BUGFIX Disable javascript date validation via DateField->jsValidation…

…() if locale is not 'en_NZ" (which is the only format it validates for). (from r100986)

git-svn-id: svn://svn.silverstripe.com/silverstripe/open/modules/sapphire/trunk@111558 467b73ca-7a2a-4603-9d3b-597d59a354a9

forms/DateField.php

@@ -37,6 +37,11 @@
  * 	$f->setLocale('de_DE');
  * 	$f->setConfig('dmyfields');
  * 
+ * # Validation
+ * 
+ * Caution: JavaScript validation is only supported for the 'en_NZ' locale at the moment,
+ * it will be disabled automatically for all other locales.
+ * 
  * @package forms
  * @subpackage fields-datetime
  */
@@ -221,6 +226,9 @@ function performReadonlyTransformation() {
 	}
 
 	function jsValidation() {
+		// JavaScript validation of locales other than en_NZ are not supported at the moment...
+		if($this->getLocale() != 'en_NZ') return;
+
 		$formID = $this->form->FormName();
 
 		if(Validator::get_javascript_validator_handler() == 'none') return true;