Fixed fixture caching with prefixed or suffixed tables.

Signed-off-by: Joshua Peek <josh@joshpeek.com>

activerecord/lib/active_record/fixtures.rb

@@ -469,8 +469,8 @@ class Fixtures < (RUBY_VERSION < '1.9' ? YAML::Omap : Hash)
     fixtures.size > 1 ? fixtures : fixtures.first
   end
 
-  def self.cache_fixtures(connection, fixtures)
-    cache_for_connection(connection).update(fixtures.index_by { |f| f.table_name })
+  def self.cache_fixtures(connection, fixtures_map)
+    cache_for_connection(connection).update(fixtures_map)
   end
 
   def self.instantiate_fixtures(object, table_name, fixtures, load_instances = true)
@@ -526,7 +526,7 @@ class Fixtures < (RUBY_VERSION < '1.9' ? YAML::Omap : Hash)
             end
           end
 
-          cache_fixtures(connection, fixtures)
+          cache_fixtures(connection, fixtures_map)
         end
       end
     end

activerecord/test/cases/fixtures_test.rb

@@ -96,6 +96,10 @@ class FixturesTest < ActiveRecord::TestCase
 
       second_row = ActiveRecord::Base.connection.select_one("SELECT * FROM prefix_topics_suffix WHERE author_name = 'Mary'")
       assert_nil(second_row["author_email_address"])
+
+      # This checks for a caching problem which causes a bug in the fixtures 
+      # class-level configuration helper.
+      assert_not_nil topics, "Fixture data inserted, but fixture objects not returned from create"
     ensure
       # Restore prefix/suffix to its previous values
       ActiveRecord::Base.table_name_prefix = old_prefix