Joomla 3 - инструменты поиска во frontend - Разработка расширений для Joomla 3.x

public static function getPaperOptions()
	{
		$options = array();

		$db = JFactory::getDbo();
		$query = $db->getQuery(true);
		$nullDate = $db->quote($db->getNullDate());
		$query->select('id As value, name As text')
			->from('#__classified_newspapers AS a')
			->where('a.state=1')
			->where('(' . $query->currentTimestamp(). ' >= a.publish_up OR a.publish_up = ' . $nullDate . ')')
			->where('(' . $query->currentTimestamp(). ' <= a.publish_down OR a.publish_down = ' . $nullDate . ')');
			//->order('a.name');

		// Get the options.
		$db->setQuery($query);

		try
		{
			$options = $db->loadObjectList();
		}
		catch (RuntimeException $e)
		{
			JError::raiseWarning(500, $e->getMessage());
		}

		// Merge any additional options in the XML definition.
		// $options = array_merge(parent::getOptions(), $options);

		array_unshift($options, JHtml::_('select.option', '0', JText::_('COM_CLASSIFIED_NO_NEWSPAPERS')));

		return $options;
	}

class JFormFieldNewsPaper extends JFormFieldList
	public function getOptions()
	{
		$options = NewsHelper::getPaperOptions();
		return array_merge(parent::getOptions(), $options);
	}

<?php echo JHtml::_('select.options', JHtml::_('category.options', 'com_helloworld'), 'value', 'text', $this->state->get('filter.category_id'));?>

echo JLayoutHelper::render('joomla.searchtools.default', array('view' => $this));

$this->filterForm    = $this->get('FilterForm');
$this->activeFilters = $this->get('ActiveFilters');