Сохранение данных из формы - Модули и плагины

class BeskModelAdd_Product extends JModelForm
{

 protected $item;
 

 public function getForm($data = array(), $loadData = true){
    $form = $this->loadForm('com_besk.add_product', 'add_product', array('control' => 'jform', 'load_data' => true));
 
 
		if (empty($form)) {
			return false;
		}
		return $form;
    
} 

 public function getTable( $type = "besk", $prefix = 'BeskTable', $config = array() )         
	{
         
      return JTable::getInstance( $type, $prefix, $config );
                
	}


        protected function loadFormData()
	{
               
		$data = JFactory::getApplication()->getUserState( 'com_besk.edit.add_product.data', array() );
              
		return $data;
	}
         
        
             public function allowSave(){
		return true;
	}
}

<?php
defined('_JEXEC') or die('Restricted access');
JHtml::_('behavior.tooltip');
JHtml::_('behavior.formvalidation');

?>
 <form action="<?php echo JRoute::_('index.php?option=com_besk&view=add_product&id='.(int)$this->item->id); ?>" method="post" name="adminForm" id="add_product_form">      

<?php

foreach($this->form->getFieldset() as $field)
{
echo $field->label;
echo $field->input;
}
?>

    <div>
		<input type="hidden" name="task" value="add_product.save" />
		<?php echo JHtml::_('form.token'); ?>
		<button type="submit" class=""><?php echo JText::_('Submit'); ?></button>
			            <?php echo JHtml::_('form.token'); ?>
    </div>
</form>