From: "Eduardo Yáñez Parareda" Date: 2006-07-19T19:05:08+09:00 Subject: Re: Rails: Saving an object into DB > > try @player.save I've changed the code to: def Player.create_player(team_id) @player = Player.new @player.relate_to_team(team_id) @player.save return @player end but get the same error.