Code Question

Question

I am trying to create a variable that will show the string value of an Array object deliminated with a comma. In short, I have created an ArrayCollection from FeatureSet.Attributes, modified it as in the code below (from Dan yesterday), and then applied a 'for each' statement to create the string values. All well and good, but the values that are returned are not delimited (I need a comma separating the values so that I can use it as a variable in a script). I created an Array composed of the string output (myString in code), and I applied the conventional methods to return comma separated values (params.toString(); and then params.join(","), but the results are the same: I get the values of the Array strung together without a delimiter. function onRbeResult(featureSet:FeatureSet, token:Object = null):void        
      {
       try
       {
        for each (var gra:Graphic in featureSet.features)                    
        {   
        var obj:Object = gra.attributes;
        obj["gid"] = gid;
        gid +=1;
        }
        gridDataProvider = featureSet.attributes;
        LLdata.dataProvider = gridDataProvider;
        var recAC:ArrayCollection = createRbeRecordData(featureSet,rbeID);
        wRepeater.dataProvider = recAC;

var stopAC:ArrayCollection = new ArrayCollection;
        var newObj:Object;
        var j:int=0;
        for(j=0;j<featureSet.attributes.length; j++)
        {
         newObj = featureSet.attributes;
         delete newObj.NAME;
         delete newObj.POLICY;
         stopAC.addItem(newObj);
        }

for each( var obj:Object in stopAC )
        {
         for each( var obj2:Object in obj )
         {
         myString += String( obj2 );
         }
        }

trace(myString);
        var params:Array = new Array(myString);
//        var paramsCSV:String = params.toString();//didn't work
        var paramsCSV:String = params.join(",");//didn't work either
        Alert.show(paramsCSV);
        trace(paramsCSV);

The result of the trace is always as follows (the results change dynamically, but no change in format): null0642473168584021869369384069146424735691143668584076662168642473

What I am looking for is e.g.642473,685840,1869369,etc.

Perhaps the null value is creating a problem, or the code is wrong. Any help or pointers will be greatly appreciated, as always.

Jim Faron

azgis · Answer

Dasa,

That was it! Thanks again for your help!

Jim Faron

DasaPaddock · Answer

Here's how I would do this. You could use featureSet.attributes, but I think looping through the features makes the code clearer.
var ids:Array = [];
for each (var graphic:Graphic in featureSet.features)
{
    ids.push(graphic.attributes["Stop_ID"]);
}
var paramsCSV:String = ids.join();

azgis · Answer

Yes, you are correct. The featureset.Attributes has three fields: Name, Policy, and Stop_id. I only want the Stop_id in the comma separated list variable. I intend to use that variable to send to a Webservice in a script. I can make the Webservice and script work by using the selectedItem of a list (I define the labelField=Stop_ID). I want to send multiple values, in fact all of the values each time the function is run. If there is another way to do this, I would love to know. For example, if there is a better way to get the text value of the one field (Stop_ID) that is contained in featureSet.attributes, that would be fantastic. I would rather not, if I don't have to, limit featureSet.Attributes to one field only in the function (the fields are defined in the config.xml), as that would affect its use as a dataProvider for a grid.