Passing Parameter to Flex Viewer

Curt,

Here are four different threads that deal with your question. No sense re-inventing/re-writing the wheel.

http://forums.esri.com/Thread.asp?c=158&f=2421&t=294907&mc=104#msgid923901
http://forums.esri.com/thread.asp?c=158&f=2421&t=266031&mc=47
http://forums.arcgis.com/threads/6874-Pass-Search-Parameters-via-URL?highlight=url+search+parameter
http://forums.arcgis.com/threads/4018-SFV-1.3-Pass-URL-to-Search-parcels?highlight=url+search+parameter

I've been looking at this because I also want to be able to pass a parcel ID to open a map viewer to the associated parcel, but all the code in the previous discussions pertain to the SFV. How can this be applied to the v2.2 Flex Viewer?

Thanks,
Marc

SteveWhitehead__GISP

Hi Marc, I am looking to do the same thing. Did you have any luck with 2.2?

Hi Marc, I am looking to do the same thing. Did you have any luck with 2.2?

Steve,

I've been working on other things while waiting for any reply. Nothing yet. Today I'm trying to apply what appears to be the simplest solution, one posted by Rick Diaz for the 1.3 sample viewer in this thread: http://forums.esri.com/thread.asp?c=158&f=2421&t=266031&mc=47 It only requires modifying MapManager.mxml (I'm leaving out the progress bar for now).

The main challenge I'm having is looking at the compile errors to figure out what needs to be modified to catch up to the API changes. I really don't know what to expect in terms of functionality if and when I do get that all figured out. Plus, I'm no developer so I'm totally winging it here. If I get something work, I'll post it, but I'm still hoping a more skilled person will beat me to it.

Marc

JonFisher

Has anyone successfully been able to pass bounding coordinates to the 2.2 Flex Viewer in a URL? It looks like Jason never got it working in SFV 1.3 in http://forums.esri.com/thread.asp?c=158&f=2421&t=266031&mc=47#818760

I want to be able to have a URL to jump to each feature within my map. Since the size varies considerably from feature to feature, I think it will be easier to use bounding coordinates than center and scale (since I can easily calculate bounding coordinates using Field Calculator, and the map will jump to the nearest scale).

I have a vague memory that ESRI was considering enabling this for the 2.3 release, is that true?

Jon,

Sure here is the code to change in the MapManager.mxml

            //map load complete
            private function mapLoadComplete(event:MapEvent):void
            {
//My Add
    map.zoomSliderVisible = false;
    map.logoVisible = false;
    
    try
    {
     if (ExternalInterface.available)
     {
      var timer:Timer;
      var result:URLVariables = new URLVariables();
      var urlSubstring:String = ExternalInterface.call("window.location.search.substring", 1);    
      if (urlSubstring && urlSubstring.length > 0 && urlSubstring != "debug=true")
      {
       result.decode(urlSubstring);
       // Parse URL
       var xExt:String;
       var xUrlParam:String;
       if (result["EXT"])
        xExt = result.EXT;
       
       if (!xExt == ""){
        var extArray:Array = xExt.split(",");
        var extent:Extent = new Extent(Number(extArray[0]), Number(extArray[1]), Number(extArray[2]), Number(extArray[3]),map.spatialReference);
        map.extent = extent;
       }
      }
     }
    }
    catch (error:Error){}
//End My Add
            }

to use it just append something like: ?EXT=644988.5757,1173575.0875,645690.0041,1173863.1558 to the url.

JonFisher

Thanks Robert, that worked perfectly! I was also happy to see that something similar is natively supported with the ArcGIS.com web map:http://www.arcgis.com/home/webmap/viewer.html?url=http://maps.tnc.org/ecadpubprodanon/rest/services/conservation_projects_anon_WM/MapServer&extent=-79.215884634,-1.603660186,-76.503397545,0.769766016

It seems like several people have been interested in this topic so I'm going to update some other threads to point to your solution here.

Pass_PropertyID_in_URL_MapManager.txt.zip

Hi Marc, I am looking to do the same thing. Did you have any luck with 2.2?

Steve,

I've successfully modified the code to pass a parcel ID in the URL. The map opens and zooms to the parcel which has been overlaid by a graphic. I'm attaching a text file with explanations and code.

Marc

SteveWhitehead__GISP

Steve,

I've successfully modified the code to pass a parcel ID in the URL. The map opens and zooms to the parcel which has been overlaid by a graphic. I'm attaching a text file with explanations and code.

