rails中的时间显示格式【转】

 

在rails中需要显示时间时,格式化时间的方法一般选用strftime,下面是关于strftime的一些介绍

strftime Format Codes

Year		Example
%Y	year with century	2010
%y	year without century	10
%C	century number (year divided by 100)	20

 

Month		Example
%B	full month name	January
%b	abbreviated month name	Jan
%h	same as %b	Jan
%m	month as number	(01-12)

 

Week		Example
%U	week number of the year, Sunday as first day of week	(00-53)
%W	week number of the year, Monday as first day of week	(00-53)

 

Day		Example
%A	full weekday name	Wednesday
%a	abbreviated weekday name	Wed
%d	day of the month	(01-31)
%e	day of the month, single digits preceded by space	( 1-31)
%j	day of the year	(001-366)
%w	weekday as a number, with 0 representing Sunday	(0-6)
%u	weekday as a number, with 1 representing Monday	(1-7)

 

Time		Example
%H	hour (24-hour clock)	(00-23)
%k	hour (24-hour clock); single digits preceded by space	( 0-23)
%I	hour (12-hour clock)	(01-12)
%l	hour (12-hour clock); single digits preceded by space	( 1-12)
%M	minute	(00-59)
%S	seconds	(00-59)
%p	either AM or PM	AM
%Z	timezone name or abbreviation	EDT
%z	timezone offset from UTC	-0400

 

Summaries		Example
%D	date, same as %m/%d/%y	05/16/07
%v	date, same as %e-%b-%Y	16-May-2007
%F	date, same as %Y-%m-%d	2007-05-16
%R	time, 24 hour notation, same as %H:%M	18:06
%T	time, 24 hour notation, same as %H:%M:%S	18:06:15
%r	time, am/pm notation, same as %I:%M:%S %p	06:06:15 PM

 

Formatting
%n	newline character
%t	tab character
%%	percent character

 

Less common formats
%s	number of seconds since the Epoch, UTC
%c	national date and time representation
%+	national date and time representation
%x	national date representation
%X	national time representation
%G	year with century, starting on first Monday where week has 4 or more days.
%g	year without century, starting on first Monday where week has 4 or more days.
%V	week number of the year, starting on first Monday where week has 4 or more days.

 

rails 实现 动态显示时间

2010-12-17 16:25

视图：  

<%= javascript_include_tag :defaults %>
 
<%= periodically_call_remote :url => new_ajax_fun_path, :update =>'result', :frequency => 1 %>
 
 <div id="result"></div>

  

控制器： 

def new
    respond_to do |wants|
      wants.js {render :text => Time.now.strftime("%Y-%m-%d %H:%M:%S")}
    end
end