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Problem assigning data to an itemRenderer component

Posted on 2009-04-24
Medium Priority
Last Modified: 2012-05-06
I actually asked this question before, and I was given the recommendation to look at http://livedocs.adobe.com/flex/3/langref/mx/core/ClassFactory.html. I have a datagrid that has a column defined this way:

<mx:DataGridColumn id="dgc" headerText="Gender" itemRenderer="itemrenderers.ComboBoxRenderer" editable="false"/>

The code of itemrenderers.ComboboxRenderer is simply this:

<?xml version="1.0" encoding="utf-8"?>
<mx:ComboBox xmlns:mx="http://www.adobe.com/2006/mxml"
                  import mx.collections.ArrayCollection;
                  public var dp:ArrayCollection;

My objective is to pass the following mx:Model to itemrenderers.ComboBoxRenderer to serve as its dataProvider:

<mx:Model id="modelGender">
            <sex index="M" text="Male"/>
            <sex index="F" text="Female"/>

Now following the instructions which http://livedocs.adobe.com/flex/3/langref/mx/core/ClassFactory.html leads to, I have a function called setupDataGrid() which is called upon my datagrid's (whose id is "dg1") creationComplete event:

            private function setupDataGrid():void
                  var myComboBoxRenderer:ClassFactory = new ClassFactory(itemrenderers.ComboBoxRenderer);
                  myComboBoxRenderer.properties = { dp: modelGender.sex};
                  dg1.itemRenderer = myComboBoxRenderer;


But when I run it, I get this error:

"TypeError: Error #1034: Type Coercion failed: cannot convert []@158b7d99 to mx.collections.ArrayCollection.
      at mx.core::ClassFactory/newInstance()[C:\autobuild\3.2.0\frameworks\projects\framework\src\mx\core\ClassFactory.as:153]
      at mx.controls.dataGridClasses::DataGridColumn/http://www.adobe.com/2006/flex/mx/internal::getMeasuringRenderer()[C:\autobuild\3.2.0\frameworks\projects\framework\src\mx\controls\dataGridClasses\DataGridColumn.as:1557]
      at mx.controls::DataGrid/commitProperties()[C:\autobuild\3.2.0\frameworks\projects\framework\src\mx\controls\DataGrid.as:1605]
      at mx.core::UIComponent/validateProperties()[C:\autobuild\3.2.0\frameworks\projects\framework\src\mx\core\UIComponent.as:5807]
      at mx.managers::LayoutManager/validateProperties()[C:\autobuild\3.2.0\frameworks\projects\framework\src\mx\managers\LayoutManager.as:539]
      at mx.managers::LayoutManager/doPhasedInstantiation()[C:\autobuild\3.2.0\frameworks\projects\framework\src\mx\managers\LayoutManager.as:689]
      at Function/http://adobe.com/AS3/2006/builtin::apply()
      at mx.core::UIComponent/callLaterDispatcher2()[C:\autobuild\3.2.0\frameworks\projects\framework\src\mx\core\UIComponent.as:8628]
      at mx.core::UIComponent/callLaterDispatcher()[C:\autobuild\3.2.0\frameworks\projects\framework\src\mx\core\UIComponent.as:8568]"

It is erroring out during the assignment of modelGender.sex (an ArrayCollection object) to the 'dp' property of my itemrenderers.ComboBoxRenderer, and I'm at a loss now. :(

Can anyone see what I'm doing wrong? Thanks.
Question by:elepil
  • 2
LVL 37

Accepted Solution

zzynx earned 2000 total points
ID: 24270834
>> It is erroring out during the assignment of modelGender.sex (an ArrayCollection object)
Are you sure that modelGender.sex is an ArrayCollection?

The error says: "... cannot convert []".
Looks like modelGender.sex is more like an Array instead of an ArrayCollection

Could you try changing

        myComboBoxRenderer.properties = { dp: modelGender.sex};


        myComboBoxRenderer.properties = { dp: new ArrayCollection(modelGender.sex) };

Author Closing Comment

ID: 31574394
Thank you for responding when nobody did, I really appreciate it. :)
LVL 37

Expert Comment

ID: 24278122
You're welcome
Thanx 4 axxepting

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