sort link disappears when used 'value' tag in yii2 gridview

Question

I am using Yii2 Advanced Template. Below is code for generating Gridview widget on index page.

<?= GridView::widget([
        'dataProvider' => $dataProvider,
        'filterModel' => $searchModel,
        'columns' => [
            ['class' => 'yii\grid\SerialColumn'],
            'invoice_id',
            [
                'label'=> 'Customer',
                'value' => function ($model) {
                    return ucfirst($model->customer->customer_name);
                },
                'enableSorting'=> TRUE,
            ],
            'invoice_type',
            'timestamp' => [
                'label' => 'Sale / Purchase Date',
                'attribute' => 'timestamp',
                'format' => ['date', 'php:y-m-d h:i:s A'],
            ],
            'payment_option',
            ['class' => 'yii\grid\ActionColumn','template'=>'{view} {delete}'],
        ],
    ]); 
?>

The problem is, despite using 'label' and 'enableSorting' for 'customer_name' when I use 'value' property, the Sort link Disappears. How to enable Sort link. Also attaching snapshot of my view;

After Solving the issue, when I click the sort link, i get below error.

Bizley Bizley · Accepted Answer · 2016-12-09T11:57:55

Try to modify this column configuration like this:

[
    'attribute' => 'customer.customer_name',
    'label'=> 'Customer',
    'value' => function ($model) {
        return ucfirst($model->customer->customer_name);
    },
],

sort link disappears when used 'value' tag in yii2 gridview

1 Answers