ActiveRecordでテーブルステータスを取得する

# HACK: クラスを再オープンしてクラスメソッドを定義する
class ActiveRecord::Base
  def self.table_status
    query = "SHOW TABLE STATUS LIKE '#{self.table_name}'"
    connection.select_one(query)
  end
end

irb(main):001:0> User.table_status
   (1.7ms)  SHOW TABLE STATUS LIKE 'users'
=> {"Name"=>"users",
 "Engine"=>"InnoDB",
 "Version"=>10,
 "Row_format"=>"Compact",
 "Rows"=>10,
 "Avg_row_length"=>1638,
 "Data_length"=>16384,
 "Max_data_length"=>0,
 "Index_length"=>180224,
 "Data_free"=>0,
 "Auto_increment"=>11,
 "Create_time"=>2015-02-28 07:48:06 +0900,
 "Update_time"=>nil,
 "Check_time"=>nil,
 "Collation"=>"utf8_unicode_ci",
 "Checksum"=>nil,
 "Create_options"=>"",
 "Comment"=>""}