yii2 下拉框自带搜索

composer require kartik-v/yii2-widget-select2 "@dev"。

use kartik\select2\Select2; field($model, 'charger_id')->widget(Select2::classname(), [ 'data' => \yii\helpers\ArrayHelper::map(\common\models\Category::find()->asArray()->all(),'id','name'), 'options' => ['placeholder' => '请选择 ...'], ]); ?>

use kartik\select2\Select2; echo Select2::widget([ 'name' => 'title', 'data' => \yii\helpers\ArrayHelper::map(\common\models\Category::find()->asArray()->all(),'id','name'), 'options' => ['placeholder' => '请选择...'] ]);