How can I get sub-totalling in tables? I have an ActiveResource model which gets it''s data from a legacy Windows app via REST. The records are ordered by date. I need to display subtotals by week number. It looks like I''ll have to code something, which isn''t a problem, but this is such a common pattern someone must have done something before me. Any clues? John Small -- Posted via http://www.ruby-forum.com/.
On 19/05/2009, at 11:57 PM, John Small <rails-mailing-list@andreas- s.net> wrote:> > How can I get sub-totalling in tables? > > I have an ActiveResource model which gets it''s data from a legacy > Windows app via REST. The records are ordered by date. I need to > display > subtotals by week number. It looks like I''ll have to code something, > which isn''t a problem, but this is such a common pattern someone must > have done something before me. > > Any clues? > > John Small > -- > Posted via http://www.ruby-forum.com/. > > >Can''t you simply group them then use the sum rails Enumerable method? Blog: http://random8.zenunit.com/ Twitter: http://twitter.com/random8r Learn: http://sensei.zenunit.com/ New video up now at http://sensei.zenunit.com/ real fastcgi rails deploy process! Check it out now!
Have you looked at the group_by method of Enumerable? "Collect an enumerable into sets, grouped by the result of a block. Useful, for example, for grouping records by date." On May 19, 6:57 am, John Small <rails-mailing-l...-ARtvInVfO7ksV2N9l4h3zg@public.gmane.org> wrote:> How can I get sub-totalling in tables? > > I have an ActiveResource model which gets it''s data from a legacy > Windows app via REST. The records are ordered by date. I need to display > subtotals by week number. It looks like I''ll have to code something, > which isn''t a problem, but this is such a common pattern someone must > have done something before me. > > Any clues? > > John Small > -- > Posted viahttp://www.ruby-forum.com/.