Yii2中DropDownList简单用法示例

<&＃63;php
use common\models\Category;
use yii\helpers\ArrayHelper;
use yii\helpers\Html;
use yii\widgets\ActiveForm;
/* @var $this yii\web\View */
/* @var $model common\models\Category */
/* @var $form yii\widgets\ActiveForm */
&＃63;>

  

    <&＃63;php
    if (!$model->isNewRecord) {//如果是编辑分类
      $cate = ArrayHelper::map(Category::find()->andWhere('id != :id', [':id' => $model->id])->all(), 'id', 'title');
    } else {//如果是新建分类
      $cate = ArrayHelper::map(Category::find()->all(), 'id', 'title');
    }
    &＃63;>
    

      <&＃63;php $form = ActiveForm::begin(); &＃63;>
      <&＃63;= $form->field($model, 'title')->textInput(['maxlength' => 100])->label("分类标题") &＃63;>
      <&＃63;= $form->field($model, 'name')->textInput(['maxlength' => 100])->label("分类别名") &＃63;>
      <&＃63;= $form->field($model, 'pid')->dropDownList($cate, ['prompt' => '请选择父分类'])->label("父分类") &＃63;>
      <&＃63;= $form->field($model, 'keywords')->textarea(['maxlength' => 255])->label("分类关键词") &＃63;>
      <&＃63;= $form->field($model, 'description')->textarea(['maxlength' => 255])->label("分类描述") &＃63;>
      

        

          

            <&＃63;= Html::submitButton($model->isNewRecord &＃63; '创建' : '更新', ['class' => $model->isNewRecord &＃63; 'btn btn-block btn-success' : 'btn btn-block btn-primary']) &＃63;>
          
        
      
      <&＃63;php ActiveForm::end(); &＃63;>