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Filename : banners.php
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<?php
/**
 * @package     Joomla.Administrator
 * @subpackage  com_banners
 *
 * @copyright   Copyright (C) 2005 - 2016 Open Source Matters, Inc. All rights reserved.
 * @license     GNU General Public License version 2 or later; see LICENSE.txt
 */

defined('_JEXEC') or die;

/**
 * Methods supporting a list of banner records.
 *
 * @since  1.6
 */
class BannersModelBanners extends JModelList
{
	/**
	 * Constructor.
	 *
	 * @param   array  $config  An optional associative array of configuration settings.
	 *
	 * @see     JControllerLegacy
	 * @since   1.6
	 */
	public function __construct($config = array())
	{
		if (empty($config['filter_fields']))
		{
			$config['filter_fields'] = array(
				'id', 'a.id',
				'cid', 'a.cid', 'client_name',
				'name', 'a.name',
				'alias', 'a.alias',
				'state', 'a.state',
				'ordering', 'a.ordering',
				'language', 'a.language',
				'catid', 'a.catid', 'category_title',
				'checked_out', 'a.checked_out',
				'checked_out_time', 'a.checked_out_time',
				'created', 'a.created',
				'impmade', 'a.impmade',
				'imptotal', 'a.imptotal',
				'clicks', 'a.clicks',
				'publish_up', 'a.publish_up',
				'publish_down', 'a.publish_down',
				'state', 'sticky', 'a.sticky',
				'client_id',
				'category_id',
				'published'
			);
		}

		parent::__construct($config);
	}

	/**
	 * Method to get the maximum ordering value for each category.
	 *
	 * @return  array
	 *
	 * @since   1.6
	 */
	public function &getCategoryOrders()
	{
		if (!isset($this->cache['categoryorders']))
		{
			$db = $this->getDbo();
			$query = $db->getQuery(true)
				->select('MAX(ordering) as ' . $db->quoteName('max') . ', catid')
				->select('catid')
				->from('#__banners')
				->group('catid');
			$db->setQuery($query);
			$this->cache['categoryorders'] = $db->loadAssocList('catid', 0);
		}

		return $this->cache['categoryorders'];
	}

	/**
	 * Build an SQL query to load the list data.
	 *
	 * @return  JDatabaseQuery
	 *
	 * @since   1.6
	 */
	protected function getListQuery()
	{
		$db = $this->getDbo();
		$query = $db->getQuery(true);

		// Select the required fields from the table.
		$query->select(
			$this->getState(
				'list.select',
				'a.id AS id,' .
				'a.name AS name,' .
				'a.alias AS alias,' .
				'a.checked_out AS checked_out,' .
				'a.checked_out_time AS checked_out_time,' .
				'a.catid AS catid,' .
				'a.clicks AS clicks,' .
				'a.metakey AS metakey,' .
				'a.sticky AS sticky,' .
				'a.impmade AS impmade,' .
				'a.imptotal AS imptotal,' .
				'a.state AS state,' .
				'a.ordering AS ordering,' .
				'a.purchase_type AS purchase_type,' .
				'a.language,' .
				'a.publish_up,' .
				'a.publish_down'
			)
		);
		$query->from($db->quoteName('#__banners') . ' AS a');

		// Join over the language
		$query->select('l.title AS language_title, l.image AS language_image')
			->join('LEFT', $db->quoteName('#__languages') . ' AS l ON l.lang_code = a.language');

		// Join over the users for the checked out user.
		$query->select('uc.name AS editor')
			->join('LEFT', '#__users AS uc ON uc.id=a.checked_out');

		// Join over the categories.
		$query->select('c.title AS category_title')
			->join('LEFT', '#__categories AS c ON c.id = a.catid');

		// Join over the clients.
		$query->select('cl.name AS client_name,cl.purchase_type as client_purchase_type')
			->join('LEFT', '#__banner_clients AS cl ON cl.id = a.cid');

		// Filter by published state
		$published = $this->getState('filter.published');

		if (is_numeric($published))
		{
			$query->where('a.state = ' . (int) $published);
		}
		elseif ($published === '')
		{
			$query->where('(a.state IN (0, 1))');
		}

