topic Re: Pass Search Parameters via URL in ArcGIS API for Flex Questions

Pass Search Parameters via URL

SandraPanicucci — Wed, 23 Jun 2010 15:40:53 GMT

I've been trying to work my way through the http://forums.esri.com/Thread.asp?c=158&f=2421&t=294907&mc=104 thread but am still getting the following error. I've been through this thread numerous times and don't seem to be able to see my problem. I'm fairly new at Flex and would greatly appreciate any help or suggestions.

TypeError: Error #1009: Cannot access a property or method of a null object reference.
at com.esri.solutions.flexviewer.widgets::SearchWidget/querybmpid()
at com.esri.solutions.flexviewer:MapManager/private:mapLoadComplete/com.esri.solutions.flexviewer:timerComplete()
at flash.events::EventDispatcher/dispatchEventFunction()
at flash.events::EventDispatcher/dispatchEvent()
at flash.utils::Timer/tick()

Re: Pass Search Parameters via URL

RobertScheitlin__GISP — Thu, 24 Jun 2010 12:16:39 GMT

Sandra,

Can you attach your SearchWidget.mxml and the URL that you are using for this?

Re: Pass Search Parameters via URL

SandraPanicucci — Thu, 24 Jun 2010 12:37:21 GMT

URL of the website = http://arcgis.sd.gov/server/denr/bmpviewer/index.html?BMPID=10572
BMPID being the attribute I wish to search on. Hope you can make sense of this mess. Thanks for looking.

Re: Pass Search Parameters via URL

RobertScheitlin__GISP — Thu, 24 Jun 2010 12:48:18 GMT

Sandra,

I guess I will need you MapManger.mxml also. Line 587 in your SearchWidget.mxml that the error references is telling me that the querybmpid function is not receiving the query parameter (10572)

Re: Pass Search Parameters via URL

SandraPanicucci — Thu, 24 Jun 2010 12:55:12 GMT

Eventually I want the 10572 to be a number fed in from a different website but for now I'll be happy to get it to work with just that one. Unless what I hope to be able to do doesn't sound like it will work with the direction I'm heading here.

Re: Pass Search Parameters via URL

RobertScheitlin__GISP — Fri, 10 Dec 2021 21:40:49 GMT

Sandra,

Here is your code fixed.

Just replace the MapLoadComplete function in your MapManger.mxml with this one.

//map load complete
   private function mapLoadComplete(event:MapEvent):void
   {
    SiteContainer.dispatchEvent(new AppEvent(AppEvent.LAYER_LOADED, false, false, null));
    try
    {
     if (ExternalInterface.available)
     {
      var result:URLVariables = new URLVariables();
      var urlSubstring:String = ExternalInterface.call("window.location.search.substring", 1);    
      if (urlSubstring && urlSubstring.length > 0)
      {
       result.decode(urlSubstring);
       // Parse URL
       var xParam:String;
       var xExt:String;
       if (result["BMPID"])
        xParam = result.BMPID;
       if (result["EXT"])
        xExt = result.EXT;
       
       if (!xParam = ""){
        var timer:Timer = new Timer(4000, 1);
        timer.addEventListener(TimerEvent.TIMER_COMPLETE, timerComplete);
        timer.start();
       }
       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;
             }
       
       function timerComplete( event:TimerEvent ):void
       {
        timer.removeEventListener(TimerEvent.TIMER_COMPLETE, timerComplete);
        var id:Number = SiteContainer.getInstance().getWidgetId("Search");
        var bWidget:IBaseWidget = SiteContainer.getInstance().widgetManager.getWidget(id) as IBaseWidget;
        
        if (bWidget){
         var bWidg:BaseWidget = bWidget.getInstance();
         var vSW:SearchWidget = bWidg as SearchWidget;
         vSW.querybmpid(xParam);
        } else {
         var bWidget2:IBaseWidget;
         bWidget2 = SiteContainer.getInstance().widgetManager.getWidget(id) as IBaseWidget;
         var vSW2:SearchWidget = bWidget2 as SearchWidget;
         vSW2.querybmpid(xParam);
        }
       }
      }
     }
    }
    catch (error:Error){}
    refreshLayer("BMP Locations",30000);
    //uncomment if you are using my enhanced draw widget
    //map.addLayer(drawgLayer); 
   }

Re: Pass Search Parameters via URL

SandraPanicucci — Thu, 24 Jun 2010 13:38:37 GMT

Well it's a new error anyway.

