[Request] Custom callback for getSignedURL

[darylteo]

To facilitate a drop-in replacement for our existing code without changing our server side code, we'd like to have a way to customise the getSignedURL functionality so that we have the opportunity to take our existing response schema and map it to the signature response data the plugin requires to send the file to S3.

This could be coded in a similar way to the signingURL property.

  getSignedURL: (signUrl) => $.post('signUrl').then((response) => ({
    signature: response.someotherthing, // as a simple example
  });

Required for non-cookie based authentication workflows.

[vrajroham]

@darylteo This makes sense to me. I'll check if I can modify or introduce something which will satisfy this request.

[adnanmuttaleb]

Anything new for this?