如何在Rails 3中以'hours：minutes：seconds'顯示時間？

Question

我花了很多時間來回答我的問題，但我什麼都沒有發現。

如何在'hours：minutes：seconds'中顯示時間格式，例如：20:30:12？我嘗試將語言環境從> time改爲：「％H：％M」< to> time：「％H：％M：％S」<因爲我看到％S是秒，但沒有效果:(

我做錯

感謝答案

Answer 1

Time.now.strftime("%H:%M:%S") 

Answer 2

使用時間＃strftime的方法

你的情況：？！

t = Time.now 
t.strftime("%H:%M:%S") #=> "12:09:34" 

不同的格式：

%a - The abbreviated weekday name (``Sun'') 
    %A - The full weekday name (``Sunday'') 
    %b - The abbreviated month name (``Jan'') 
    %B - The full month name (``January'') 
    %c - The preferred local date and time representation 
    %d - Day of the month (01..31) 
    %H - Hour of the day, 24-hour clock (00..23) 
    %I - Hour of the day, 12-hour clock (01..12) 
    %j - Day of the year (001..366) 
    %m - Month of the year (01..12) 
    %M - Minute of the hour (00..59) 
    %p - Meridian indicator (``AM'' or ``PM'') 
    %S - Second of the minute (00..60) 
    %U - Week number of the current year, 
      starting with the first Sunday as the first 
      day of the first week (00..53) 
    %W - Week number of the current year, 
      starting with the first Monday as the first 
      day of the first week (00..53) 
    %w - Day of the week (Sunday is 0, 0..6) 
    %x - Preferred representation for the date alone, no time 
    %X - Preferred representation for the time alone, no date 
    %y - Year without a century (00..99) 
    %Y - Year with century 
    %Z - Time zone name 
    %% - Literal ``%'' character 

然後你就可以像建立格式：

t = Time.now 
    t.strftime("Printed on %m/%d/%Y") #=> "Printed on 04/09/2003" 
    t.strftime("at %I:%M%p")   #=> "at 08:56AM"