<?php

// Check to ensure this file is included in Joomla!
defined('_JEXEC') or die( 'Restricted access' );

jimport('joomla.application.component.modellist');

class NivoSliderModelSliders extends JModelList
{
	public function __construct($config = array())
	{
		if (empty($config['filter_fields'])) {
			$config['filter_fields'] = array(
				'id', 'a.id',
				'title', 'a.title',
				'alias', 'a.alias',
				'ordering', 'a.ordering',
				'published', 'a.published',
				'access', 'a.access', 'access_level',
			);
		}

		parent::__construct($config);
	}
	
	protected function populateState($ordering = null, $direction = null)
	{
		// Initialise variables.
		$app = JFactory::getApplication();

		$published = $this->getUserStateFromRequest($this->context.'.filter.published', 'filter_published', '');
		$this->setState('filter.published', $published);

		$category = $this->getUserStateFromRequest($this->context.'.filter.category', 'filter_category', '');
		$this->setState('filter.category', $category);
		
		// List state information.
		parent::populateState('a.title', 'asc');
	}

	protected function getStoreId($id = '')
	{
		// Compile the store id.
		$id	.= ':'.$this->getState('filter.published');
		$id	.= ':'.$this->getState('filter.category');
		
		return parent::getStoreId($id);
	}
	
	protected function getListQuery()
	{
		// Create a new query object.
		$db = $this->getDbo();
		$query = $db->getQuery(true);

		// Select the required fields from the table.
		$query->select("*");
		$query->from('#__nivoslider_sliders AS a');
		
		// Filter by published state
		$published = $this->getState('filter.published');
		if (is_numeric($published)) {
			$query->where('a.published = ' . (int) $published);
		}
		else if ($published === '') {
			$query->where('(a.published = 0 OR a.published = 1)');
		}
		
		// Add the list ordering clause.
		$orderCol	= $this->state->get('list.ordering');
		$orderDirn	= $this->state->get('list.direction');
		
		if ($orderCol == 'a.ordering' || $orderCol == 'category_title') {
			$orderCol = 'category_title '.$orderDirn.', a.ordering';
		}
                  $orderCol = trim($orderCol);
                $order = $orderCol;
		
		if(!empty($orderDirn))	
			$order .= " ".$orderDirn;
		
		if(!empty($orderCol)) 
			$query->order($order);
//		$query->order($db->getEscaped($orderCol.' '.$orderDirn));
		
		return $query;
	}
	
}
