The code below (from your example) looks strange.
var validatorFn:Function = Filters.getFilter(options[i]);
validators[validatorFn] = validatorFn;
If validatorFn is a Function, you need a Dictionary to make it work.
Otherwise the toString() value of validatorFn is used on the left hand
side, which is something like [Function] for every function.
Cheers
Ralf.
On Mon, Apr 21, 2008 at 11:10 PM, ivo <[EMAIL PROTECTED]> wrote:
>
>
>
>
>
>
> Hello all,
>
> I'd like to understand why if I create a filterFunction for a collection
> out of an array of Functions the filtering fails, but if I use an Object to
> hold them then everything is ok.
>
> ex:
>
> /*
> below would fail with "TypeError: Error#1006: value is not a function" as
> soon as the for loop in the filter function is hit
> */
> var validators:Array = [];
> var options:IList = //...contains property => values
> for(var i:int=0; i<options.length();i++){
> var validatorFn:Function = Filters.getFilter(options[i]);
> validators.push(validatorFn);
> }
>
> var filter:Function = function(item:Object):Boolean{
> var total:int = validators.length();
> for(var j:int=0; j<total; j++){
> var fn:Function = validators[j];
> if(! fn(item)){
> return false;
> }
> }
> return true;
> }
>
> var set:ArrayCollection = new ArrayCollection(/* bunch of items*/);
> set.filterFunction = filter;
>
> /*
> below works
> */
> var validators:Object = {};
> var options:IList = //...contains property => values
> for(var i:int=0; i<options.length();i++){
> var validatorFn:Function = Filters.getFilter(options[i]);
> validators[validatorFn] = validatorFn;
> }
>
> var filter:Function = function(item:Object):Boolean{
> for(var key:String in validators){
> var fn:Function = validators[key] as Function;
> if(! fn(item)){
> return false;
> }
> }
> return true;
> }
>
> var set:ArrayCollection = new ArrayCollection([/* bunch of items*/]);
> set.filterFunction = filter;
>
> (hope theres no typos, I am writing it as I remember)
> - Ivo
>
>
--
Ralf Bokelberg <[EMAIL PROTECTED]>
Flex & Flash Consultant based in Cologne/Germany
