On Thu, Jan 24, 2013 at 2:35 AM, Werner <[email protected]> wrote: > Hi.. I need some support... > > table: > week_id, user_id, project_id, hours > ex. => > 33, 2, 1, 10 > 34, 2,1,15 > 33, 2, 2, 20 > 35, 3, 1,20 > etc. > > Want to display a sum of hours per week_id per user_id > I have: > > @hours = HourUser.includes(:user).group_by { |h| h.week_id } > > @hours.keys.sort.each do |hour| > @hours[hour].collect(&:stunden).sum > > Hours are summed up, but not sorted by user_id.. > How to get that?
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