[FIX] The validation now checks for empty vanity mappings.

Author: Nathan Glasl

README.md

@@ -1,6 +1,6 @@
 # [misdirection](https://packagist.org/packages/nglasl/silverstripe-misdirection)
 
-_The current release is **3.1.0**_
+_The current release is **3.1.1**_
 
 > This module allows both simple and regular expression link redirections based on customisable mappings, either hooking into a page not found or replacing the default automated URL handling.
 

src/extensions/SiteTreeMisdirectionExtension.php

@@ -55,6 +55,9 @@ public function validate(ValidationResult $result) {
 		// Retrieve the vanity mapping URL, where this is only possible using the POST variable.
 
 		$vanityURL = (!Controller::has_curr() || is_null($controller = Controller::curr()) || is_null($URL = $controller->getRequest()->postVar('VanityURL'))) ? $this->owner->VanityMapping()->MappedLink : $URL;
+		if(!$vanityURL) {
+			return $result;
+		}
 
 		// Determine whether another vanity mapping already exists.