Release of v5.1.2-alpha3

Migrates view HTML classes to use getModel() directly instead of the deprecated magic get() calls to model methods. Refactores event handling (contentPrepare, titlePrepare, contentBeforeDisplay, contentAfterDisplay) to use Joomla 5’s native event dispatcher via the model’s new getDispatcher() method. Updates table classes to properly support NULL values, both in the store() method and in table variable definitions. #1245. Extractes the setAutoCheckIn() and setCheckInCall() logic into a dedicated CheckInNow class for cleaner design. Replace all direct $app->input property calls with the recommended $app->getInput() method across the entire codebase.

admin/compiler/joomla_4/ADMIN_AJAX_CONTROLLER.php

@@ -66,7 +66,7 @@ class AjaxController extends BaseController
 		// get the user for later use
 		$user         = $this->app->getIdentity();
 		// get the input values
-		$jinput       = $this->input ?? $this->app->input;
+		$jinput       = $this->input ?? (method_exists($this->app, 'getInput') ? $this->app->getInput() : $this->app->input);
 		// check if we should return raw (DEFAULT TRUE SINCE J4)
 		$returnRaw    = $jinput->get('raw', true, 'BOOLEAN');
 		// return to a callback function