X-Git-Url: https://git.openstreetmap.org/rails.git/blobdiff_plain/daa2496024cf0bdc65e58eb6e2802784f411f68b..862f46cd500ec211a6154095f7acb3b25abd8d95:/app/models/user_role.rb

diff --git a/app/models/user_role.rb b/app/models/user_role.rb
index efa540fec..4f80f1952 100644
--- a/app/models/user_role.rb
+++ b/app/models/user_role.rb
@@ -1,8 +1,8 @@
 class UserRole < ActiveRecord::Base
-
-  ALL_ROLES = ['administrator', 'moderator']
-
-  validates_inclusion_of :role, :in => ALL_ROLES
   belongs_to :user
+  belongs_to :granter, :class_name => "User"
+
+  ALL_ROLES = %w(administrator moderator).freeze
 
+  validates :role, :inclusion => ALL_ROLES, :uniqueness => { :scope => :user_id }
 end