g. $table_versions does exists).

	 * @param bool   $forceInsert Whether to force an INSERT query over an UPDATE query

	 * @return int The ID of the item being written

	 */

	public function writeToStage($stage, $forceInsert = false) {

		$oldMode = Versioned::get_reading_mode();

		Versioned::reading_stage($stage);

		$this->owner->forceChange();

		$result = $this->owner->write(false, $forceInsert);

		Versioned::set_reading_mode($oldMode);

		return $result;

	}

	/**

	 * Roll the draft version of this object to match the published one.