Hi all,
I’m quite new in Yii topics so, plase, be patient with me 
I used the GroupGridView extension in my application and everything works fine but the merge of a column based on a CLinkColumn.
Do you know if there’s any way to merge it?
Thanks for your help!
Maybe you should post what you have tried till now and what results and/or errors you get.
Hi bennouna,
thanks for your reply! What I did is as follows:
<?php $this->widget('ext.groupgridview.GroupGridView', array(
'id'=>'grid1',
'dataProvider'=>$dataProvider,
'extraRowColumns' => array(
'description',
),
'columns'=>array(
array(
'class'=>'CLinkColumn',
'urlExpression'=>'Yii::app()->createUrl("task/view",array("id"=>$data->id));',
'labelExpression'=>'$data->id',
),
'tdescription',
'customer',
'username',
array(
'name'=>'incharge_time',
'value'=>'Yii::app()->dateFormatter->format("dd MMM yyyy H:mm",$data->incharge_time);',
),
'subtask',
array(
'name'=>'create_time',
'value'=>'Yii::app()->dateFormatter->format("dd MMM yyyy H:mm",$data->create_time);',
),
),
'mergeColumns'=>array(
'id',
'tdescription',
),
),
)); ?>
in order to merge the ‘id’ column:
array(
'class'=>'CLinkColumn',
'urlExpression'=>'Yii::app()->createUrl("task/view",array("id"=>$data->id));',
'labelExpression'=>'$data->id',
),
but, of course, it doesn’t work.
Hope what I wrote above is quite clear.
Thanks for any help! 
Hmm so I guess you’re combining both Merge in 2 Columns and Extra Row
I think you need to specify [font=“Courier New”]‘name’=>‘id’[/font] for you CLinkColumn…
Yes bennouna,
you’re right I combined both of them.
I checked in Class Reference about a ‘name’ property for CLinkColumn but it’s not available (trying to use it returns a missing property error).
I tried also to use the ‘labelExpression’ property to achieve it but it doesn’t work at all…
I suppose the problem is caused by the css class assigned to CLinkColumn fields, that is "link-column" whereas the one needed to merge the columns seems to be "merge".
Any idea/help? 
Hello, had the same problem with CButtonColumn. I decided to create a custom class:
<?php
class GroupButtonColumn extends CButtonColumn
{
public $name, $value, $cssClassExpression='\'button-column\'';
}
My GroupGridView looked like this:
<?php $this->widget('ext.groupgridview.GroupGridView', array(
...
'mergeColumns' => array('actions'),
'mergeType' => 'nested',
'columns' => array(
array(
'class' => 'GroupButtonColumn', //replace CButtonColumn by GroupButtonColumn
'name' => 'actions', //I can now set the "name" property
'buttons' => array(
...
For those who have the same doubt.