Builds totals and counts for a scope or conditions

chart_data.rb

  scope :summarized_by_app_and_date, select("app_id, occurred_on, count(*) as count,sum(total) as total").group("app_id, occurred_on").order("app_id, occurred_on")
  def self.chart_data(conditions_or_scope)
    if conditions_or_scope.is_a?(ActiveRecord::Relation)
      totals = conditions_or_scope.summarized_by_app_and_date.all
    else
      totals = where(conditions_or_scope).summarized_by_app_and_date.all
    end
    totals.inject({:count => {}, :total => {}}) do |h,t| 
      h[:count][t.app_id] ||= []
      h[:total][t.app_id] ||= [] 
      h[:count][t.app_id] << [t.occurred_on.to_time.to_i*1000,t.count]
      h[:total][t.app_id] << [t.occurred_on.to_time.to_i*1000,t.total]
      h
    end
  end