// Check the view access to the article (the model has already computed the values).
    if ($item->params->get('access-view') == false && ($item->params->get('show_noauth', '0') == '0'))
    {
        JError::raiseWarning(403, JText::_('JERROR_ALERTNOAUTHOR'));
        return;
    }

// Compute view access permissions.
if ($access = $this->getState('filter.access'))
{
    // If the access filter has been set, we already know this user can view.
    $data->params->set('access-view', true);
}
else
{
    // If no access filter is set, the layout takes some responsibility for display of limited information.
    $user = JFactory::getUser();
    $groups = $user->getAuthorisedViewLevels();

    if ($data->catid == 0 || $data->category_access === null)
    {
        $data->params->set('access-view', in_array($data->access, $groups));
    }
    else
    {
        $data->params->set('access-view', in_array($data->access, $groups) && in_array($data->category_access, $groups));
    }
}