silverstripe / silverstripe-cms

	 * @param SS_HTTPRequest $request

	 * @return array

	 */

	public function show($request) {

		$form = $this->ShowVersionForm($request->param('VersionID'));

		$negotiator = $this->getResponseNegotiator();

		$controller = $this;

		$negotiator->setCallback('CurrentForm', function() use(&$controller, &$form) {

			return $form ? $form->forTemplate() : $controller->renderWith($controller->getTemplatesWithSuffix('_Content'));

		});

		$negotiator->setCallback('default', function() use(&$controller, &$form) {

			return $controller->customise(array('EditForm' => $form))->renderWith($controller->getViewer('show'));

		});

		return $negotiator->respond($request);

	}

	/**

	 * @param SS_HTTPRequest $request

	 * @param SS_HTTPRequest $request

	 * @return array

	 */

	public function compare($request) {

		$form = $this->CompareVersionsForm(

			$request->param('VersionID'),

			$request->param('OtherVersionID')

		);

		$negotiator = $this->getResponseNegotiator();

		$controller = $this;

		$negotiator->setCallback('CurrentForm', function() use(&$controller, &$form) {

			return $form ? $form->forTemplate() : $controller->renderWith($controller->getTemplatesWithSuffix('_Content'));

		});

		$negotiator->setCallback('default', function() use(&$controller, &$form) {

			return $controller->customise(array('EditForm' => $form))->renderWith($controller->getViewer('show'));

		});

		return $negotiator->respond($request);

	}

	public function getSilverStripeNavigator() {

		$record = $this->getRecord($this->currentPageID(), $this->getRequest()->param('VersionID'));