Marc

Thank you very much Marc. I will give it a go.

BrendanCunningham

Hi Marc,
That worked perfectly, thanks a lot.
The only further customization I need is to switch the query from a "like" search to an exact search.
Is this possible through the code or can you advise how to go about it via the MXD?
Thanks a lot,
brendan

Hi Marc,
That worked perfectly, thanks a lot.
The only further customization I need is to switch the query from a "like" search to an exact search.
Is this possible through the code or can you advise how to go about it via the MXD?
Thanks a lot,
brendan

Brendan,

There might be a couple of ways to get around the LIKE. One would be to use the WHERE property of the QUERY to create a SQL expression to validate the value parsed from the URL (see the QUERY class in the Flex API Reference). Another way would be to use coding prior to the submission of the query to validate the parsed value, e.g, for string length. Sorry I can't offer any specific examples since I'm not doing either of these.

I doubt there is any way to do it in the MXD since all the query is looking at is field values, and there probably isn't much chance that the values are so completely different from each other that all LIKE comparisons would fail.

Marc

Marc - Thank you for the code! I've tried modifying my MapManager.mxml and I keep getting the error "[RPC Fault faultString="Unexpected < encountered" faultcode="null" faultDetail="null"]

I've tried different services/layers to query with no luck. Any ideas? Any help would be much appreciated!

Steve,

I've successfully modified the code to pass a parcel ID in the URL. The map opens and zooms to the parcel which has been overlaid by a graphic. I'm attaching a text file with explanations and code.

Marc

Marc - Thank you for the code! I've tried modifying my MapManager.mxml and I keep getting the error "[RPC Fault faultString="Unexpected < encountered" faultcode="null" faultDetail="null"]

I've tried different services/layers to query with no luck. Any ideas? Any help would be much appreciated!

I'll take a guess that maybe you haven't modified the line for entering your own map service path to the REST endpoint or, if you did, maybe you left behind one or more of the angle brackets I used to indicate where you need to enter the portions of the service path. The brackets are not meant to be left behind, but just to indicate where a variable should be.

To be specific, here is the generic line to be edited:
var qFCPre:String = "http://<server>/<instance>/rest/services/<optional:subdirectory>";

and here is an example of what a real path might look like:
var qFCPre:String = "http://mygisserver/ArcGIS/rest/services/service_subdirectory";

You won't need the subdirectory if all your services are in the services directory.

Hope this helps.

Marc

Marc - I double checked the service and layer, and it's hitting the right one. Any other insight would be great!

Thanks,
Amber

Marc - I double checked the service and layer, and it's hitting the right one. Any other insight would be great!

Thanks,
Amber

Amber,

Three questions. Is the error coming up during compile or run time? Did you add the set of import statements I listed to the MapManager.mxml? And, from the error saying it came across an unexpected < , did you do a text search on MapManager.mxml to see if there is a stray angle bracket?

Marc

Marc -
1) Run Time
2) Yes, I added the import statements
3) Yes, I checked for that too

Thanks again!!

Amber,

Three questions. Is the error coming up during compile or run time? Did you add the set of import statements I listed to the MapManager.mxml? And, from the error saying it came across an unexpected < , did you do a text search on MapManager.mxml to see if there is a stray angle bracket?

Marc

Marc and Amber,

Marc, hope you don't mind I'm going to jump in and see if I can help.

Amber, can you post your code for the mapLoadComplete function that you are attempting to use?

AGO_Folder_Transfer_Ownership_issue.png

Marc and Amber,

Marc, hope you don't mind I'm going to jump in and see if I can help.

Amber, can you post your code for the mapLoadComplete function that you are attempting to use?

I'll gladly pass the baton....

Ah - Robert! Seeing your name jingled something loose in my head. My error may be larger than this code to pass parameters in the RUL. A few months ago I had downloaded and modified your SalesWidget (found here in this thread), and remembered I also received the exact same error. After a quick search for a solution, I just gave up.

