Comments on: Access the Query-String Variables from Flex Application

By: Cristobal Dabed

Cristobal Dabed — Wed, 15 Oct 2008 14:32:44 +0000

One can use URLVariables Class and a simple regexp to parse the query params into an object.
var url:String = "http://example.com/?param1=test¶m2=sample"; var variables:URLVariables = new URLVariables(url.replace(/.+\?/, "")); for (var key:* in variables){ trace(key + "=" + variables[key]); }
Gives us the following output:
param1 = test param2 = sample
Or just access the query params directly trough the variables object if one knows the param name
var param1:String = variables["param1"];

By: ben orchard

ben orchard — Mon, 06 Oct 2008 20:35:52 +0000

hmm…everything looks good, but I simply cannot get this to import the bloody parameters…I’ve tried everything I can think of…and when I simply use the queries as you designate, the flash just can’t pick up my parameters–whether I pass them via an embedded html wrapped link OR directly to the swf. Both ways it refuses to see the information. Any suggestions?

By: Caspar

Caspar — Tue, 20 May 2008 00:49:00 +0000

private function combineParams():void { /* * Remove the duplicates from url because the params from * SWF Object has priority * Put the new associative array in the newParamsFromUrl */ var newParamsFromUrl:Object = new Object(); for (var tmpC1:* in _paramsFromUrl) { for (var tmpC2:* in _paramsFromSwfObject) { if(tmpC1 == tmpC2) { // do nothing - pass over to eliminate the duplicate } else { newParamsFromUrl[tmpC1] = _paramsFromUrl[tmpC1]; } } //added - if swf url was not defined, no url parameters were defined if ( tmpC2 == undefined ) { newParamsFromUrl[tmpC1] = _paramsFromUrl[tmpC1]; } } … … }

By: Caspar

Caspar — Tue, 20 May 2008 00:48:04 +0000

Hi Andrei,

Thanks for this - you have created a lovely object.
Just one thing - I may have found a bug - either that or my implementation of the object is incorrect.
In the combineParams() function, I had to add a couple of extra lines to prevent the html params from being dropped. This happens if the swf params are “undefined” ie not present. Here’s what I added:
private function combineParams():void { /* * Remove the duplicates from url because the params from * SWF Object has priority * Put the new associative array in the newParamsFromUrl */ var newParamsFromUrl:Object = new Object(); for (var tmpC1:* in _paramsFromUrl) { for (var tmpC2:* in _paramsFromSwfObject) { if(tmpC1 == tmpC2) { // do nothing - pass over to eliminate the duplicate } else { newParamsFromUrl[tmpC1] = _paramsFromUrl[tmpC1]; } } //added - if swf url was not defined, no url parameters were defined if ( tmpC2 == undefined ) { newParamsFromUrl[tmpC1] = _paramsFromUrl[tmpC1]; } } … … }

By: Damon

Damon — Fri, 21 Mar 2008 18:08:50 +0000

Thanks Andrei for the solution, but I was unclear as to my goal…
I’m trying to achieve:
var arr:Array = new Array( { uniqueid:"01", mm_name:"cat.jpg", mm_path:"img/req1", mm_keywords:"cat, black cat" }, { uniqueid:"02", mm_name:"dog.jpg", mm_path:"img/req2", mm_keywords:"dog, brown dog" }, { uniqueid:"03", mm_name:"elephant.jpg", mm_path:"img/req36", mm_keywords:"elephant, large elephant" } ); arr.forEach(traceContinent); function traceContinent(element:*, index:int, arr:Array):void { trace(element.mm_path + "/" + element.mm_name + "keywords=" + element.mm_keywords); }

By: Andrei Ionescu

Andrei Ionescu — Thu, 20 Mar 2008 00:52:06 +0000

First of all, the string you provided is not a well formed URL so putting it in the browser URL may provide unexpected behaviour, second the following function is in response to what I manage to understand from your comment/request and third is more related to parsing than query strings as you could use other URL formating to get rid of all code I had to write.
public function parseYourWay(str:String):Array { // remove un-needed array(0)0 thing var removeArray:RegExp = /\&?array\(\d+\)\d+/g; // find pairs var findPairs:RegExp = /([^,]+)=([^,]+)/g; // here pairs will be stored var pairs:Array = new Array(); // here the whole string parsed will be as array // structure: // foundValue[] = [,,...] // example (this is what the function returns): // foundValue['mm_keywords'] = ["keyword1","map satellite","robot black and white"]; // foundValue['mm_name'] = ["bluehills.jpg","satelllite_map.jpg","robot.jpg"]; // foundValue['mm_path'] = ["img/req1","img/req2","img/req2"]; var foundValue:Array = new Array();
var tmpStr:String = str.replace(removeArray,""); // finding pairs pairs = tmpStr.match(findPairs); for (var i:int = 0; i < pairs.length; i++) { // reseting index for exec command findPairs.lastIndex = 0; // finding name and values in pairs var tmpF:Array = findPairs.exec(pairs[i]); // new array only if not exists otherwise will be overwritten if (!foundValue[tmpF[1]]) foundValue[tmpF[1]] = new Array(); // adding value found foundValue[tmpF[1]].push(tmpF[2]); } return foundValue; }

The function can be used as bellow:
var tmp:Array = parseYourWay("array(0)1,mm_name=bluehills.jpg,mm_path=img/req1,mm_keywords=keyword1&arra....");

By: damon

damon — Wed, 19 Mar 2008 18:40:39 +0000

this is very helpful, but I’m trying to parse a string that is being returned from an ASP script…looks like
array(0)1,mm_name=bluehills.jpg,mm_path=img/req1,mm_keywords=keyword1&array(1)2,mm_name=satellite_map.jpg,mm_path=img/req2,mm_keywords=map satellite&array(2)3,mm_name=robot.jpg,mm_path=img/req2,mm_keywords=robot black and white&
my biggest problem is parsing the values into an array. I’d like to create associative arrays that would hold individual values…

first array holds = mm_name=robot.jpg, mm_name=robot2.jpg,…

second array holds = mm_desc=Robot, mm_desc=Robot2,…
any suggestions are appreciated.