def distance_of_time_in_words(from_time, to_time = 0, include_seconds = false, options = {})
options = {
:scope => 'datetime.distance_in_words''datetime.distance_in_words',
}.merge!(options)
from_time = from_time.to_time if from_time.respond_to?(:to_time)
to_time = to_time.to_time if to_time.respond_to?(:to_time)
distance = (to_time.to_f - from_time.to_f).abs
distance_in_minutes = (distance / 60.0).round
distance_in_seconds = distance.round
I18n.with_options :locale => options[:locale], :scope => options[:scope] do |locale|
case distance_in_minutes
when 0..1
return distance_in_minutes == 0 ?
locale.t(:less_than_x_minutes, :count => 1) :
locale.t(:x_minutes, :count => distance_in_minutes) unless include_seconds
case distance_in_seconds
when 0..4 then locale.t :less_than_x_seconds, :count => 5
when 5..9 then locale.t :less_than_x_seconds, :count => 10
when 10..19 then locale.t :less_than_x_seconds, :count => 20
when 20..39 then locale.t :half_a_minute
when 40..59 then locale.t :less_than_x_minutes, :count => 1
else locale.t :x_minutes, :count => 1
end
when 2..44 then locale.t :x_minutes, :count => distance_in_minutes
when 45..89 then locale.t :about_x_hours, :count => 1
when 90..1439 then locale.t :about_x_hours, :count => (distance_in_minutes.to_f / 60.0).round
when 1440..2519 then locale.t :x_days, :count => 1
when 2520..43199 then locale.t :x_days, :count => (distance_in_minutes.to_f / 1440.0).round
when 43200..86399 then locale.t :about_x_months, :count => 1
when 86400..525599 then locale.t :x_months, :count => (distance_in_minutes.to_f / 43200.0).round
else
fyear = from_time.year
fyear += 1 if from_time.month >= 3
tyear = to_time.year
tyear -= 1 if to_time.month < 3
leap_years = (fyear > tyear) ? 0 : (fyear..tyear).count{|x| Date.leap?(x)}
minute_offset_for_leap_year = leap_years * 1440
minutes_with_offset = distance_in_minutes - minute_offset_for_leap_year
remainder = (minutes_with_offset % 525600)
distance_in_years = (minutes_with_offset / 525600)
if remainder < 131400
locale.t(:about_x_years, :count => distance_in_years)
elsif remainder < 394200
locale.t(:over_x_years, :count => distance_in_years)
else
locale.t(:almost_x_years, :count => distance_in_years + 1)
end
end
end
end