example.ruby

  private def period_cond(t_alias = 'f', t_column = 'created_at')
    beginning_date, end_date =
      case options.period
      when 'this_week'
        [Date.current.beginning_of_week.to_date, Date.current.to_date]
      when 'this_month'
        [Date.current.beginning_of_month.to_date, Date.current.to_date]
      when 'this_quarter'
        [Date.current.beginning_of_quarter.to_date, Date.current.to_date]
      when 'this_year'
        [Date.current.beginning_of_year.to_date, Date.current.to_date]
      when 'last_week'
        [1.week.ago.beginning_of_week.to_date, 1.week.ago.end_of_week.to_date]
      when 'last_month'
        [1.month.ago.beginning_of_month.to_date, 1.month.ago.end_of_month.to_date]
      when 'last_quarter'
        [(Date.current.beginning_of_quarter - 3.months).to_date, (Date.current.beginning_of_quarter - 1.day).to_date]
      when 'last_year'
        [1.year.ago.beginning_of_year.to_date, 1.year.ago.end_of_year.to_date]
      end
      
    period_cond_sql(beginning_date, end_date, t_alias, t_column)
  end