Ruby on rails 更精确的时间距离（大写）

用词来说，时间的距离很好，但有时不够精确

我需要一个函数，它可以用文字报告精确的时间距离。例如，上午7:50到10:10的距离应该是“2小时20分钟”，而不是“大约2小时”，或者用词来说是时间的距离

我的用例是报告火车时刻表，特别是给定的火车行程需要多长时间。

def distance\u of\u time\u以小时和分钟为单位（从时间到时间）
def distance_of_time_in_hours_and_minutes(from_time, to_time)
  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_hours   = (((to_time - from_time).abs) / 3600).floor
  distance_in_minutes = ((((to_time - from_time).abs) % 3600) / 60).round

  difference_in_words = ''

  difference_in_words << "#{distance_in_hours} #{distance_in_hours > 1 ? 'hours' : 'hour' } and " if distance_in_hours > 0
  difference_in_words << "#{distance_in_minutes} #{distance_in_minutes == 1 ? 'minute' : 'minutes' }"
end

from_time=from_time.to_time如果是from_time.response_to？（：to_time）
to_time=to_time.to_time如果to_time.response_to？（：to_time）
以小时为单位的距离=（（到时间-从时间）.abs）/3600）。楼层
以分钟为单位的距离=（（（到时间-从时间）.abs）%3600）/60）。整轮
单词中的差异=“”
单词0中的差异
上面的代码把我的Rubymine搞糊涂了。。。我不确定它是否正确。我将其重建如下：


def distance_of_time_in_hours_and_minutes(from_time, to_time)
  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)
  dist = to_time - from_time
  minutes = (dist.abs / 60).round
  hours = minutes / 60
  minutes = minutes - (hours * 60)

  words = dist <= 0 ? '' : '-'

  words << "#{hours} #{hours > 1 ? 'hours' : 'hour' } and " if hours > 0
  words << "#{minutes} #{minutes == 1 ? 'minute' : 'minutes' }"
end

（请注意，我在编码环境中使用
helper
预先设置了每次调用
distance\u of_time\u in_miles
，以避免出现命名错误——例如，请参阅以获取更多信息。
我将更改行距离（in_hours=（（to_time-from_time）.abs）/3600）。四舍五入到distance\u in_hours=((（to_time-from_time）.abs）/3600）。to_i这轮将取整，使1.5小时看起来像2小时30分钟。我建议使用
（（to_time-from_time.abs）/3600）。floor
而不是
（（to_time-from_time.abs）/3600）。取整
，因为有时它显示“2小时50分钟”当时间相差1小时和50分钟时，这行“words=dist-Updated-Link:实际上效果更好。

describe "Distance of Time in Hours and Minutes" do
  before do
    @time1 = Time.utc(2010,"sep",7,14,15,3)
    @time2 = @time1 + 28
    @time3 = @time1 + 30
    @time4 = @time1 + 60
    @time5 = @time1 + 60*60
    @time6 = @time1 + 60*60 + 60
    @time7 = @time1 + 60*60 + 5*60
  end

  it "calculates time differences properly" do
    distance_of_time_in_hours_and_minutes(@time1, @time1).should == "0 minutes"
    distance_of_time_in_hours_and_minutes(@time1, @time2).should == "0 minutes"
    distance_of_time_in_hours_and_minutes(@time1, @time3).should == "1 minute"
    distance_of_time_in_hours_and_minutes(@time1, @time4).should == "1 minute"
    distance_of_time_in_hours_and_minutes(@time1, @time5).should == "1 hour and 0 minutes"
    distance_of_time_in_hours_and_minutes(@time1, @time6).should == "1 hour and 1 minute"
    distance_of_time_in_hours_and_minutes(@time1, @time7).should == "1 hour and 5 minutes"
    distance_of_time_in_hours_and_minutes(@time7, @time1).should == "-1 hour and 5 minutes"
    distance_of_time_in_hours_and_minutes(@time3, @time1).should == "-1 minute"
  end
end