[dancer-users] Template Toolkit Sort Hash

[Niels Larsen]

Kadir,

This will keep hash order,

http://search.cpan.org/~chorny/Tie-IxHash-1.23/lib/Tie/IxHash.pm

I only use it when I have to, but there is not too much of a 
slowdown, and I would guess your hashes are small anyway.
I don't use Dancer myself, but follow its progress. 

Niels L



On Sun, 2015-09-27 at 15:30 +0300, Kadir Beyazlı wrote:
> Hi WK,
> 
> On Sun, Sep 27, 2015 at 3:13 PM, WK <wanradt at gmail.com> wrote:
> > 2015-09-27 14:48 GMT+03:00 Kadir Beyazlı <kadirbeyazli at gmail.com>:
> >
> >>> Of course, I can't be sure until I know what your data structure really looks like,
> >> [KB] The data Richard mentioned is a classic fetchall_hashref data as below:
> >>
> >> $Pats = {ID => { SNAME => Value,
> >>                          CHNAME => Value,
> >>                          ANAME => Value,
> >>                      },
> >>             ID => { SNAME => Value,
> >>                          CHNAME => Value,
> >>                          ANAME => Value,
> >>                      },
> >>            ID => { SNAME => Value,
> >>                          CHNAME => Value,
> >>                          ANAME => Value,
> >>                      }
> >>             }
> >
> > When we need those elements be in particular order, sorted by any
> > deeper value in hash tree, there is two main solutions for this goal.
> >
> > First (and best for me). As hash can't maintain an order of elements,
> > you provide different data structure in right order, namely arrayref,
> > something like:
> [KB] I always use array ref if I need to order a database data because
> hash is unordered as you wrote and sort function sorts by key not by
> vaue (At perl code, it also sorts by value) at template toolkit. I
> tried to explain data structure Richard has trouble to Dave because
> Dave wrote a solution
> 
> Richard,
> 
> I offer you using arrayref at template toolkit too. Template toolkit
> supplies reaching values by table column names unlike perl code (t
> Perl code, we ave to use index to reach array data) which is very
> useful
> >  $Pats = [ { 123 => { SNAME => Value,
> >                           CHNAME => Value,
> >                           ANAME => Value,
> >                       } },
> >              { 124 => { SNAME => Value,
> >                           CHNAME => Value,
> >                           ANAME => Value,
> >                       } },
> >             { 125 => { SNAME => Value,
> >                           CHNAME => Value,
> >                           ANAME => Value,
> >                       }
> >              } ];
> >
> > Other variant is to use some helper in your templating system, which
> > provides map/reduce (Schwarzian transform) functionality. So you can
> > feed in your hash and it gives back id-s in specified order.
> >
> > Hope it helps.
> >
> > Wbr,
> > --
> > Kõike hääd,
> >
> > G
> > _______________________________________________
> > dancer-users mailing list
> > dancer-users at dancer.pm
> > http://lists.preshweb.co.uk/mailman/listinfo/dancer-users
> 
> 
>