[dancer-users] Template Toolkit Sort Hash

[Kadir Beyazlı]

Hi Niels,

On Sun, Sep 27, 2015 at 3:37 PM, Niels Larsen <niels at genomics.dk> wrote:
> 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.
[KB] Thanks, the solution Dave offered works at template toolkit also.
> 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
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>> > dancer-users at dancer.pm
>> > http://lists.preshweb.co.uk/mailman/listinfo/dancer-users
>>
>>
>>
>
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-- 
Kadir Beyazlı
Computer Engineer
GSM : +90 535 821 50 00