cppcms-users

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

[augustin <aug...@ov...>]

Hello,



How to format  a readable date from a unix timestamp within a template?

I thought it would be something straightforward to do but I seem to be stuck.
I've spent a fair amount of time reading the API documentation, the cppcms 
wiki, and code examples found in cpp blog, but the only thing I ever get 
displayed within my application is the unix timestamp itself.

I have tried all of the following within my .tmpl file, but none of them 
actually filter the timestamp:

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.

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

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

> 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.
 

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

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

[augustin <aug...@ov...>]

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.



-- 
Friends: http://www.reuniting.info/
My projects:
http://astralcity.org/ http://lesenjeux.fr/ http://linux.overshoot.tv/ 
http://overshoot.tv/ http://charityware.info/ http://masquilier.org/
http://openteacher.info/ http://minguo.info/ http://jacqueslemaire.fr/ 
http://www.wechange.org/ http://searching911.info/












.

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.
 
 
 
 -- 
 Friends: http://www.reuniting.info/
 My projects:
 http://astralcity.org/ http://lesenjeux.fr/ http://linux.overshoot.tv/ 
 http://overshoot.tv/ http://charityware.info/ http://masquilier.org/
 http://openteacher.info/ http://minguo.info/ http://jacqueslemaire.fr/ 
 http://www.wechange.org/ http://searching911.info/
 
 
 
 
 
 
 
 
 
 
 
 
 .
 
 ------------------------------------------------------------------------------
 Sponsored by Intel(R) XDK 
 Develop, test and display web and hybrid apps with a single
 code base.
 Download it for free now!
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 _______________________________________________
 Cppcms-users mailing list
 Cpp...@li...
 https://lists.sourceforge.net/lists/listinfo/cppcms-users
 

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

[augustin <aug...@ov...>]

On Monday, December 09, 2013 02:24:42 PM Artyom Beilis wrote:
> 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.

That's it!
Thanks a lot.

Do you think it would be useful for me to add something about this in the 
wiki?
If you wish, I can create a page in an appropriate place to document such 
newbie gotchas.


augustin.




.

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

[sergey l. <ccp...@gm...>]

Hello friends!

There are some references about locale in stream in documentation.

http://cppcms.com/cppcms_ref/latest/classcppcms_1_1application.html#a3a1342b4834c8cdb79c2619dff010319

Render a template template_name of a skin skin using content content to an
output stream out. Note: You are responsible to imbue suitable locale to
the stream.


On Tue, Dec 10, 2013 at 5:54 AM, augustin <aug...@ov...>wrote:

> On Monday, December 09, 2013 02:24:42 PM Artyom Beilis wrote:
> > 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.
>
> That's it!
> Thanks a lot.
>
> Do you think it would be useful for me to add something about this in the
> wiki?
> If you wish, I can create a page in an appropriate place to document such
> newbie gotchas.
>
>
> augustin.
>
>
>
>
> .
>
>
> ------------------------------------------------------------------------------
> Sponsored by Intel(R) XDK
> Develop, test and display web and hybrid apps with a single code base.
> Download it for free now!
>
> http://pubads.g.doubleclick.net/gampad/clk?id=111408631&iu=/4140/ostg.clktrk
> _______________________________________________
> Cppcms-users mailing list
> Cpp...@li...
> https://lists.sourceforge.net/lists/listinfo/cppcms-users
>