get_sidebar( ); is used to get the widget sidebar , but how do I request one element from it?
For instance, if I want to show the search or most read only? I know there is a way to specify the sidebar for page like
get_sidebar('404' ); for example
How do I do this? I've created the
404.php page. Do I have to register other sidebar or do I have to create "404_sidebar.php"?
So, how do I get the "search" element only when my website return error 404?