- def build_preview_url(sig_base64, url_base64, filename \\ nil) do
- proxy_url("proxy/preview", sig_base64, url_base64, filename)
+ def build_preview_url(sig_base64, url_base64, filename \\ nil, preview_params \\ []) do
+ uri = proxy_url("proxy/preview", sig_base64, url_base64, filename)
+
+ UriHelper.modify_uri_params(uri, preview_params)