RE: [flexcoders] Working With Dynamic Datagrid

[Tracy Spratt]

I don't see where you are you assigning the dataProvider.  Either assign the
data to a bindable var  in the result handler, of assign the dataProvider
directly.  If assigning directly, you might need to use callLater()

 

Tracy Spratt,

Lariat Services, development services available

  _____  

From: flexcoders@yahoogroups.com [mailto:flexcod...@yahoogroups.com] On
Behalf Of blkmajk111
Sent: Thursday, April 23, 2009 9:06 AM
To: flexcoders@yahoogroups.com
Subject: [flexcoders] Working With Dynamic Datagrid

 






Hey All,

I'm having an issue that I was hoping someone can help me out with.

I need to populate a datagrid based on XML being returned to Flex. The
structure of the XML is as follows: 

"<root>
<lab id="2" title="Chemical Materials">
<assignment assignmentid="2" name="s2 s2" grade="B"/>
<assignment assignmentid="4" name="s1 s1" grade="C"/>
<assignment assignmentid="6" name="John Smith" grade="B"/>
</lab>
<lab id="8" title="BioChem">
<assignment assignmentid="3" name="s2 s2" grade="F"/>
<assignment assignmentid="5" name="John Smith" grade="D"/>
</lab>
</root>"

When this XML gets returned to Flex I need to throw it into a Datagrid for
diaplay. The catch is there can be any number of columns in the datagrid
becasue the assignments can be of different quantities.

Here is the code that I am using to make the grid:

"private function getGradebookSectionDb(event:ResultEvent):void{
var gradebookBySection:XMLList = event.result.lab;

var cols:Array=new Array;

for (var i:int=0;i<gradebookBySection.length();i++){
var col:DataGridColumn=new DataGridColumn();
col.headertext=gradebookbysection[...@title.toxmlstring();
col.dataField=gradebookBySection[i].children()....@grade.toxmlstring();
cols.push(col);
gradebookDatagrid.columns=cols;
gradebookDatagrid.visible=true; 
}"

When I do this, the columns get created from the XML very nicely with the
headers displaying correctly but there is no data showing up in the columns.
I would like to get one of the attribute values in each column but for some
reason nothing comes up. When I do a trace on the "col.datafield" I get the
right information coming back in the trace but nothing shows up in the
column.

I would have just assigned the XML as a datapovider to the datagrid but as
the amount of assignments returned can change, I saw this as my only option.

Can anyone help me with this?

Thanks!