X-Git-Url: http://aleph1.co.uk/gitweb/?a=blobdiff_plain;f=web%2Fcore%2Fmodules%2Ffile%2Fsrc%2FElement%2FManagedFile.php;h=95798c6734de0c3f48efe759d61cc382392a3212;hb=5b8bb166bfa98770daef9de5c127fc2e6ef02340;hp=6f01ee552e979a3539b8e64acb8045c1d4ed5972;hpb=680c79a86e3ed402f263faeac92e89fb6d9edcc0;p=yaffs-website

diff --git a/web/core/modules/file/src/Element/ManagedFile.php b/web/core/modules/file/src/Element/ManagedFile.php
index 6f01ee552..95798c673 100644
--- a/web/core/modules/file/src/Element/ManagedFile.php
+++ b/web/core/modules/file/src/Element/ManagedFile.php
@@ -299,6 +299,10 @@ class ManagedFile extends FormElement {
 
       // Add the upload progress callback.
       $element['upload_button']['#ajax']['progress']['url'] = Url::fromRoute('file.ajax_progress', ['key' => $upload_progress_key]);
+
+      // Set a custom submit event so we can modify the upload progress
+      // identifier element before the form gets submitted.
+      $element['upload_button']['#ajax']['event'] = 'fileUpload';
     }
 
     // The file upload field itself.