I am adapting the component to the new structure and classes of joomla 4. I started with the admin panel of my component. The list and the edit page are displayed without errors, but when I try to use any toolbar buttons, I get a message.

Call to a member function getTable() on bool

Call stack
#   Function --- Location
1   () --- JROOT/libraries/src/MVC/Controller/FormController.php:307
2   Joomla\CMS\MVC\Controller\FormController->cancel() ---JROOT/libraries/src/MVC/Controller/BaseController.php:730
3   Joomla\CMS\MVC\Controller\BaseController->execute() --- JROOT/libraries/src/Dispatcher/ComponentDispatcher.php:146
4   Joomla\CMS\Dispatcher\ComponentDispatcher->dispatch() ---JROOT/libraries/src/Component/ComponentHelper.php:389
5   Joomla\CMS\Component\ComponentHelper::renderComponent() --- JROOT/libraries/src/Application/AdministratorApplication.php:143
6   Joomla\CMS\Application\AdministratorApplication->dispatch() --- JROOT/libraries/src/Application/AdministratorApplication.php:186
7   Joomla\CMS\Application\AdministratorApplication->doExecute() --- JROOT/libraries/src/Application/CMSApplication.php:278
8   Joomla\CMS\Application\CMSApplication->execute() --- JROOT/administrator/includes/app.php:63
9   require_once() --- JROOT/administrator/index.php:32

The controller is triggered, so is the model. The model has a getTable() function. Theoretically, everything works, but when 'save', 'closing', or 'save and close', I get the same error. At the same time, the chain of methods does not reach the component model.

JROOT/libraries/src/MVC/Controller/FormController has no access (or connection) to my model.
The path to the model is administrator/components/com_mycom/src/Model/NameModel.php. I don't understand what the reason is.


1 Answer 1


The solution has been found. My controller contained a __construct() function of this type:

class MyviewnameController extends FormController
    function __construct( $config = array() )
        $this->view_list = 'list';
        parent::__construct( $config );

I looked at the com_content component controller and saw that now __construct() contains additional parameters and added them. My problem was solved immediately.

class MyviewnameController extends FormController
    public function __construct($config=array(), MVCFactoryInterface $factory=null, $app=null, $input=null)
        parent::__construct($config, $factory, $app, $input);

        $this->view_list = 'list';

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