backend/views/importers-prefix/index.php

<?php
use yii\helpers\Html;
use yii\grid\GridView;
use yii\widgets\Pjax;
use yii\bootstrap\Modal;
use backend\assets\ParserAsset;
use yii\helpers\Url;
/* @var $this yii\web\View */
/* @var $searchModel backend\models\ImportersPrefixSearсh */
/* @var $dataProvider yii\data\ActiveDataProvider */
$this->title = Yii::t('app', 'Список префиксов поставщиков');
$this->params['breadcrumbs'][] = $this->title;
ParserAsset::register($this);
$url = Url::to(['create']);
?>
<div class="importers-prefix-index">
    <h1><?= Html::encode($this->title) ?></h1>
    <p>
        <?= Html::a(Yii::t('app', 'Добавление'), '#', ['class' => 'btn btn-success modalButton',  'value' => $url]) ?>
    </p>
    <?php // echo $this->render('_search', ['model' => $searchModel]);
    Pjax::begin(['id' => 'gridViewContent']);
    ?>
    <?= GridView::widget([
        'dataProvider' => $dataProvider,
        'filterModel' => $searchModel,
        'columns' => [
            ['class' => 'yii\grid\SerialColumn'],
            [
                'attribute' => 'importer_id',
                'label' => 'ПОСТАВЩИК',
                'value' => function ($data) {
                    return $data->importerName;}
                ],
            [
                'attribute' => 'brand',
                'label' => 'БРЕНД',
                ],
            [
                'attribute' => 'prefix',
                'label' => 'ПРЕФИКСЫ (ЧЕРЕЗ ,)',
            ],
            [
                'attribute' => 'timestamp',
                'label' => 'ДАТА ДОБАВЛЕНИЯ',
            ],
            ['class' => 'yii\grid\ActionColumn',
                'template' => '{update},{delete}'],
        ],
    ]);
    // сюда будем всавлять контент модального окна
    Modal::begin([
        'id' => 'modal',
        'size' => 'modal-lg',
    ]);
    echo "<div class='modalContent'></div>";
    Modal::end();
    Pjax::end();
    ?>
</div>