[dancer-users] Template Toolkit Sort Hash

[Kadir Beyazlı]

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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-- 
Kadir Beyazlı
Computer Engineer
GSM : +90 535 821 50 00