Passing Parameter to Flex Viewer

Mark,

Do you have anything calling the mapLoadComplete function?

Yes I put it where Nathan said, and it gets through the mapLoadComplete function but never runs the query it just sits there and spins the clock. I put the break points in the query function but it never gets to them. As I step through the mapLoadComplete it looks like it should be running the query but it doesn't seem to be.

Mark,

I am not sure where you are going wrong. Maybe you should post some of your code.

Here is my MapManager.mxml. I have not modified anything in the search widget, and it runs the query if I put the mapLoadComplete function contents in the layerLoadComplete function so I would think that it has to be something in this mxml

MapManager.zip

While stepping through the code, set up the way that previous posts state I would say the queryFromURL is being called prior to the Search Widget loading. The mapLoadComplete is called right after the maps load up not the widgets. Would anyone have any ideas why this would be happening this way.

Mark,

Do you have the SearchWidget Preloaded? If not then that is an issue.

Yes it is preloaded. The problem is when the application is loading up it will call the map load complete function before the widget is actually showing on the application. The search widget, navigation, and headercontroller widgets all load after the mapLoadComplete function is called. The layerLoadComplete function is called everytime something is added to the map, so it will work in this, but that means that the query is called everytime another widget is turned on, so it keeps zooming back to the searched url.

This is very odd, when I came in friday it ran the code fine to find the parcel on the first debug run, and it did the same thing today. Every other time I run the code it finds nothing. Is this something that anyone has seen. Also I exported a release build and it just sits and spins the clock.

NathanEnge

I'm experiencing the same issue, but only on certain browsers and OS. On my development machine as well as any other machine that is running XP and IE 8, it works fine. but I find that with anybody running vista and IE9, they need to turn on compatibility load, then hit the refresh button. I also find that it will work in firefox but will bail with chrome.

ScottSnider

Any help with this anyone?

Another rookie question about this topic!

I've made the changes to MapManager as mentioned and I can successfully search with what appears to be the bounding coordinates as given with an example with the code change. I don't know if I missed this somewhere, but what changes would I need to make to be able to search on an X,Y instead of bounding coords?

The application is for a utility billing software we use, we push centroids of the parcel with x,y to the database for the utility billing. We have then added a button that will pass a query string to pull up a web map of the location. Alternatively we could use the other examples of passing a parcel ID, but if there are parcel changes (we do not maintain the parcels) then we would not get a result. By passing x,y we are guaranteeing that the map will at least zoom to where the parcel used to be.

Thanks,
Scott

I knew that it was something with how long it takes the Flexviewer 2.3 to load all the elements on the screen, and when it is trying to run the query the search widget had not been loaded by this time. I changed the line:
timer = new Timer(8000, 1);
to
timer = new Timer(12000, 1);
in the mapLoadComplete function and now the query is ran every time. Now it does not run the utimerComplete function until the search widget is actually visible on the screen. Thanks for everyones help on this issue.
Mark Yerington

JustinCarasick

sorry to jump in but have a slight issue. all the above works great. able to use the querytask in the maploadcomplete event and everything works great. THANK YOU.

But I have a little bug I think. On top of querying a feature and zooming to the feature (which works), I want to turn off my imagery layer and turn on all my others.

         
var layers:ArrayCollection = map.layers as ArrayCollection;
for each (var layer:Layer in layers)
{
          
    if    (layer.name.toLowerCase() == "imagery")
    {
             layer.visible = false;
    }
    else
    {
 layer.visible = true;
    }
}

the problem is that some layers draw and scale correctly but some layers seem to freeze at a particular scale and not refresh.

so if I use this code when I zoom in some layers don't refresh and stay at the previous zoom scale and cause obvious alignment/display issues. once this happens, if I use the TOC widget and turn the layer on and off again everything works correctly again.

any ideas?

i attached some screen graps. the 1st image shows when you first zoom in using the querytask code in this thread. the second image is when I zoom out after that. you will see some of the layers won't refresh and the scale gets out of wack. if i toggle the layer(s) not drawing correctly (or not refreshing) they will draw properly again.

thanks,
Justin

zoom_image_1.JPG

zoom_image_2.JPG

Justin,

I think it is going to have something to do with your zoom code and timing issues. Post the code that you are using in the MapLoadComplete.

JustinCarasick

Justin,

I think it is going to have something to do with your zoom code and timing issues. Post the code that you are using in the MapLoadComplete.

