sminnee / silverstripe-framework

	 *

	 * @return bool True if publish was successful

	 */

	public function publishSingle() {

		$owner = $this->owner;

		if(!$owner->canPublish()) {

			return false;

		}

		$owner->invokeWithExtensions('onBeforePublish');

		$owner->write();

		$owner->copyVersionToStage(static::DRAFT, static::LIVE);

		$owner->invokeWithExtensions('onAfterPublish');

		return true;

	}

	/**

	 * Set foreign keys of has_many objects to 0 where those objects were

	 *

	 * @return bool True if the revert was successful

	 */

	public function doRevertToLive() {

		$owner = $this->owner;

		if(!$owner->canRevertToLive()) {

			return false;

		}

		$owner->invokeWithExtensions('onBeforeRevertToLive');

		$owner->copyVersionToStage(static::LIVE, static::DRAFT, false);

		$owner->invokeWithExtensions('onAfterRevertToLive');

		return true;

	}

	/**

	 * Trigger revert of all owned objects to stage