Yii2 GridView multiple rows for one record

Question

I am new in Yii2 framework. I did Gii table, and I wanted to show multiple data related to one ID.

Here is my Grid View:

 <?= GridView::widget([
    'dataProvider' => $dataProvider,

    'columns' => [
        'asosSlave.tovar_nom',


    ],
]); ?>

However, it is only showing one piece of information related to that id:

Answer 1

is this mean?

<?= GridView::widget([
    'dataProvider' => $dataProvider,

    'columns' => [
        'asosSlave.tovar_nom',
        ['label'=>'title','value'=>function($model){
             // do you want to do and return 
        )}]
    ],
]); ?>