<?php
$translate = $this->plugin('translate');
// Prepare the resource class query.
$ids = isset($query['resource_class_id']) ? $query['resource_class_id'] : [];
if (!is_array($ids)) {
    $ids = [$ids];
}
$ids = array_filter($ids);
if (!$ids) {
    $ids = [null];
}
?>
<div id="resource-class" class="field removable multi-value" role="group">
    <fieldset class="fieldset">
        <legend id="by-resource-class-label"><?php echo $translate('Search by class'); ?></legend>
        <div class="help-text"><?php echo $translate('Searches for items that are any of these classes.'); ?></div>
    <div class="inputs">
        <?php foreach ($ids as $id): ?>
        <div class="value">
            <?php echo $this->resourceClassSelect([
                'name' => 'resource_class_id[]',
                'attributes' => [
                    'value' => $id,
                    'aria-labelledby' =>  'by-resource-class-label'
                ],
            ]); ?>
            <button type="button" class="o-icon-delete remove-value button" aria-label="<?php echo $translate('Remove value'); ?>" title="<?php echo $translate('Remove value'); ?>"></button>
        </div>
        <?php endforeach; ?>
    </div>
    <a href="#" class="add-value button"><?php echo $translate('Add new class'); ?></a>
    </fieldset>
</div>
