Is is possible in belongsToSortedMany set a new item position 1 and also reorder other item

[alexpisotsky]

Sdantard works module, all new items have order number last item + 1. Is it possible when a new item will be first (has position 1) and other items will be reordered automatically?

[boxfrommars]

You can do it by moving new item before the first item. Something like:

$post->tags()->save($newTag); // add new tag
$firstTag = $post->tags()->first(); // get first tag
$post->tags()->moveBefore($newTag, $firstTag); // move new tag before first tag