Time parsing issue

elricstorm · July 11, 2009, 2:42pm

<% if schedule.date_scheduled.strftime(’%I:%M %p’) == ‘12:00 AM’ %>

TBA <% else %> <%=h schedule.date_scheduled.strftime('%I:%M %p') %> <% 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.

elricstorm · July 11, 2009, 3:14pm

2009/7/11 Ã„lphÃ¤ BlÃ¼Ã« [email protected]:

=> 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

elricstorm · July 11, 2009, 4:03pm

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…

elricstorm · July 11, 2009, 4:19pm

2009/7/11 Ã„lphÃ¤ BlÃ¼Ã« [email protected]:

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 %
and the second is %. 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

elricstorm · July 11, 2009, 4:30pm

I had been looking at:

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

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…

elricstorm · July 11, 2009, 4:54pm

Am 11.07.2009 um 16:43 schrieb Colin L.:

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"

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

elricstorm · July 11, 2009, 4:44pm

2009/7/11 Ã„lphÃ¤ BlÃ¼Ã« [email protected]:

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. Â 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

elricstorm · July 11, 2009, 5:07pm

Felix SchÃ¤fer wrote:

Am 11.07.2009 um 16:43 schrieb Colin L.:

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"

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

Felix if I test just using Time.now.strftime("%l:%M %p") I get
=> “”

elricstorm · July 11, 2009, 5:08pm

I’m using Rails 2.3.2
I’m using Ruby 1.8.6 One click installer for windows

elricstorm · July 11, 2009, 5:17pm

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…

elricstorm · July 11, 2009, 5:26pm

2009/7/11 Ã„lphÃ¤ BlÃ¼Ã« [email protected]:

that’s part of them…
It is ok for me on ruby 1.8.7, rails 2.3.2.

Colin

elricstorm · July 11, 2009, 5:53pm

On Sat, Jul 11, 2009 at 8:17 AM, Älphä
Blüë[email protected] wrote:

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…

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,

Hassan S. ------------------------ [email protected]
twitter: @hassan

elricstorm · July 11, 2009, 7:00pm

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]

elricstorm · July 11, 2009, 5:04pm

well the strange thing is I tried:

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

… and it doesn’t remove the leading 0…

however… if I go to the rails console

parse
=> “08:00 AM”
parse.gsub(/0?(\d):/,’\1:’)
=> “8:00 AM”

… very strange and tested in all browsers so same behavior