Rails - Oct 2008 - European Date Format (newbie!)

Rails 2.0

Hi there,

There are a few topics on here that relate to my problem but none are
helping as i''m new to this and there are lots of confusing posts on
google.

I need to chage the way dates are input and displayed in my app. This
is for a european app so the dates need to work as DD/MM/YYYY not the
America way.

Now I don''t mind keeping the datbase in the orginal Date format as I
won''t be accessing it directly however I guess I need to wrtite
something in my model to change the way the dates are done?

Anybody able to help?

Many thanks.

Nick

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On 21 Oct 2008, at 22:21, Nicktabs wrote:
> There are a few topics on here that relate to my problem but none are
> helping as i''m new to this and there are lots of confusing posts
on
> google.
>
> I need to chage the way dates are input and displayed in my app. This
> is for a european app so the dates need to work as DD/MM/YYYY not the
> America way.
>
> Now I don''t mind keeping the datbase in the orginal Date format as
I
> won''t be accessing it directly however I guess I need to wrtite
> something in my model to change the way the dates are done?
Showing them in European date format is easy, almost every  
localization plugin out there provides it in some way and you can do  
it yourself quite easily too. Input is a totally different matter, as  
far as I know there is no transparent way to make Rails process  
European date and number formats from input fields. I''ve implemented a
few hacky solutions in the past, like using method_missing or  
generating a number of new methods to convert one format to the other,  
but in the end it doesn''t feel right at all.

There have been some discussions in the Rails i8n group about it, but  
those also seem to have died a silent death and localization in the  
next version is very basic (but easier to plugin on, although I still  
have serious doubts about date and number formats, since those would  
require quite some changes in the fundations of the framework).

I hope someone of the i8n people will chime in on this post and be  
able to tell you what to expect, I might be wrong in what I said (so  
hung up in a project I haven''t been able to follow the discussion).


Best regards

Peter De Berdt


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> I need to chage the way dates are input and displayed in my app. This
> is for a european app so the dates need to work as DD/MM/YYYY not the
> America way.
>
> Now I don''t mind keeping the datbase in the orginal Date format as
I
> won''t be accessing it directly however I guess I need to wrtite
> something in my model to change the way the dates are done?
I use the DATE format in the database. I convert the format on input
and output.

Input from a form:
  def convert_european_date(date)

    # Authorize ISO date
    return date unless (/^\d{4}-\d{2}-\d{2}$/).match(date).nil?

    # Convert european date
    match = /(\d{1,2}).(\d{1,2}).(\d{2,4})/.match(date)
    begin
      Date.new(match[3].to_i, match[2].to_i, match[1].to_i)
    rescue
      return false
    end
  end

Display:
<%= due_date.to_s(:european) %>

In initializers/date_formats.rb:
ActiveSupport::CoreExtensions::Date::Conversions::DATE_FORMATS.merge!
(:european => ''%d/%m/%Y'')
ActiveSupport::CoreExtensions::Date::Conversions::DATE_FORMATS.merge!
(:american => ''%m/%d/%Y'')

Christian
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On Tue, Oct 21, 2008 at 4:21 PM, Nicktabs
<nick-U86Pd/foh5XQXOPxS62xeg@public.gmane.org>
wrote:
> I need to chage the way dates are input and displayed in my app. This
> is for a european app so the dates need to work as DD/MM/YYYY not the
> America way.
Not a complete solution, but building blocks:

http://ruby-doc.org/core/classes/Date.html#M000655
http://ruby-doc.org/core/classes/Date.html#M000620
http://www.ruby-doc.org/core/classes/Time.html#M000297

puts  Date.strptime("22/10/2008",
"%d/%m/%Y").strftime("%d/%m/%Y")

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