Make the search widget better.

[JonezJeA]

If a user knows the stuff he is looking for is in a post why does the search bar needs to look for pages or plug ins also? It is a waste of time!
At many sites you can choose to search in the posts or in the pages only and I think it would be a handy feature in WordPress too!

[nacin]

This can be done in a plugin. Our current widget is as simple as possible and there's no need to add existing UI elements.

You can pass a post_type field via your own search widget and WP_Query will handle that.

[ocean90]

Example code:

function my_exclude_pages_from_search( $query ) {
	if ( $query->is_search )
		$query->set(  'post_type', 'post' );

	return $query;
}

add_filter( 'pre_get_posts', 'my_exclude_pages_from_search' );