Ordering multi word tags by second value

Kirby 2 Solved ✅
#1

Hello!

Is it possible to order a collection of multi-word tags, say in alphabetical order from A to Z, using the second value as key?

In my case it would be a tag composed by firstname lastname, that I’d like to print in the order firstname lastname, but ordering by lastname.

Thanks,
André

#2

You didn’t share the data you have so I’m assuming tag is a simple text field. You may need to adjust it to match your data…

$pages = $pages->map(function($page) {
  // convert tag name to array
  $tag = explode(' ', $page->tag()->value());

  // take last item of the array
  $page->lastname = array_pop($tag);

  return $page;
})->sortBy('lastname');

dump($pages);

So this is basically adding a new field to each item in the collection so that you can sort it by the new field.

#3

If it’s just an array of plucked values, you can use array_map():

    <?php
    $tags = page('projects')->children()->pluck('tags', ',', true);

    $callback = function($item) {
      $tag = explode(' ', $item);
      return array_reverse($tag);
    };

    $map = array_map($callback, $tags);

    array_multisort($map, SORT_ASC);

    foreach($map as $key => $name) {
      echo $name[1] . ' ' . $name[0];
    }
?>
1 Like
Fill page title by combining two other page fields
#4

Thanks, works like a charm.