Made uuid generator optional (suggest via composer)

Author: terox

composer.json

@@ -17,8 +17,10 @@
         "symfony/polyfill-php70": "^1.3",
         "symfony/security": "^2.8|^3.0",
         "symfony/options-resolver": "^2.8|^3.0",
-        "ircmaxell/random-lib": "~1.0",
-        "ramsey/uuid": "^3.6"
+        "ircmaxell/random-lib": "~1.0"
+    },
+    "suggest": {
+        "ramsey/uuid": "To use the UUID generator you should require this package"
     },
     "require-dev": {
         "phpspec/phpspec": "~2.0"

src/Vivait/StringGeneratorBundle/Generator/UuidGenerator.php

@@ -38,6 +38,10 @@ public function __construct()
      */
     public function generate()
     {
+        if(!class_exists('Ramsey\Uuid\Uuid')) {
+            throw new \RuntimeException('For use the UUID generator you should setup the ramsey/uuid package');
+        }
+
         switch($this->version) {
             case 1:
                 return Uuid::uuid1()->toString();