Here's the code I'm using to modify the URL query string in the mapLoadComplete function in MapManager.mxml
Import declarations:
import com.esri.ags.FeatureSet;
import com.esri.ags.geometry.Polygon;
import com.esri.ags.layers.GraphicsLayer;
import com.esri.ags.tasks.QueryTask;
import com.esri.ags.tasks.supportClasses.Query;
import mx.rpc.AsyncResponder;

ViewerContainer.dispatchEvent(new AppEvent(AppEvent.LAYER_LOADED));
  var urlSubstring:String = ExternalInterface.call("window.location.search.substring", 1); 
     if (urlSubstring != ""){  // Parse URL
       var totalLength:Number = urlSubstring.length;
       var i:int = 0;
       var firstLetter:String = urlSubstring.charAt(i);
       var firstEqualsSignLocation:Number =  urlSubstring.indexOf('=');
       var firstStarLocation:Number =  urlSubstring.indexOf('*');
       var firstExclamtionLocation:Number = urlSubstring.indexOf('!');           
   
           if (firstLetter == "q"){  // Parcel Query
      
               var label:String = "Processing query...  please wait."
               var queryTask:QueryTask = new QueryTask();
               var qGlyr:GraphicsLayer = new GraphicsLayer();
               map.addLayer(qGlyr);
               var graphicLineSym:SimpleLineSymbol = new SimpleLineSymbol("solid", 0xFFFF00, 0.8, 2); // Yellow outline
               var graphicPolySym:SimpleFillSymbol = new SimpleFillSymbol("solid", 0xFF0000, 0.5, graphicLineSym); // Red fill
               var qValue:String = urlSubstring.substring( (firstEqualsSignLocation + 1),firstExclamtionLocation);
               var qValueLyr:String = urlSubstring.substring( (firstExclamtionLocation + 1),firstStarLocation); 
               var vValue:String = urlSubstring.substring( (firstStarLocation + 3),totalLength);
               var qFCPre:String = "<theservername>/arcgis/rest/services/";
               var qFCSuf:String = "/MapServer/";       
               var queryLayer:String = qFCPre + qValue + qFCSuf + qValueLyr;
               var query:Query = new Query();
               query.returnGeometry = true;
               query.text = vValue;
               queryTask.url = queryLayer;
               queryTask.execute(query, new AsyncResponder(onResult, onFault));
      
               function onResult(featureSet:FeatureSet, token:Object = null):void {
                  qGlyr.clear(); // clear the graphics layer
                  if (featureSet.features.length == 0) {
                    Alert.show("No Parcels matched. Please try again.");
                    }
                  else {
                    var unionExtent:Extent;
                    var myFirstGraphic:Graphic = featureSet.features[0];
                    unionExtent = Polygon(myFirstGraphic.geometry).extent;
                       for each (var myGraphic1:Graphic in featureSet.features){
                           myGraphic1.symbol = graphicPolySym;
                           qGlyr.add(myGraphic1);
                           unionExtent = unionExtent.union(Polygon(myGraphic1.geometry).extent);
                   }
        
               map.extent = unionExtent; // Zoom to queried polygon
               }
               }
               function onFault(info:Object, token:Object = null):void {
               Alert.show(info.toString());
               } 
               } 
               } // LCRA - URL Modification ends here

Anyway - again any insight is much appreciated!

Amber
Jackson Co, Missouri

Amber,

My first question is you did replace the "<theservername>" with your actual http://yourserver (i.e. http://gislap134) right?

var qFCPre:String = "<theservername>/arcgis/rest/services/";

var qFCPre:String = "<theservername>/arcgis/rest/services/";

Amber,

This is what I was trying to explain before. You don't want <theservername>. You want the actual name of the server without any angle brackets < >.

Marc

Ha! I'm a noob, but not that new! Yes, I replaced it 🙂

Amber,

Give me an example of what the url looks like that you are trying to pass in.

http://xyz.jacksongov.org/parcelviewer/index.cfm?q=ParcelsAndAddresses!6*v=69-710-15-07-00-0-00-000

Dang forum:

http://xyz.jacksongov.org/parcelviewer/index.cfm?q=ParcelsAndAddresses!6*v=69-710-15-07-00-0-00-000

Amber,

So you are using a ColdFusion front end to this website?...

Yes - I thought the same thing, but changing it back to .html doesn't work either.

Amber,

OK I am stumped on this one. I will put out a detailed document and code to be able to run the search widget or enhanced search widget from the URL like I did for the sample flex viewer, once I get back from the Developer Summit next week. Sorry I was not able to help. In the mean time if you want to continue to debug this than you need to get the Flash Player Debug Version from Adobe's website. Set a break point in the code and run the debug instead of play from flash builder.

Thanks a lot for everyone's help! I know it's something silly and I'll feel like a moron when I figure it out. Have fun at the Dev Summit!