NoobOnRails

Ruby on Rails tips, tricks and hints for the aspiring rails hero.



Monday, November 21, 2005

Prim and proper dates


Since Rails will automatially maintain "created_on" and/or "updated_on" fields if you create them in your database, most everyone adds them (by most everyone I mean myself and....well, no....just myself). Having these date fields is all fine and dandy but honestly,

Fri Nov 18 00:10:53 Mountain Standard Time 2005 (FNMST for short)

aint gonna cut it in today's ajaxed,web-two-dot-oh world. So, how do you make your dates look decent enough to be normal? Why with .strftime() of course. Say you have a created_on datetime field in your database and you're calling it in a view with a little

<%= book.created_on %>

action. Purty it up by adding strftime like so:

<%= book.created_on.strftime("%m-%d-%y") %>

I bet you already figured out what the m, d and y stand for. If not, for shame! Fret not though, you do have more options to choose from, here's a list I found in the Ruby documentation (in the help files actually)

Time#strftime directives
Format Meaning
%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


Enjoy!

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