What are the parameters that you get from the submission? Is it just the file?
Usually, the file uploads are submitted as soon as they are uploaded into the browser to avoid uploading all of them at once on form submission which can be perceived as a lag by the end user.
In this case I want the submission of files to be tied to use clicking Submit. What happens now is as soon as files ar dragged the form submission occurs.
When instantiating your dropzone instance you can pass callback definitions along with the options, one of those is the accept callback in which you can have logic (for instance retrieve a S3 signature key from your back-end) and prevent the upload from starting by simply returning without calling done() (if I’m not mistaken, check their docs)
Had you any issues with browser compatibility? If you could write a quick guide on how to achieve a basic setup with arc, ex_aws and dropzone that would be great for the community.