Yii2 + Seletc 2 + Tags

echo '<label class="control-label">Tag Content</label>';
echo Select2::widget([
    'model' => $model,
    'attribute' => 'tags',
    'name' => 'tags',
    'data' => common\models\Tag::getOptions(),
    'options' => [
        'placeholder' => 'Select a color ...',
        'class' => 'form-control',
        'multiple' => true
    ], ]);

class Model {
 
public static function getOptions(){
    $data=  static::find()->all();
   $value=(count($data)==0)? [''=>'']: \yii\helpers\ArrayHelper::map($data, 'id','name'); //id = your ID model, name = your caption
 
    return $value;
}
 
}