Added new random string static and twig function

system/src/Grav/Common/TwigExtension.php

@@ -68,7 +68,8 @@ class TwigExtension extends \Twig_Extension
             new \Twig_SimpleFunction('url', [$this, 'urlFunc']),
             new \Twig_SimpleFunction('dump', [$this, 'dump'], ['needs_context' => true, 'needs_environment' => true]),
             new \Twig_SimpleFunction('debug', [$this, 'dump'], ['needs_context' => true, 'needs_environment' => true]),
-            new \Twig_SimpleFunction('gist', [$this, 'gistFunc'])
+            new \Twig_SimpleFunction('gist', [$this, 'gistFunc']),
+            new \Twig_simpleFunction('random_string', [$this, 'randomStringFunc']),
         ];
     }
 
@@ -433,4 +434,16 @@ class TwigExtension extends \Twig_Extension
     {
         return '<script src="https://gist.github.com/'.$id.'.js"></script>';
     }
+
+    /**
+     * Generate a random string
+     *
+     * @param int $count
+     *
+     * @return string
+     */
+    public function randomStringFunc($count = 5)
+    {
+        return Utils::generateRandomString($count);
+    }
 }

system/src/Grav/Common/Utils.php

@@ -219,4 +219,16 @@ abstract class Utils
         }
         return $truncate;
     }
+
+    /**
+     * Generate a random string of a given length
+     *
+     * @param int $length
+     *
+     * @return string
+     */
+    public static function generateRandomString($length = 5)
+    {
+        return substr(str_shuffle("0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ"), 0, $length);
+    }
 }