diff db/migrate/20130201184705_add_unique_index_on_tokens_value.rb @ 1464:261b3d9a4903 redmine-2.4

Update to Redmine 2.4 branch rev 12663

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/db/migrate/20130201184705_add_unique_index_on_tokens_value.rb	Tue Jan 14 14:37:42 2014 +0000
@@ -0,0 +1,15 @@
+class AddUniqueIndexOnTokensValue < ActiveRecord::Migration
+  def up
+    say_with_time "Adding unique index on tokens, this may take some time..." do
+      # Just in case
+      duplicates = Token.connection.select_values("SELECT value FROM #{Token.table_name} GROUP BY value HAVING COUNT(id) > 1")
+      Token.where(:value => duplicates).delete_all
+  
+      add_index :tokens, :value, :unique => true, :name => 'tokens_value'
+    end
+  end
+
+  def down
+    remove_index :tokens, :name => 'tokens_value'
+  end
+end