Yii1 CGridView - SUM of Custom Column Value in footer - yii

Question

I want Sum of a custom column value in footer
GridView Code
$this->widget('zii.widgets.grid.CGridView', array(
'id'=>'booking-grid',
'dataProvider'=>$model->search(),
'columns'=>array(
array(
'name'=>'name',
'header'=>'User Name',
'value'=>'$data->booking_id',
'filter'=>false,
'footer'=>'Total',
'footerHtmlOptions'=>array('class'=>'grid-footer'),
),
array(
'name'=>'id',
'header'=>'User Fee',
'value'=> array($model,'GetUserFee'),
'filter'=>false,
'footer'=>'' . $model->getTotal($model->search()->getData(), 'id'),
'footerHtmlOptions'=>array('class'=>'grid-footer'),
),
),
));
Get Total
public function getTotal($records,$colName){
$total = 0.0;
if(count($records) > 0){
foreach ($records as $record) {
$total += $record->$colName;
}
}
return number_format($total,2);
}
Second column value are calculate user fee.
In footer sum of User Fee values get the wrong sum. It gives the sum of user ids. and id is table column name.
How can I get the sum of User fee column values

Answer 1

Instead of using a literal representation of id, try using the $data variable created by CGridView, which actually IS the current record from the $model currently being processed in each CGridView iteration.
Your code would then be:
array(
'name'=>'id',
'header' => 'User Fee',
'type' => 'raw',
'value' => '$data->id',
'filter' => false,
'footer' => '$model->getTotal($data)',
'footerHtmlOptions' => array('class'=>'grid-footer'),
),
Notice the value of the type attribute is set to raw.
You can even use a PHP function and pass it the $data variable, like so:
array(
'name'=>'id',
'header' => 'User Fee',
'type' => 'raw',
'value' => function ($data) { ... handle $data how you like ... }
'filter' => false,
'footer' => '$model->getTotal($data)',
'footerHtmlOptions' => array('class'=>'grid-footer'),
),
For more information check out special variables in Yii