Sometimes I need to reload some object from database, but I do not always need to reload every attribute. If I know what attribute I need to reload it would be great to do it, without performing huge select.
This patch is implementing this feature. It adds methods to AR::Base, equal to attribute names, but ending with exclamation mark. Such methods do reload attribute from database, but instead of:
select * from table_name;
it does
select field from table_name;
So, I can use @post.title, if I need to get a cached title, or I can use @post.title!, if I need to fetch it directly from database.
http://rails.lighthouseapp.com/projects/8994-ruby-on-rails/tickets/459-added-reloadable-attributes-support#ticket-459-1 — here is the ticket, i've opened for this feature. You can find a patch there.
