Re: [Cppcms-users] How to format readable date from unix timestamp within template?

[Artyom B. <art...@ya...>]

The problem with this clode

 std::ostringstream buf;
 app()->render(std::string("my_skin"), std::string("book_page"), buf, c);
 cp->rContent = buf.str();

is that buf does not have a locale object associated with it.

You need to add following line

buf.imbue(app()->context().locale());

i.e.

 std::ostringstream buf;
 buf.imbue(app()->context().locale());
 app()->render(std::string("my_skin"), std::string("book_page"), buf, c);
 cp->rContent = buf.str();

The response().out() - the default output already has a locale embedded in it.
when you create a generic std::ostream you need to imbue application
specific locale (even if it is default system locale) to make various localization
related tools to work.


Artyom Beilis
--------------
CppCMS - C++ Web Framework:   http://cppcms.com/
CppDB - C++ SQL Connectivity: http://cppcms.com/sql/cppdb/

--------------------------------------------
On Mon, 12/9/13, augustin <aug...@ov...> wrote:

 Subject: Re: [Cppcms-users] How to format readable date from unix timestamp within template?
 To: cpp...@li...
 Date: Monday, December 9, 2013, 2:25 AM
 
 On Sunday, December 08, 2013 05:52:31
 PM Artyom Beilis wrote:
 > > r.date_returned is a time_t unix timestamp.
 > > 
 > >  <% gt "{1,datetime=s}" using
 r.date_returned %>
 > >  <%= r.date_returned | date %>
 > >  <%= r.date_returned |
 strftime("%d/%m/%Y") %>
 > > 
 > > What am I missing?
 > > 
 > >   thanks,
 > >  
 > >  augustin.
 > 
 > It actually should work....
 > 
 > How do you render the template?
 > What are the locale settings?
 > Do you render to a stream that isn't the
 respone().out()?
 > 
 > The only point I can see that this isn't working is
 that the stream you
 > are rendering into is missing the locale
 configuration.
 
 
 Thanks for your reply, Artyom, as always.
 
 
 For my locale, I have in config.js:
         "localization" : {
                
 "locales" : ["en_US.UTF-8"],
         },
 I have not yet specifically studied locale and translations.
 For the time 
 being English is hard coded in my application.
 
 
 That particular piece of template is rendered thus:
 
 
 namespace content {
 struct book_page : public cppcms::base_content;
 }
  
 void view_book::render_main_content(content::page* cp) {
   content::book_page c;
   // ... snipped parts where I add content to c,
 including r.date_returned.
 std::ostringstream buf;
 // app() returns a pointer to my class myApp : public
 cppcms::application;
   app()->render(std::string("my_skin"),
 std::string("book_page"), buf, c);
   cp->rContent = buf.str();
 }
 
 I have simplified the code above. Hopefully, I have not
 removed anything 
 relevant.
 
 The wiki page about template filters is pretty long:
 http://cppcms.com/wikipp/en/page/cppcms_1x_templates_comm
 Do you think I should complement it by setting up a separate
 wiki page about 
 best practices for rendering times and dates?
 
 
 
 Thanks,
 
 augustin.
 
 
 
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