On Jan 13, 3:42 pm, "[EMAIL PROTECTED]" <[EMAIL PROTECTED]> wrote:
> Hi all,
>
> I submitted a patch a couple of days ago that makes it possible to
> group on multiple fields when using AR calculations (http://
> dev.rubyonrails.org/ticket/10771)
>
> Given this table for a Sample model:
>
> id year month value
> 1 2007 3 1
> 2 2007 3 2
> 3 2007 4 4
> 4 2007 4 10
> 5 2007 5 12
> 6 2007 5 3
> 7 2007 5 1
> 8 2008 1 3
>
> Sample.count(:id, :group => [:year, :month]) and
> Sample.count(:id, :group => 'year, month') currently fail. The patch
> makes both work, returning a nested structure like this:
> [[ 2007, [[3,2], [4,2], [5,3]] ], [ 2008, [[1,1]]]]
>
> (the order of nesting is controller by the order of the fields in the
> group param, of course).
>
> I'd love feedback on the implementation.
I like the idea, but might suggest returning nested hashes instead. I
find them easier to work with. Is that doable? Something like:
[ 2007 => { 3=>2, 4=>2, 5=> 3 }, 2008 => { 1=>1 } ]
Just a thought.
Jeff
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