Datagrid duplicate row

[freak182]

Hello Tracy,
Im experiencing same problem too, added that in my case the data in
first
row was repeated in next row when i insert data on database and load all
data in datagrid.(although the list is < 10)

I use remoteobject to save and get all the list of data. When i save the
data and get successful save, I simply call the ListEvent, in the result
handler, for dispatch and update the arraycollection of data.

Im using a renderer to format the display of date. here is the code
snippet
in datagrid column and renderer itself:

<mx:DataGridColumn headerText="Start Time">
<mx:itemRenderer>
<mx:Component>
<buscomp:DateTime startDate="{data.startTime}"/>
</mx:Component>
</mx:itemRenderer>
</mx:DataGridColumn>

...in the renderer..

<mx:HBox xmlns:mx="http://www.adobe.com/2006/mxml
<http://www.adobe.com/2006/mxml> "
creationComplete="formattingDate();" >
<mx:Script>
<![CDATA[
[Bindable]
public var startDate:Date;
[Bindable]
public var finalDate:String;


public function formattingDate():void
{
// create a utility that format the date& time to MM/DD/YY hh:mm:ss
this.finalDate = dateformat.format(startDate)+' '+startDate.getHours()
+':'+startDate.getMinutes();
}
]]>
</mx:Script>
<mx:DateFormatter id="dateformat" formatString="MMM-DD-YYYY"/>
<mx:Label text="{finalDate}" styleName="myText"/>
</mx:HBox>

...im just wondering why the data in first got duplicated in next row?
does
datagrid has some sort of cache? becuase from my previous code (e.g user
listng) the datagrid just work fine everytime i save and get the list of
data.the data i just save was reflected on the datagrid (no
duplication).

Thanks a lot.
Cheers.

[Tracy Spratt]

First, though I don't think it is a problem, you do not need the sub
tags on DGC for the renderer.  Just do:

<mx:DataGridColumn headerText="Start Time" itemRenderer="DateTime">

 

Now, there is a problem with the renderer.  It sets its value on
creationComplete.  This will not work since that only gets called once.
The Label.text needs to be updated when the "data" property is set.  And
it is actually more complicated than that to do it correctly.  I advise
you find a renderer that is close to what you want and modify it.

 

"...datagrid has some sort of cache..." no, but item renderers are
reused.  If they are not implemented corrrectly they will not display
what you expect.

 

I am not convinced that you really have duplicate data. Verify your
actual data by looping over the dataProvider and using trace to display
the items.

 

Tracy

 

________________________________

From: flexcoders@... [mailto:flexcoders@...] On
Behalf Of freak182
Sent: Tuesday, January 06, 2009 6:35 PM
To: flexcoders@...
Subject: [flexcoders] Datagrid duplicate row

 


Hello Tracy,
Im experiencing same problem too, added that in my case the data in
first
row was repeated in next row when i insert data on database and load all
data in datagrid.(although the list is < 10)

I use remoteobject to save and get all the list of data. When i save the
data and get successful save, I simply call the ListEvent, in the result
handler, for dispatch and update the arraycollection of data.

Im using a renderer to format the display of date. here is the code
snippet
in datagrid column and renderer itself:

<mx:DataGridColumn headerText="Start Time">
<mx:itemRenderer>
<mx:Component>
<buscomp:DateTime startDate="{data.startTime}"/>
</mx:Component>
</mx:itemRenderer>
</mx:DataGridColumn>

...in the renderer..

<mx:HBox xmlns:mx="http://www.adobe.com/2006/mxml
<http://www.adobe.com/2006/mxml>
<http://www.adobe.com/2006/mxml <http://www.adobe.com/2006/mxml> > "
creationComplete="formattingDate();" >
<mx:Script>
<![CDATA[
[Bindable]
public var startDate:Date;
[Bindable]
public var finalDate:String;

public function formattingDate():void
{
// create a utility that format the date& time to MM/DD/YY hh:mm:ss
this.finalDate = dateformat.format(startDate)+' '+startDate.getHours()
+':'+startDate.getMinutes();
}
]]>
</mx:Script>
<mx:DateFormatter id="dateformat" formatString="MMM-DD-YYYY"/>
<mx:Label text="{finalDate}" styleName="myText"/>
</mx:HBox>

...im just wondering why the data in first got duplicated in next row?
does
datagrid has some sort of cache? becuase from my previous code (e.g user
listng) the datagrid just work fine everytime i save and get the list of
data.the data i just save was reflected on the datagrid (no
duplication).

Thanks a lot.
Cheers.

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