Think your right. I read a couple of other posts in more detail and moved the code (the exact same code) into the layerloadComplete event and it now works. Here is the code snippet.

    if (ExternalInterface.available)
    {
     var result:URLVariables = new URLVariables();
     var urlSubstring:String = ExternalInterface.call("window.location.search.substring", 1);
     
     if (urlSubstring && urlSubstring.length > 0 != "debug=true")
     {
      result.decode(urlSubstring);
     
      // Parse URL
      var qValue:String
      if  (result["excavationpermit"])
      {
       qValue = result["excavationpermit"]; 
       
       var queryTask:QueryTask = new QueryTask();
       var query:Query = new Query();
       query.returnGeometry = true;
       query.where = "order_no = '" + qValue + "'";
       queryTask.url = "http://df21pce00255325/ArcGIS/rest/services/Common_Utilities/FeatureServer/0";
       queryTask.execute(query, new AsyncResponder(onResult, onFault));
       
       function onResult(featureSet:FeatureSet, token:Object = null):void 
       {
        if (featureSet.features.length == 0) 
        {
         Alert.show("Excavation Permit Not Found. Please Try Again.");
        }
        else 
        {
         //uninon the sel graphic extents and zoom
         var unionExtent:Extent;
         var myFirstGraphic:Graphic = featureSet.features[0];
         unionExtent = Polygon(myFirstGraphic.geometry).extent;
         for each (var myGraphic1:Graphic in featureSet.features)
         {
          
          unionExtent = unionExtent.union(Polygon(myGraphic1.geometry).extent);
         }
         map.extent = unionExtent; // Zoom to queried polygon
         map.scale = 250;
         
         // make sure the whole extent is visible
         if (!map.extent.contains(unionExtent))
         {
          map.level--;
         }
         
         //turn on required layers
         var layers:ArrayCollection = map.layers as ArrayCollection;
         for each (var layer:Layer in layers)
         {
          if (layer.name.toLowerCase() == "imagery")
          {
           layer.visible = false;
          }
          else
          {
           layer.visible = true;
          }
         }
         
         
        }
       }
       function onFault(info:Object, token:Object = null):void {
        Alert.show("Excavation Permit Not Found. Please Try Again.");
       }
        }
        }
    }

Justin,

Glad to hear you have it working.

JustinCarasick

Justin,

Glad to hear you have it working.

Yes, appreciate you responding.

JeffHarmon

So, once you get the paramters passed and your feature selected is there an easy way to turn off the overlay?

Hi Marc,

I wondered if you figured out how to avoid the query method defaulting to use the LIKE syntax?
I have incorporated the code to allow the parameters to be passed ok, but instead of using the line:

...
query.text = vValue;
...

i would like to search on a EQUALS expression so that when the last part of the URL is entered it searches this value exactly.

If possible can you provide any help please?

I imagine it something like query.where = expr
But im not sure on how to go about this.

All the best,

Caroline

MarcWeinshenker1

Hi Caroline,

Sorry, but changing the query parameters wasn't something I ever pursued, and I don't have a solution other than pursuing the suggestion I made originally.

Marc

Marc - thanks a lot for your quick response. I will try thinking about this more and see if I can get it working.

Thanks again,

Caroline

Caroline,

You will probably want to take a look at the Enhanced Search Widget as it allows for URL searches to be performed based on any SQL criteria defined in the SearchWidget.xml.

http://www.arcgis.com/home/item.html?id=5d4995ccdb99429185dfd8d8fb2a513e

thanks Robert - i tried compiling this but as Im using viewer src 2.3.1 i have acouple of errors. is your eSearch only working at 2.4 onwards?
Sorry to ask if this is already noted somewhere!
thanks again,
caroline

Caroline,

The source code is written for Flex Viewer 2.4 and higher only but to down grade the code would only involve changing a few lines:

AppEvent.addListener(AppEvent.DATA_PUBLISH, sharedDataUpdated);

needs to be:

ViewerContainer.addEventListener(AppEvent.DATA_PUBLISH, sharedDataUpdated);

In both the SearchWidget.mxml and the SearchWidgetFixedDG.mxml

I think that is it, but don't quote me on that.

Hi Robert - and thanks a million for the code change info. This removed the error. One more (hopefully small) thing if you have a second...the com.esri.ags.skins.supportClasses.PopUpText; is not included in a 2.3.1 project. Sorry to ask but do you know how to get this into my project? I have downloaded the 2.4 src but having trouble trying to copy as this does not seem to be permitted.

Thanks in advance!

Caroline

Caroline,

Try commenting out this line:

popUpRenderer.setStyle("skinClass", widgets.eSearch.PopUpRendererSkin);

In the showHighlight function.

thanks so very much. problem solved! 🙂

Caroline

NathanEnge

Hey there, having a bit of an issue. It seems like the query works:
http://www.mapservices.ca/aditya/index.html?q=Westbank/Westbank!7&v=MAPIT.548.2

however, the selection zoom and selected graphics are placed in the wrong place in the world.
The REST url for Mapservice number 7 is here:
http://www.mapservices.ca/ArcGIS/rest/services/Westbank/Westbank/MapServer/7

If you go to just the application itself you will see that it is nowhere near the 1 degree parallels.

Whats happening here?