2008-06-25
ruby 日期
关键字: ruby time- difference = Time.now - time
- seconds = difference % 60
- difference = (difference - seconds) / 60
- minutes = difference % 60
- difference = (difference - minutes) / 60
- hours = difference % 24
- difference = (difference - hours) / 24
- days = difference % 7
- difference = (difference - days) / 7
- weeks = difference % 4
- difference = (difference - weeks) / 4
- months = difference % 12
- years = (difference - months) / 12
- puts "(#{years} years , #{months} months ,#{weeks} weeks, #{days} days, #{hours}:#{minutes}:#{seconds})"
rail 实现
- def distance_of_time_in_words(from_time, to_time = 0, include_seconds = false)
- 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_in_minutes = (((to_time - from_time).abs)/60).round
- distance_in_seconds = ((to_time - from_time).abs).round
- case distance_in_minutes
- when 0..1
- return (distance_in_minutes == 0) ? 'less than a minute' : '1 minute' unless include_seconds
- case distance_in_seconds
- when 0..4 then 'less than 5 seconds'
- when 5..9 then 'less than 10 seconds'
- when 10..19 then 'less than 20 seconds'
- when 20..39 then 'half a minute'
- when 40..59 then 'less than a minute'
- else '1 minute'
- end
- when 2..44 then "#{distance_in_minutes} minutes"
- when 45..89 then 'about 1 hour'
- when 90..1439 then "about #{(distance_in_minutes.to_f / 60.0).round} hours"
- when 1440..2879 then '1 day'
- when 2880..43199 then "#{(distance_in_minutes / 1440).round} days"
- when 43200..86399 then 'about 1 month'
- when 86400..525599 then "#{(distance_in_minutes / 43200).round} months"
- when 525600..1051199 then 'about 1 year'
- else "over #{(distance_in_minutes / 525600).round} years"
- end
- end
中文实现:
- #相对现在来格式化时间
- def time_ago_in_words_zh(from_time, include_seconds = false)
- distance_of_time_in_words(from_time,Time.now,include_seconds)
- end
- def distance_of_time_in_words(from_time, to_time = 0, include_seconds = false)
- 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_in_minutes = (((to_time - from_time).abs)/60).round
- distance_in_seconds = ((to_time - from_time).abs).round
- case distance_in_minutes
- when 0..1
- return ' 1 分钟' unless include_seconds
- case distance_in_seconds
- when 0..4 then ' 5 秒'
- when 5..9 then ' 10 秒'
- when 10..19 then ' 20 秒'
- when 20..39 then ' 半分钟'
- else ' 1 分钟'
- end
- when 2..44 then " #{distance_in_minutes} 分钟"
- when 45..1439 then " #{(distance_in_minutes.to_f / 60.0).round} 小时"
- when 1440..2879 then ' 昨天'
- when 2880..4319 then ' 前天'
- when 4320..43199 then " #{(distance_in_minutes / 1440).round} 天"
- when 43200..525599 then " #{(distance_in_minutes / 43200).round} 个月"
- else " #{(distance_in_minutes / 525600).round} 年"
- end
- end
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