[pmwiki-users] foxfilter

[noskule]

noskule schrieb:
> hi hans
>
> I'm building a foxfilter to handle categories. It works fine, except if 
> a user deletes all categories, respectively a empty categories field is 
> submitted.
>
> the if part of the code below works fine. However if I submit an empty 
> filed, "no-category" is written into the ptv. But if I change 
> "no-category" to "" then the filed don't get updated.
>
> What I have to do now to get the ptv cleard. Thanks for any hints.
> nos
>
>
>   
oky, I misspositioned ptvclear, is there a way to pass ptvclear also as 
hidden var?
(: input hidden ptvclear Categories:)

> $FoxFilterFunctions['FoxCategories'] = 'FoxCategoriesFilter';
> function FoxCategoriesFilter($pagename, $fields) {
>     $categories_string = $fields['ptv_Categories'];
>     $categories_string = 
> preg_replace("/^[^A-Za-z0-9]*/","",$categories_string);
>     $categories_string = 
> preg_replace("/[^A-Za-z0-9]*$/","",$categories_string);
>     $categories_string = 
> preg_replace("/[^A-Za-z0-9\s-]*/","",$categories_string);
>     if ( $categories_string != "" ) {
>         $categories_arr = explode(" ",$categories_string);
>         for($i=0;$i<count($categories_arr);$i++) {
>             $out = $out."[[!".$categories_arr[$i]."]] ";
>             }
>         }
>     else $out = "no-category";
>     $fields['ptv_Categories'] = $out;
>     return $fields;
>     }
>
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