On Tuesday, March 1, 2016 at 1:35:10 PM UTC-8, Happy wrote:
>
> Hi,
> lets consider this:
>
> ws=Log.where(:user_id=>user.id, week_number: wn).exclude(:dsum=>0).exclude
> (:day=>date).group_and_count(:user_id, :week_number).select_append{sum(
> dsum).as(dsum)}
>
> Is following code the only way how to get "dsum"?
> dsum=ws.to_hash.values[0][:dsum]
>
> Thank you for advice.
>
ws here is a dataset. I'm not sure if you want a single row or all the
rows. For a single row:
ws.first[:dsum]
For all the rows:
ws.each do |w|
w[:dsum]
end
You need to use [:dsum] instead of .dsum. This is expected as column
accessors are only setup for actual columns. If you want to use .dsum:
class Log
def_column_accessor :dsum
end
Thanks,
Jeremy
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