X-Git-Url: https://git.openstreetmap.org./rails.git/blobdiff_plain/daa2496024cf0bdc65e58eb6e2802784f411f68b..6cc4f4506b9a6612f57dd33d79e933d181a02713:/app/models/user_role.rb

diff --git a/app/models/user_role.rb b/app/models/user_role.rb
index efa540fec..6bc7435ae 100644
--- a/app/models/user_role.rb
+++ b/app/models/user_role.rb
@@ -1,8 +1,7 @@
 class UserRole < ActiveRecord::Base
-
-  ALL_ROLES = ['administrator', 'moderator']
-
-  validates_inclusion_of :role, :in => ALL_ROLES
   belongs_to :user
 
+  ALL_ROLES = %w(administrator moderator).freeze
+
+  validates :role, :inclusion => ALL_ROLES, :uniqueness => { :scope => :user_id }
 end