master/views/slider/_form.php

<?php
    
    use artweb\artbox\design\models\Slider;
    use yii\helpers\Html;
    use yii\widgets\ActiveForm;
    use kartik\select2\Select2;
    
    /* @var $this yii\web\View */
    /* @var $model Slider */
    /* @var $form yii\widgets\ActiveForm */
?>

<div class="slider-form">
    
    <?php $form = ActiveForm::begin(); ?>
    
    <?= $form->field($model, 'speed')
             ->textInput() ?>
    
    <?= $form->field($model, 'duration')
             ->textInput() ?>
    
    <?= $form->field($model, 'title')
             ->textInput([ 'maxlength' => true ]) ?>

    <?= $form->field($model, 'status')
             ->widget(
                 Select2::className(),
                 ( [
                     'name'          => 'status',
                     'hideSearch'    => true,
                     'data'          => [
                         1 => 'Active',
                         2 => 'Inactive',
                     ],
                     'options'       => [ 'placeholder' => 'Select status...' ],
                     'pluginOptions' => [
                         'allowClear' => true,
                     ],
                 ] )
             ) ?>
    
    <div class="form-group">
        <?= Html::submitButton(
            $model->isNewRecord ? Yii::t('app', 'Create') : Yii::t('app', 'Update'),
            [ 'class' => $model->isNewRecord ? 'btn btn-success' : 'btn btn-primary' ]
        ) ?>
    </div>
    
    <?php ActiveForm::end(); ?>

</div>