Unhandled Error!

Trying to get property of non-object

Document	shop:category
Document type	CMS partial
Line	12
Exception class	Cms_ExecutionException

Code Highlight

                if (post('sorting'))
                  Cms_VisitorPreferences::set('cat_sorting_'.$category->id, post('sorting'));
 
                /*
                 * Load the product sorting mode. The default mode is 'name'.
                 */
                $sorting_preferences = Cms_VisitorPreferences::get('cat_sorting_'.$category->id, array('short_description'));
 
                $selected_option = $sorting_preferences[0];
              ?>      
 
<?

#	Document	Type
2	shop:category	CMS partial
1	Sale	CMS page