How to multiply two columns in yii2 grid view - php

Question

I want to multiply two columns in the yii2 grid the grid view is as follows
<?= GridView::widget([
//'dataProvider' => $dataProvider,
'dataProvider'=>new ActiveDataProvider([
'query' => Adanalytics::find()->
where(['publisher_id' => Yii::$app->user->identity->id ])->
select('id,ad_id,MAX(impression) AS impression, MAX(view) AS view, MAX(clicks) AS clicks,MAX(cpc) AS cpclick,MAX(cpv) AS cpview, (MAX(clicks)*MAX(cpc)) AS totalccost')->
groupBy('ad_id, visitor_ip'),
]),
'filterModel' => $searchModel,
'columns' => [
['class' => 'yii\grid\SerialColumn'],
//'id',
'ad_id',
//'advertiser_id',
//'publisher_id',
//'visitor_ip',
//'type_ad',
'impression',
'view',
'clicks',
//'placed_date',
//'cpc',
//'cpv',
'cpclick',
'cpview',
'totalccost',
//'cpi',
['class' => 'yii\grid\ActionColumn'],
],
]); ?>
But it is not giving me the desired output where am I going wrong how can i do this?

Answer 1

If you need the column only as display value in the gridview you can create a calculated column.
'cpview',
[
'label' => 'Totalcost',
'value' => function($model){
return $model->cpclick * $model->clicks;
}
],
Or else you can add at the start of your Adanalytics class
public $totalccost;

Answer 2

if you want to use the calculation anywhere you can do following.
in your model
public function getTotalcost()
{
return $this->clicks * $this->cpclick;
}
and you can label to this attribute
public function attributeLabels()
{
return [
...
'totalcost' => Yii::t('app', 'Total cost'),
];
}
in grid view column
...
'cpview',
'totalcost'
You can use this function anywhere as $model->totalcost

Answer 3

I have solved the problem by using yii2 db query which is like this way.
$subquery = Adanalytics::find()->
select('id,ad_id,date_event,max(cpc) cpclick,max(cpv) cpview,max(impression) impression,max(view) view,max(clicks) clicks,visitor_ip,publisher_id')->
from('ad_analytics')->
where(['publisher_id' => Yii::$app->user->identity->id ])->
groupBy('ad_id,date_event,visitor_ip');
$query=Adanalytics::find()->
select('ad_id,date_event,sum(cpclick) total_click_cost,sum(cpview) total_view_cost,sum(impression) total_impression,sum(view) total_views,sum(clicks) total_clicks,publisher_id')->
from(['t'=>$subquery])->
groupBy('t.ad_id,t.date_event');
And called the column in grid view.
'columns' => [
['class' => 'yii\grid\SerialColumn'],
'ad_id',
'total_impression',
'total_views',
'total_clicks',
'total_click_cost',
'total_view_cost',
'date_event',
['class' => 'yii\grid\ActionColumn'],
],
Defined them in model before calling.
public $total_click_cost;
public $total_view_cost;
public $total_impression;
public $total_views;
public $total_clicks;