Thanks for your previous reply; however, I've tried your suggestion to add a 'artificial' field like this to the form_fields method:
$fields['cat1_shot_delete'] = array('type' => 'checkbox', 'label' => 'Delete image 1 ');
but the on_after_sa…
Actually, I know how to use the hook. But what I need is a form element e.g. a check box (labelled "delete file") for the user to interact on, so that when the user want to remove the file, she can check the box to signify the system to remove the f…
My situation is that
1. I have successfully uploaded a file, e.g. a pdf file, via the file input field (an optional field) generated by the Fuel CMS, together with other text contents fields
2. somehow after, I want to take away the file but want …