railsにおける時間表示フォーマット【回転】

railsで時間を表示する必要がある場合、時間をフォーマットする方法は一般的にstrftimeを選択します.次にstrftimeについて説明します.
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によるダイナミック表示時間の実現
2010-12-17 16:25
表示:

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

  
コントローラ:

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