Making sure the Role slug is unique

Modules/User/Http/Requests/RolesRequest.php

@@ -10,6 +10,7 @@ class RolesRequest extends FormRequest
     {
         return [
             'name' => 'required',
+            'slug' => 'required|unique:roles,slug',
         ];
     }
 

Modules/User/changelog.yml

@@ -3,6 +3,8 @@ versions:
     "3.1.0@unreleased":
         added:
             - Seeding new media.folders permissions on install
+        changed:
+            - Making sure the role slug is unique
     "3.0.0":
         added:
             - <code>logUserIn</code> on the <code>Authentication</code> interface to log a user object in