module Sinatra::Helpers

def time_for(value)
  if value.is_a? Numeric
    Time.at value
  elsif value.respond_to? :to_s
    Time.parse value.to_s
  else
    value.to_time
  end
rescue ArgumentError => e
  raise e
rescue Exception
  raise ArgumentError, "unable to convert #{value.inspect} to a Time object"
end