How do I get ActiveRecord to show the next id (last + 1) in Ruby on Rails?

Question

Is there a compact way with ActiveRecord to query for what id it\'s going to use next if an object was going to be persisted to the database? In SQL, a query like this would

Answer 1

If no one else is using the table (otherwise you would have to use locking), you could get the autoincrement value from MySQL, the SQL command is

SELECT auto_increment FROM information_schema.tables 
WHERE table_schema = 'db_name' AND table_name = 'table_name';

and the Rails command would be

ActiveRecord::Base.connection.execute("SELECT auto_increment 
     FROM information_schema.tables 
     WHERE table_schema = 'db_name' AND table_name = 'table_name';").first[0]