sub-totals in tables

rubyonrails-talk
1

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

2

Can't you simply group them then use the sum rails Enumerable method?

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3

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."