Souke/frontend/views/site/producers.php

<?php 

$this->setTitle('Producteurs') ;

?>

<h1 class="title-systeme-commande"><span class="glyphicon glyphicon-grain"></span>&nbsp;&nbsp;<?= Html::encode($this->title) ?></h1>

<?= 

GridView::widget([
    'dataProvider' => $data_provider_producers,
    'summary' => '',
    'columns' => [
        [
            'attribute' => 'nom',
        ],
        [
            'attribute' => 'type',
        ],
        [
            'label' => 'Localisation',
            'value' => function($model) {
                return $model->ville. ' ('.$model->code_postal.')' ;
            }
        ],
        [
            'label' => 'Lien',
            'format' => 'raw',
            'value' => function($model) {
                $icon_lock = (strlen($model->code)) ? ' <span class="glyphicon glyphicon-lock"></span>' : '' ;
                $html = Html::a('Visiter',Yii::$app->urlManagerProducer->createAbsoluteUrl(['site/index', 'slug_producer' => $model->slug]), ['class'=>'btn btn-primary']) ;
                $html .= $icon_lock ;
                return $html ;
            }
        ],
    ]
]);
                    
?>