如何使用 ruby on rails 生成人类可读的时间范围
问题描述：
我正在尝试寻找生成以下输出的最佳方法
I'm trying to find the best way to generate the following output
<name> job took 30 seconds
<name> job took 1 minute and 20 seconds
<name> job took 30 minutes and 1 second
<name> job took 3 hours and 2 minutes
我开始这段代码
def time_range_details
time = (self.created_at..self.updated_at).count
sync_time = case time
when 0..60 then "#{time} secs"
else "#{time/60} minunte(s) and #{time-min*60} seconds"
end
end
有没有更有效的方法来做到这一点.对于超级简单的事情来说，似乎有很多冗余代码.
Is there a more efficient way of doing this. It seems like a lot of redundant code for something super simple.
另一个用途是:
<title> was posted 20 seconds ago
<title> was posted 2 hours ago
此代码类似，但我使用 Time.now:
The code for this is similar, but instead i use Time.now:
def time_since_posted
time = (self.created_at..Time.now).count
...
...
end
答
如果您需要比 distance_of_time_in_words，您可以按照以下方式编写:
If you need something more "precise" than distance_of_time_in_words, you can write something along these lines:
def humanize secs
[[60, :seconds], [60, :minutes], [24, :hours], [Float::INFINITY, :days]].map{ |count, name|
if secs > 0
secs, n = secs.divmod(count)
"#{n.to_i} #{name}" unless n.to_i==0
end
}.compact.reverse.join(' ')
end
p humanize 1234
#=>"20 minutes 34 seconds"
p humanize 12345
#=>"3 hours 25 minutes 45 seconds"
p humanize 123456
#=>"1 days 10 hours 17 minutes 36 seconds"
p humanize(Time.now - Time.local(2010,11,5))
#=>"4 days 18 hours 24 minutes 7 seconds"
哦，对你的代码有一句话:
Oh, one remark on your code:
(self.created_at..self.updated_at).count
真的是获得差异的糟糕方法.简单使用:
is really bad way to get the difference. Use simply:
self.updated_at - self.created_at