Line 218 if (!xParam = ""){

produces this error when building

1050: Cannot assign to a non-reference value. MapManager.mxml FlexViewer/src/com/esri/solutions/flexviewer line 218 Flex Problem

Re: Pass Search Parameters via URL

RobertScheitlin__GISP — Thu, 24 Jun 2010 13:56:46 GMT

Sandra,

Sorry that was suppose to be
CODE]if (!xParam == ""){

Re: Pass Search Parameters via URL

SandraPanicucci — Thu, 24 Jun 2010 14:22:22 GMT

Looking much better! Thank you... It is going to the Search Widget but now I get the following errors.
***this in an error box on the site***

TypeError: Error #1009: Cannot access a property or method of a null object reference.
at com.esri.solutions.flexviewer:MapManager/refreshLayer/com.esri.solutions.flexviewer:timerHandler()
at flash.utils::Timer/_timerDispatch()
at flash.utils::Timer/tick()

***And this from the SearchWidget***

Error #1009: Cannot access a property or method of a null object reference.

Re: Pass Search Parameters via URL

RobertScheitlin__GISP — Thu, 24 Jun 2010 14:31:57 GMT

Sandra,

Ok this line is the culprit

refreshLayer("BMP Locations",30000);

so is "BMP Locations the exact map service id/Label that you have in your config.xml?

Re: Pass Search Parameters via URL

SandraPanicucci — Thu, 24 Jun 2010 15:45:47 GMT

This is the line from my config.XML --- "BMP Locations" is the layer name in the map which contains the BMPID attribute.

<mapservice label="BMP" type="dynamic" visible="true" alpha="1" icon="com/esri/solutions/flexviewer/assets/images/icons/i_flag.png">http://arcgis.sd.gov/ArcGIS/rest/services/BMP2/MapServer</mapservice>>

I tried changing this to simply "BMP" which is what it sounded like you were saying it should be...the map service id/Label... got rid of the mapmanager.mxml error that popped up on the site but still leaves me with
***Error #1009: Cannot access a property or method of a null object reference***
on the SearchWidget

I guess that means I'm one step closer. I believe my problem now lies in this ---

public function querybmpid(sParam:String):void
   {

    var i:Number = cboLayerText.selectedIndex;
    queryLayer = "http://arcgis.sd.gov/Arcgis/rest/services/BMP2/MapServer/0";
    queryExpr = "BMPID = '[value]'";
    queryFields = "BMPID";
    queryTitleField = "BMPID";

Section of the SearchWidget but many changes later I guess I still need help.

Re: Pass Search Parameters via URL

RobertScheitlin__GISP — Fri, 10 Dec 2021 21:40:52 GMT

Sandra,

Try this

public function querybmpid(sParam:String):void
   {
    
    var i:Number = cboLayerText.selectedIndex;
    queryLayer = "http://arcgis.sd.gov/Arcgis/rest/services/BMP2/MapServer/0";
    queryExpr = "BMPID = '[value]'";
    queryFields = "*";
    queryTitleField = "BMPID";
    queryLinkField = "";

Re: Pass Search Parameters via URL

SandraPanicucci — Thu, 24 Jun 2010 16:41:46 GMT

Thank You very very much! It worked.

Re: Pass Search Parameters via URL

NatashaManzuiga — Fri, 09 Jul 2010 12:34:34 GMT

Thank You very very much! It worked.

Sandra, can u send me your sitecontainer...there is something that doesnt work on mine..Im trying to do the same thing u did...

Thanks

Naty

Re: Pass Search Parameters via URL

SandraPanicucci — Fri, 09 Jul 2010 12:48:17 GMT

Natasha, I've attached my sitecontainer. Hope it helps, if not, hopefully Robert will respond. He's the best.

Re: Pass Search Parameters via URL

NatashaManzuiga — Fri, 09 Jul 2010 13:35:44 GMT

Natasha, I've attached my sitecontainer. Hope it helps, if not, hopefully Robert will respond. He's the best.

Oh....so fast!! :))))Thank u...

