Time parsing issue

rubyonrails-talk
1

<% if schedule.date_scheduled.strftime('%I:%M %p') == '12:00 AM' %>   <td class="leftAlign">TBA</td> <% else %>   <td class="leftAlign"><%=h schedule.date_scheduled.strftime('%I:%M %p') %></td> <% end %>

Works fine - datetime formats that are say "2009-06-30 17:30:00" will show up as: => 05:30 PM

But if I change this to a 12-hour clock without the leading 0 using

schedule.date_scheduled.strftime('%l:%M %p') =>

.. nothing..

If I'm not using the correct formatting string for a 12-hour clock without the leading 0, which is the correct output?

Thanks.

2

<% if schedule.date_scheduled.strftime('%I:%M %p') == '12:00 AM' %> <td class="leftAlign">TBA</td> <% else %> <td class="leftAlign"><%=h schedule.date_scheduled.strftime('%I:%M %p') %></td> <% end %>

Works fine - datetime formats that are say "2009-06-30 17:30:00" will show up as: => 05:30 PM

But if I change this to a 12-hour clock without the leading 0 using

I don't understand, when you say 'you change this to a 12-hour clock' what is it that you have changed? The value in schedule.date_scheduled or what?

Colin

3

schedule.date_scheduled.strftime('%I:%M %p') => 05:30 PM

schedule.date_scheduled.strftime('%l:%M %p') => nothing...

.. it should equal

schedule.date_scheduled.strftime('%l:%M %p') => 5:30 PM

I'm trying to remove the leading 0 off the hours slot...

4

schedule.date_scheduled.strftime('%I:%M %p') => 05:30 PM

schedule.date_scheduled.strftime('%l:%M %p') => nothing...

I thought I must be going blind as in gmail in FF the two lines above look identical, it was only when I copied and pasted into my editor in order to do a compare that I realised the first on is %<upper case i> and the second is %<lower case L>. I don't see lower case L in the docs for strftime, which may explain the problem.

This link has some possibly helpful suggestions for removing the leading zero: http://snippets.dzone.com/posts/show/2952

Colin

5

I had been looking at:

http://www.nullislove.com/2007/05/16/time-for-strftime/

Thanks for that, a very useful link.

If you scroll down towards the bottom, there's a very large table that contains the formats. I was trying to follow the one for 12-hour without the leading number.

I guess this means I have to use gsub..

Interestingly, in irb: irb(main):006:0> Time.now.strftime("%I:%M %p") # upper case i => "03:39 PM" irb(main):007:0> Time.now.strftime("%l:%M %p") # lower case l => " 3:39 PM"

What class is your schedule.date_scheduled? (use schedule.date_scheduled.class to find out)

Colin

6

Could it be that something on the way to the browser chokes on the leading whitespace? Maybe try the code in script/console, and continue adding stuff around your strftime(...) until you find the culprit.

Regards,

Felix

7

NM..

This actually does work:

schedule.date_scheduled.strftime('%I:%M %p').gsub(/0?(\d):/,'\1:')

I had to place it in another place because I forgot I was looking for a conditional. The %l does not work and it may just be ruby version related. I'm sure that 1.9 came out with new time features and maybe that's part of them..

8

It is ok for me on ruby 1.8.7, rails 2.3.2.

Colin

9

ripple:~ hassan$ ruby -v ruby 1.8.6 (2008-03-03 patchlevel 114) [universal-darwin9.0] ripple:~ hassan$ irb irb(main):001:0> Time.now.strftime("%I:%M %p") # u/c I as in India => "08:46 AM" irb(main):002:0> Time.now.strftime("%l:%M %p") # l/c l as in Lima => " 8:46 AM" irb(main):003:0>

FWIW,

10

I already solved this using gsub.

But, just to follow-through with this - I'm not lying when I did my checks:

irb(main):001:0> Time.now.strftime("%I:%M %p") => "12:57 PM" irb(main):002:0> Time.now.strftime("%l:%M %p") => "" irb(main):003:0>

l = lower case (l)ima (l)ime (l)azy (l)ucky..

Again, it does not compute with my IRB and I'm using:

ruby 1.8.6 (2008-08-11 patchlevel 287) [i386-mswin32]