On Martes, 18 de Octubre de 2011 00:57:23 SOREN CHRISTENSEN escribió:
> Hi,
>
> Has anyone put in the effort to get the standard ActiveScaffold
> calculations work on Virtual Coulmns?
>
> Quantity_sold is a virtual column defined in the model (as opposed to being
> a database column). But AS does not support calculations for those.
>
> config.columns[:quantity_sold].calculate = :sum
>
> Is this doable with reasonable effort ?
>
> /S
You must set a proc, for example:
config.columns[:quantity_sold].calculate = proc{|records|
records.map(&:quantity_sold).sum}
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