On Sat, Sep 28, 2013 at 7:18 PM, Klerik <[email protected]> wrote:
> **
>
> KlerikOn Saturday 21 of September 2013 15:55:27 wrote:
>
> > On Saturday 21 of September 2013 19:22:27 Anand Chitipothu wrote:
>
> > > On Sat, Sep 21, 2013 at 7:07 PM, Klerik <[email protected]> wrote:
>
> > > > hi guys,
>
> > > >
>
> > > > I have one big problem. I need in my base teplate dynamically render
> my
>
> > > > categories (my web is blog with categories - http://www.klerik.cz[this
>
> > > > is old
>
> > > > production version with staticaly rendered categories - in left
>
> > > > column]).
>
> > > > So I create one global variable with this code:
>
> > > >
>
> > > > web.template.Template.globals['seznam_kategorii'] =
>
> > > > databaze.select("kategorie", order="cislo ASC")
>
> > > >
>
> > > > and on base.html I only print with for cycle all categories and all
>
> > > > works
>
> > > > great:
>
> > > >
>
> > > > $for kategorie in seznam_kategorii:
>
> > > > <a
>
> > > > href="/kategorie/"$kategorie.url_kategorie>$kategorie.kategorie</a>
>
> > > >
>
> > > > bud this work only 1 times! when I make page refresh, then the
>
> > > > categories
>
> > > > are
>
> > > > gone (only empty space - like nothig in code).
>
> > > >
>
> > > > Is here solution for me?
>
> > >
>
> > > The issue is with
>
> > > databaze.select("kategorie", order="cislo ASC")
>
> > >
>
> > > It returns an iterator, which is consumed after first use. Change that
> to
>
> > > the following to fix the issue.
>
> > > databaze.select("kategorie", order="cislo ASC").list()
>
> > >
>
> > > Anand
>
> >
>
> > Wow Anand, simple and easy solution :). Thank You very much for your help
>
> > and quick response :).
>
>
>
> I'm sorry for the late response, I was on a business trip. Solution with
> the addition .list() works, but if I initiate a change in the database, so
> nothing will change in the variable seznam_kategorii is still the same.
> What is the easiest way to update the variable every time the page loads?
>
Make that a function.
web.template.Template.globals['get_seznam_kategorii'] = lambda:
databaze.select("kategorie",
order="cislo ASC").list()
and use $get_seznam_kategorii() in the template.
Anand
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