Ensure uniqueness validation is scoped by deleted_at

Fixes #114
rubysherpas · Mar 16, 2014 · 9999e45 · 9999e45
1 parent 54fa370
commit 9999e45
Showing 1 changed file with 13 additions and 0 deletions.
diff --git a/lib/paranoia.rb b/lib/paranoia.rb
@@ -148,3 +148,16 @@ def paranoia_column
  self.class.paranoia_column
  end
 end
+
+module ActiveRecord
+ module Validations
+ class UniquenessValidator < ActiveModel::EachValidator
+ protected
+ def build_relation_with_paranoia(klass, table, attribute, value)
+ relation = build_relation_without_paranoia(klass, table, attribute, value)
+ relation.and(klass.quoted_table_name + ".#{klass.paranoia_column} IS NULL")
+ end
+ alias_method_chain :build_relation, :paranoia
+ end
+ end
+end