--- a/sat_templates/templates/bulma/input/field.html	Sat Aug 01 17:01:31 2020 +0200
+++ b/sat_templates/templates/bulma/input/field.html	Sat Aug 01 17:01:31 2020 +0200
@@ -114,6 +114,6 @@
     @param id(none, str): id of the element
     #}
     <div class="control {{class}}">
-      <button {{ 'id="{id}"'.format(id=id)|safe if id }} class="button is-primary form_submit {{kwargs.pop('class', '')}}" type="submit">{{text}}</button>
+        <button{{ {'id': id}|xmlattr }} class="button is-primary form_submit {{kwargs.pop('class', '')}}" type="submit">{{text}}</button>
     </div>
 {% endmacro %}