I’m working on plugin that optionally manipulates uploaded content (images). I managed to add some additional fields on “Insert media” popup under “Drop files anywhere to upload” text, but I need to send those parameters with file content to async-upload.php
when uploading.
Pre WP v3.3, I’ve been using this to achive desired results:
jQuery('input:text[name="custom_text"]').keyup(function() {
wpUploaderInit.multipart_params.custom_text = jQuery(this).val();
});