Fixtures: correctly delete and insert fixtures in a single transaction. Closes #8553.

git-svn-id: http://svn-commit.rubyonrails.org/rails/trunk@6944 5ecf4fe2-1ee6-0310-87b1-e25e094e27de

activerecord/CHANGELOG

 *SVN*
 
+* Fixtures: correctly delete and insert fixtures in a single transaction.  #8553 [Michael Schuerig]
+
 * Fixtures: people(:technomancy, :josh) returns both fixtures.  #7880 [technomancy, Josh Peek]
 
 * Calculations support non-numeric foreign keys.  #8154 [kamal]

activerecord/lib/active_record/fixtures.rb

@@ -255,7 +255,7 @@ def self.create_fixtures(fixtures_directory, table_names, class_names = {})
 
       all_loaded_fixtures.merge! fixtures_map  
 
-      connection.transaction(Thread.current['open_transactions'] == 0) do
+      connection.transaction(Thread.current['open_transactions'].to_i == 0) do
         fixtures.reverse.each { |fixture| fixture.delete_existing_fixtures }
         fixtures.each { |fixture| fixture.insert_fixtures }