Handle data-attributes

[LeJxrxm]

I can't manage to find this on the web so I guess this might be a feature implementation:

I have a form which has items like so

<?php // Inside a repeater item // ?>
<img id="form-repeater-<?= $i ?>-1-preview" src="<?= $bloc->image ?? '#' ?>" alt="" class="d-block mx-auto img-fluid w-75" style="max-height: 340px; object-fit: contain">
<?= $this->Form->control('uploaded_file', ['class' => 'd-none preview', 'data-target' => '#form-repeater-' . $i . '-1-preview', 'type' => 'file', 'id' => 'form-repeater-' . $i . '-3-input', 'label' => false,]) ?>
<label for="form-repeater-<?= $i ?>-3-input" class="btn btn-outline-primary mt-1 w-100">
    <i class="ti ti-upload"></i>&nbsp;Choisir l'image du header
</label>

What the code is supposed to do is show the user's file when it's changed
The img tag will show the img, the php call will create the input, $i is part of the loop, the label is just a button that will toggle the file explorer.

Everything is working like a charm, but the properties like "form-repeater-<?= $i ?>-1-preview" won't be handled by the lib.

Could be a nice feature to implement.