Naty

Re: Pass Search Parameters via URL

NatashaManzuiga — Fri, 09 Jul 2010 14:24:11 GMT

Natasha, I've attached my sitecontainer. Hope it helps, if not, hopefully Robert will respond. He's the best.

This is my code in mapmanager.mxml...in attachment the code and the error...

Re: Pass Search Parameters via URL

NatashaManzuiga — Fri, 09 Jul 2010 14:51:52 GMT

This is my code in mapmanager.mxml...in attachment the code and the error...

I see that I dont have this function getWidget(id) in widget manager 😞
SiteContainer.getInstance().widgetManager.getWidget(id)

Re: Pass Search Parameters via URL

RobertScheitlin__GISP — Fri, 10 Dec 2021 21:40:55 GMT

Natasha,

Yep you missed a couple of steps from the older thread.

//Add to the BaseWidget.as

  /**
   * Added by me
   * so that I could get the widget instance
   */
  public function getInstance():BaseWidget
  {
   return _Widget;  
  }

//Add to the IBaseWidget.as

  /**
   * Used to get a refference to this widget for code
   */
  function getInstance():BaseWidget;

//Add to the WidgetManagerDocked.mxml

      public function getWidget(id:Number):IBaseWidget
      {
       var widget:IBaseWidget;
       var label:String = configData.configWidgets[id].label;
       var icon:String = configData.configWidgets[id].icon;
       var config:String = configData.configWidgets[id].config;
       var url:String = configData.configWidgets[id].url;
       if (widgetTable.containsKey(id))
       {
        widget = widgetTable.find(id) as IBaseWidget;
        widget.setState("maximized");
        var wObj:DisplayObject = widget as DisplayObject;
        scrollToWidget(wObj);
       }
       else
       {
        //module loaded
        if (moduleTable.containsKey(url))
        {
         var modInfo:IModuleInfo = moduleTable.find(url) as IModuleInfo;
         widget = modInfo.factory.create() as IBaseWidget;
         widget.setId(id);
         widget.setTitle(label);
         widget.setIcon(icon);
         widget.setConfig(config);
         widget.setConfigData(configData);
         widget.setMap(map);
         var widgetDO:DisplayObject = widget as DisplayObject;
      widgetBox.addChild(widgetDO);
         widgetTable.add(id, widget);
        }
        else
        {
         return null;
         loadWidget(id, url);
        }
       }
       return widget;
      }

Re: Pass Search Parameters via URL

NatashaManzuiga — Fri, 10 Dec 2021 21:40:57 GMT

Natasha,

Yep you missed a couple of steps from the older thread.

//Add to the BaseWidget.as

  /**
   * Added by me
   * so that I could get the widget instance
   */
  public function getInstance():BaseWidget
  {
   return _Widget;  
  }

//Add to the IBaseWidget.as

  /**
   * Used to get a refference to this widget for code
   */
  function getInstance():BaseWidget;

//Add to the WidgetManagerDocked.mxml

      public function getWidget(id:Number):IBaseWidget
      {
       var widget:IBaseWidget;
       var label:String = configData.configWidgets[id].label;
       var icon:String = configData.configWidgets[id].icon;
       var config:String = configData.configWidgets[id].config;
       var url:String = configData.configWidgets[id].url;
       if (widgetTable.containsKey(id))
       {
        widget = widgetTable.find(id) as IBaseWidget;
        widget.setState("maximized");
        var wObj:DisplayObject = widget as DisplayObject;
        scrollToWidget(wObj);
       }
       else
       {
        //module loaded
        if (moduleTable.containsKey(url))
        {
         var modInfo:IModuleInfo = moduleTable.find(url) as IModuleInfo;
         widget = modInfo.factory.create() as IBaseWidget;
         widget.setId(id);
         widget.setTitle(label);
         widget.setIcon(icon);
         widget.setConfig(config);
         widget.setConfigData(configData);
         widget.setMap(map);
         var widgetDO:DisplayObject = widget as DisplayObject;
      widgetBox.addChild(widgetDO);
         widgetTable.add(id, widget);
        }
        else
        {
         return null;
         loadWidget(id, url);
        }
       }
       return widget;
      }

Thank u Robert, I will try with it...

Naty