		// Filter by category.
		$categoryId = $this->getState('filter.category_id');

		if (is_numeric($categoryId))
		{
			$query->where('a.catid = ' . (int) $categoryId);
		}

		// Filter by client.
		$clientId = $this->getState('filter.client_id');

		if (is_numeric($clientId))
		{
			$query->where('a.cid = ' . (int) $clientId);
		}

		// Filter by search in title
		$search = $this->getState('filter.search');

		if (!empty($search))
		{
			if (stripos($search, 'id:') === 0)
			{
				$query->where('a.id = ' . (int) substr($search, 3));
			}
			else
			{
				$search = $db->quote('%' . str_replace(' ', '%', $db->escape(trim($search), true) . '%'));
				$query->where('(a.name LIKE ' . $search . ' OR a.alias LIKE ' . $search . ')');
			}
		}

		// Filter on the language.
		if ($language = $this->getState('filter.language'))
		{
			$query->where('a.language = ' . $db->quote($language));
		}

		// Add the list ordering clause.
		$orderCol  = $this->state->get('list.ordering', 'ordering');
		$orderDirn = $this->state->get('list.direction', 'ASC');

		if ($orderCol == 'ordering' || $orderCol == 'category_title')
		{
			$orderCol = 'c.title ' . $orderDirn . ', a.ordering';
		}

		if ($orderCol == 'client_name')
		{
			$orderCol = 'cl.name';
		}

		$query->order($db->escape($orderCol . ' ' . $orderDirn));

		return $query;
	}

	/**
	 * Method to get a store id based on model configuration state.
	 *
	 * This is necessary because the model is used by the component and
	 * different modules that might need different sets of data or different
	 * ordering requirements.
	 *
	 * @param   string  $id  A prefix for the store id.
	 *
	 * @return  string  A store id.
	 *
	 * @since   1.6
	 */
	protected function getStoreId($id = '')
	{
		// Compile the store id.
		$id .= ':' . $this->getState('filter.search');
		$id .= ':' . $this->getState('filter.access');
		$id .= ':' . $this->getState('filter.published');
		$id .= ':' . $this->getState('filter.category_id');
		$id .= ':' . $this->getState('filter.language');

		return parent::getStoreId($id);
	}

	/**
	 * Returns a reference to the a Table object, always creating it.
	 *
	 * @param   string  $type    The table type to instantiate
	 * @param   string  $prefix  A prefix for the table class name. Optional.
	 * @param   array   $config  Configuration array for model. Optional.
	 *
	 * @return  JTable  A JTable object
	 *
	 * @since   1.6
	 */
	public function getTable($type = 'Banner', $prefix = 'BannersTable', $config = array())
	{
		return JTable::getInstance($type, $prefix, $config);
	}

	/**
	 * Method to auto-populate the model state.
	 *
	 * Note. Calling getState in this method will result in recursion.
	 *
	 * @param   string  $ordering   An optional ordering field.
	 * @param   string  $direction  An optional direction (asc|desc).
	 *
	 * @return  void
	 *
	 * @since   1.6
	 */
	protected function populateState($ordering = 'a.name', $direction = 'asc')
	{
		// Load the filter state.
		$this->setState('filter.search', $this->getUserStateFromRequest($this->context . '.filter.search', 'filter_search'));
		$this->setState('filter.state', $this->getUserStateFromRequest($this->context . '.filter.state', 'filter_state', '', 'string'));
		$this->setState('filter.category_id', $this->getUserStateFromRequest($this->context . '.filter.category_id', 'filter_category_id', ''));
		$this->setState('filter.client_id', $this->getUserStateFromRequest($this->context . '.filter.client_id', 'filter_client_id', ''));
		$this->setState('filter.language', $this->getUserStateFromRequest($this->context . '.filter.language', 'filter_language', ''));

		// Load the parameters.
		$this->setState('params', JComponentHelper::getParams('com_banners'));

		// List state information.
		parent::populateState($ordering, $direction);
	}
}