Ключевые слова: 3rd Edition [2] sparklines [1] active_record [1] rel [1] cloaking [1] sass [1] numbers from string [1] human_attribute_name [1] rails development environment [1] ruby code optimization [1] application deploy [1] numbers [1] ActionController::RoutingError [1] книга [2] File.exists? [1] FileUtils.mv [1] rails тенденции [1] столбец [1] Time.local [2] yield [1]