At the code level there are multiple type of order types, meaning the results can be different depending on the algorithm is being applied. As default a text sorting (SORT_REGULAR flag) is being used.
Presuming we have the following title list:
- Title 1
- Title 21
- Title 22
- Title 3
When using a default sorting by Title, the objects are outputted in the above order, which is the default.
However sometime a natural sort is required to apply (SORT_NATURAL flag), so the output will be the following:
- Title 1
- Title 3
- Title 21
- Title 22
This can be achieved through Automatic Order along with a Custom Function callback. The following code can be used:
function custom_sort_function( $post_list, $sort_view_id, $orderBy, $query )
{
if ( count($post_list) < 1 )
return $post_list;
//retrieve the title of objects
$objects_map = array();
foreach($post_list as $post_id )
{
$post_data = get_post( $post_id );
$objects_map[$post_id] = $post_data->post_title;
}
//apply natural sorting
natsort( $objects_map );
$post_list = array_keys( $objects_map );
return $post_list;
}
Then the custom_sort_function can be used along the Custom Function entry field.
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