Provide access to the underlying database connection with...

Provide access to the underlying database connection with Adapter#raw_connection, allows the use of db-specific methods such as postgresql's lo_* . Closes #2090


git-svn-id: http://svn-commit.rubyonrails.org/rails/trunk@3914 5ecf4fe2-1ee6-0310-87b1-e25e094e27de

activerecord/CHANGELOG

 *SVN*
 
-* Remove broken attempts at handling columns with a a default of 'now()' in the postgresql adapter. #2257 [Koz]
+* Provide access to the underlying database connection through Adapter#raw_connection. Enables the use of db-specific methods without complicating the adapters. #2090 [Koz]
+
+* Remove broken attempts at handling columns with a default of 'now()' in the postgresql adapter. #2257 [Koz]
 
 * Added connection#current_database that'll return of the current database (only works in MySQL, SQL Server, and Oracle so far -- please help implement for the rest of the adapters) #3663 [Tom ward]
 

activerecord/lib/active_record/connection_adapters/abstract_adapter.rb

@@ -87,6 +87,13 @@ def verify!(timeout)
         end
       end
       
+      # Provides access to the underlying database connection. Useful for
+      # when you need to call a proprietary method such as postgresql's lo_*
+      # methods
+      def raw_connection
+        @connection
+      end
+
       protected
         def log(sql, name)
           if block_given?