Actualización

main/inc/lib/formvalidator/Rule/CompareDateTimeText.php

@@ -0,0 +1,31 @@
+<?php
+/* For licensing terms, see /license.txt */
+
+/**
+ * QuickForm rule to compare 2 dates.
+ */
+class HTML_QuickForm_Rule_CompareDateTimeText extends HTML_QuickForm_Rule_Compare
+{
+    /**
+     * Validate 2 dates.
+     *
+     * @param string $operator The operator to use (default '==')
+     *
+     * @return bool True if the 2 given dates match the operator
+     */
+    public function validate($values, $operator = null)
+    {
+        $datetime1 = api_strtotime($values[0]);
+        $datetime2 = api_strtotime($values[1]);
+
+        if (strpos($operator, 'allow_empty') !== false) {
+            $operator = str_replace('allow_empty', '', $operator);
+            if (!$datetime2 || empty($datetime2)) {
+                return true;
+            }
+        }
+        $result = parent::validate([$datetime1, $datetime2], $operator);
+
+        return $result;
+    }
+}