Re: [Apc-aa-general] Linking back to parent items ...

[Krishna E. B. <keb@Cyblings.ON.CA>]

Here's some code i'm testing on my development box 
that does the stuff Mark mentioned:

it is an enhancement to f_f() in includes/item.php3 


  # prints link to fulltext view of item as a url.  typical use: headline url.
  # col: hl_href.........
  # param: link_only:redirect
  #   link_only - id of field (like "link_only.......") specifying whether fulltext view is offsite.
  #   redirect - url of another page which shows the content of item;
  #            - this page should contain SSI include ../slice.php3 too;
  #            - if given as "[target_field....]" fulltext will be viewed in editor-chosen Target Template,
  #              and slice id will be added to url.
  function f_f($col, $param="") { 
    $p = explode(":",$param);
    if( $p[0] AND $this->columns[$p[0]][0][value] ) {   
      # link_only contains a field id.
      # the dereferenced field says yes, hl_href field contains an external url.
      return $this->columns[$col][0][value]; 
    }
    if( $p[1] ) {  # redirect to another page.
      $need_slice = false;
      $tmp = trim($p[1]);
      if (ereg("^\[([a-z0-9_.]{16})\]$", $tmp, $regs)) {  # a field id enclosed in [].
        $need_slice = true;
        $p[1] = $this->columns[$regs[1]][0][value] . ".shtml";
echo "field=[$tmp], target=[" . $p[1] . "]\n";
      }
      //return con_url( $p[1], "sh_itm=".unpack_id($this->columns["id.............."][0][value]));
      return con_url( $p[1], 
        ($need_slice ? "slice_id=" . unpack_id($this->columns["slice_id........"][0][value]) . "&" : "") .
        "sh_itm=" . unpack_id($this->columns["id.............."][0][value]));
     } else {
      return con_url( $this->clean_url,          # show on same page as index view.
        "sh_itm=".unpack_id($this->columns["id.............."][0][value]));
     }
  }    


to use it, the person with administrator permissions has to set the
second parameter to a field id in square brackets [].
also, they create another field 
that contains the destination shtml template name.
i did that field as a dropdown constant list so that
adminsitrators could make it easy for editors to choose a valid template. 
however, if the administrator puts a normal value in the second
parameter, it overrides whatever selection the editor might make.

i chose that approach instead of a third parameter because the
first two parameters are separated with a : which can be part
of a url and would confuse the explode parameter parsing function.
maybe better to change the separator to a , but that would break
existing installations...

i'll set it up on a server so yall can see it, if you think it's worthwhile

-Krishna

Mark wrote:
> What we are now imagining is an even smarter version of this alias which
> would combine you go.php3 function with a number of other functions. In
> addition to switching between internal and external, we would like to make
> this function do the following:
> 
> - choose whether the headline URL is internal or external
> - insert an .shtml template name into internal URLs (for different full text
> templates)
> - choose whether to go back to the parent slice / item for internal URLs
> 
> Does this make sense to you? Would it be a good thing for us to work on? Or
> would it be better for you to work on it?
> 
> Thanks again for your help ...
> 
> - Mark
> 
> 
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> 


-- 
Krishna E. Bera  <ke...@cy...>