Gazelle/sections/collages/manage_artists.php

<?php
declare(strict_types = 1);

$CollageID = $_GET['collageid'];
if (!is_number($CollageID)) {
    error(0);
}

$DB->query("
  SELECT Name, UserID, CategoryID
  FROM collages
  WHERE ID = '$CollageID'");
list($Name, $UserID, $CategoryID) = $DB->next_record();
if ($CategoryID === '0' && $UserID != $LoggedUser['ID'] && !check_perms('site_collages_delete')) {
    error(403);
}
if ($CategoryID != array_search(ARTIST_COLLAGE, $CollageCats)) {
    error(404);
}

$DB->query("
  SELECT
    ca.ArtistID,
    ag.Name,
    um.ID AS UserID,
    um.Username,
    ca.Sort
  FROM collages_artists AS ca
    JOIN artists_group AS ag ON ag.ArtistID = ca.ArtistID
    LEFT JOIN users_main AS um ON um.ID = ca.UserID
  WHERE ca.CollageID = '$CollageID'
  ORDER BY ca.Sort");

$Artists = $DB->to_array('ArtistID', MYSQLI_ASSOC);


View::show_header(
    "Manage collage $Name",
    'vendor/jquery.tablesorter.min,sort'
); ?>

<div>
  <h2 class="header">
    Manage collage
    <a href="collages.php?id=<?=$CollageID?>"><?=$Name?></a>
  </h2>

  <!-- Instructions -->
  <table width="100%" class="layout">
    <tr class="colhead">
      <td id="sorting_head">Sorting</td>
    </tr>

    <tr>
      <td id="drag_drop_textnote">
        <ul>
          <li>Click on the headings to organize columns automatically.</li>
          <li>Sort multiple columns simultaneously by holding down the shift key and clicking other column headers.</li>
          <li>Click and drag any row to change its order.</li>
          <li>Press "Save All Changes" when you are finished sorting.</li>
          <li>Press "Edit" or "Remove" to simply modify one entry.</li>
        </ul>
      </td>
    </tr>
  </table>

  <!-- Save All Changes -->
  <div class="drag_drop_save hidden">
    <input type="button" name="submit" value="Save All Changes" class="save_sortable_collage" />
  </div>

  <!-- Collage table headings -->
  <table id="manage_collage_table">
    <thead>
      <tr class="colhead">
        <th style="width: 7%;" data-sorter="false">
          Order
        </th>

        <th style="width: 1%;">
          <span><abbr class="tooltip" title="Current rank">#</abbr></span>
        </th>

        <th style="width: 1%;">
          <span><abbr class="tooltip" title="Accession number">#</abbr></span>
        </th>

        <th style="text-align: left;" data-sorter="ignoreArticles">
          <span>Creator</span>
        </th>

        <th style="width: 7%;" data-sorter="ignoreArticles">
          <span>User</span>
        </th>

        <th style="width: 7%; text-align: right;" class="nobr" data-sorter="false">
          <span><abbr class="tooltip" title="Modify an individual row.">Tweak</abbr></span>
        </th>
      </tr>
    </thead>

<!-- Sortable collage table -->
    <tbody>
      <?php
  $Number = 0;
  foreach ($Artists as $Artist) {
      $Number++; ?>
      <tr class="drag row"
        id="li_<?=$Artist['ArtistID']?>">
        <form class="manage_form" name="collage" action="collages.php" method="post">
          <td>
            <input class="sort_numbers" type="text" name="sort"
              value="<?=$Artist['Sort']?>"
              id="sort_<?=$Artist['ArtistID']?>"
              size="4" />
          </td>
          <td><?=$Number?>
          </td>
          <td><?=(trim($Artist['Name']) ?: '&nbsp;')?>
          </td>
          <td class="nobr"><?=Users::format_username($Artist['UserID'], $$Artist['Username'], false, false, false)?>
          </td>
          <td class="nobr">
            <input type="hidden" name="action" value="manage_artists_handle" />
            <input type="hidden" name="auth"
              value="<?=$LoggedUser['AuthKey']?>" />
            <input type="hidden" name="collageid"
              value="<?=$CollageID?>" />
            <input type="hidden" name="artistid"
              value="<?=$Artist['ArtistID']?>" />
            <input type="submit" name="submit" value="Edit" />
            <input type="submit" name="submit" value="Remove" />
          </td>
        </form>
      </tr>
      <?php
  } ?>
    </tbody>
  </table>
  <div class="drag_drop_save hidden">
    <input type="button" name="submit" value="Save All Changes" class="save_sortable_collage" />
  </div>
  <form class="dragdrop_form hidden" name="collage" action="collages.php" method="post" id="drag_drop_collage_form">
    <div>
      <input type="hidden" name="action" value="manage_artists_handle" />
      <input type="hidden" name="auth"
        value="<?=$LoggedUser['AuthKey']?>" />
      <input type="hidden" name="collageid"
        value="<?=$CollageID?>" />
      <input type="hidden" name="artistid" value="1" />
      <input type="hidden" name="drag_drop_collage_sort_order" id="drag_drop_collage_sort_order" readonly="readonly"
        value="" />
    </div>
  </form>
</div>
<?php View::show_footer();