Hi there everyone im new to PHP and Joomla and I have developed a component in Joomla but my code is giving me errors. I have tried to solve the problem but I’am unable to solve it. So can anyone suggest me what is the problem with my code? Thanks in advance.

Here are my two files:

1st view.html.php

defined('_JEXEC') or die('=;)');

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

class namnamViewlistrestaurant extends JView
{
    function display($tpl = null)
    {
        $item = 'item';
        RestUser::RestrictDirectAccess();
        //-- Custom css
        JHTML::stylesheet( 'style.css', 'components/com_namnam/assets/css/' );

        $cuisine=Lookups::getLookup('cuisine');
        $lists['cuisine'] = JHTML::_('select.genericlist', $cuisine, 'idcuisine[]', 'class="inputbox" size="7"', 'value', 'text', $item->idcuisine);

        $category=Lookups::getLookup('restcategory');
        $lists['category'] = JHTML::_('select.genericlist', $category, 'idcategory[]', 'class="inputbox" multiple="multiple" size="7"', 'value', 'text', $item->idcategory);

        $items  = & $this->get('Data');
        $pagination =& $this->get('Pagination');

        $lists = & $this->get('List');

        $this->assignRef('items', $items);
        $this->assignRef('pagination', $pagination);
        $this->assignRef('lists', $lists);
        parent::display($tpl);

    }//function

}//class

And 2nd is listrestaurant.php

defined('_JEXEC') or die('=;)');

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

class namnamModellistrestaurant extends JModel
{
    var $_data;
    var $_total = null;
    var $_pagination = null;

    function __construct()
    {
        parent::__construct();
        global $mainframe, $option;

        $limit      = $mainframe->getUserStateFromRequest( 'global.list.limit', 'limit', $mainframe->getCfg('list_limit'), 'int' );
        $limitstart = $mainframe->getUserStateFromRequest( $option.'.limitstart', 'limitstart', 0, 'int' );
        $limitstart = ($limit != 0 ? (floor($limitstart / $limit) * $limit) : 0);
        $this->setState('limit', $limit);
        $this->setState('limitstart', $limitstart);
    }

    function _buildQuery()
    {
        $where = array();
        $where[]=" idowner=".RestUser::getUserID()." ";
        if ($this->search)
        {
            $where[] = 'LOWER(name) LIKE \''. $this->search. '\'';
        }

        $where =( count($where) ) ? ' WHERE ' . implode( ' AND ', $where ) : '';
        $orderby = '';

        #_ECR_MAT_FILTER_MODEL1_

        if (($this->filter_order) && ($this->filter_order_Dir))
        {
            $orderby    = ' ORDER BY '. $this->filter_order .' '. $this->filter_order_Dir;
        }

        $this->_query = ' SELECT *'
        . ' FROM #__namnam_restaurants '
        . $where
        . $orderby
        ;

        return $this->_query;
    }


    function getData()
    {
        if (empty($this->_data))
        {
            $query = $this->_buildQuery();
            $this->_data = $this->_getList($query, $this->getState('limitstart'), $this->getState('limit'));
        }
        return $this->_data;
    }

    function getList()
    {
        // table ordering
        $lists['order_Dir'] = $this->filter_order_Dir;
        $lists['order']     = $this->filter_order;

        // search filter
        $lists['search']= $this->search;

        return $lists;
    }

    function getTotal()
    {
        // Load the content if it doesn't already exist
        if (empty($this->_total))
        {
            $query = $this->_buildQuery();
            $this->_total = $this->_getListCount($query);
        }

        return $this->_total;
    }

    function getPagination()
    {
        // Load the content if it doesn't already exist
        if (empty($this->_pagination))
        {
            jimport('joomla.html.pagination');
            $this->_pagination = new JPagination($this->getTotal(), $this->getState('limitstart'), $this->getState('limit') );
        }

        return $this->_pagination;
    }




}//class

And the errors are:

Notice: Trying to get property of non-object in C:\wamp\www\namnam.com\components\com_namnam\views\listrestaurant\view.html.php on line 26

Notice: Trying to get property of non-object in C:\wamp\www\namnam.com\components\com_namnam\views\listrestaurant\view.html.php on line 29

Notice: Undefined property: namnamModellistrestaurant::$search in C:\wamp\www\namnam.com\components\com_namnam\models\listrestaurant.php on line 38

Notice: Undefined property: namnamModellistrestaurant::$filter_order in C:\wamp\www\namnam.com\components\com_namnam\models\listrestaurant.php on line 48

Notice: Undefined property: namnamModellistrestaurant::$search in C:\wamp\www\namnam.com\components\com_namnam\models\listrestaurant.php on line 38

Notice: Undefined property: namnamModellistrestaurant::$filter_order in C:\wamp\www\namnam.com\components\com_namnam\models\listrestaurant.php on line 48

Notice: Undefined property: namnamModellistrestaurant::$filter_order_Dir in C:\wamp\www\namnam.com\components\com_namnam\models\listrestaurant.php on line 76

Notice: Undefined property: namnamModellistrestaurant::$filter_order in C:\wamp\www\namnam.com\components\com_namnam\models\listrestaurant.php on line 77

Notice: Undefined property: namnamModellistrestaurant::$search in C:\wamp\www\namnam.com\components\com_namnam\models\listrestaurant.php on line 80