R.rb

def tickets
  case
  when filters.excel
    range_tickets
  when filters.avia_offset.present? == false
    range_tickets[0..24]
  when filters.from_postsale
    range_tickets[0...filters.avia_offset]
  else
    range_tickets[filters.avia_offset..filters.avia_offset + 9] || []
  end
end