<?= $form->field($model, 'date', ['template' => "{label}\n{input}"])->widget(DateTimePicker::className(), [
    'template' => '{reset}{button}{input}',
    'pickButtonIcon' => 'glyphicon glyphicon-time',
    'options' => [
        'value' => date('M d, Y H:i:s', strtotime($model->date)),