warehouse layers [switchable]

app/assets/js/custom.js

@@ -698,6 +698,21 @@ function format_date(iso_string) {
   return (datePart) ? `${datePart[2]}/${datePart[1]}/${datePart[0]} ${split[1]}` : iso_string;
 }
 
+
+function to_iso_date(dateStr) {
+  if (!dateStr) return null;
+
+  const parts = dateStr.split('/');
+  if (parts.length !== 3) return null;
+
+  let [day, month, year] = parts;
+  day = day.padStart(2, '0');
+  month = month.padStart(2, '0');
+
+  return `${year}-${month}-${day}`;
+}
+
+
 function format_number(value, decimal) {
   var n = Number(value);
   if (isNaN(n)) return '--';