Question

我试图了解为什么我的下拉列表不起作用。当我尝试运行与此模型/视图/控制器相关的自定义视图时，收到以下错误消息。

请原谅我的无知，因为我是代理人对PHP和PHP框架完全陌生。

站点控制器代码：

public function actionStudentcentrequiz()
  {
      $model = new GameId();
      $qnamodel = new Questions();
      $listData = ArrayHelper::map(Gameid::find()->all(), 'gameid','gamename');

      if ($qnamodel->load(Yii::$app->request->post())) {

              //PK FK relation
              $model->gameid = $qnamodel->gameid;

              if ($qnamodel->validate()) {
                  //var_dump($qnamodel); die;
                  //then save.
                  $qnamodel->save();
              }
              //form inputs are valid, do something here
              return;
      }

        return $this->render('studentcentrequiz', [
            'model' => $model,
            'qnamodel' => $qnamodel,
            'listData' => $listData,
        ]);
  }

view / questions / _form.PHP

use yii\helpers\Html;
use yii\widgets\ActiveForm;

/* @var $this yii\web\View */
/* @var $model app\models\Questions */
/* @var $form yii\widgets\ActiveForm */
?>

<div class="questions-form">

    <?php $form = ActiveForm::begin(); ?>

    <?= $form->field($model, 'Question')->textInput(['maxlength' => true]) ?>

    <?= $form->field($model, 'Answer1')->textInput(['maxlength' => true]) ?>

    <?= $form->field($model, 'Answer2')->textInput(['maxlength' => true]) ?>

    <?= $form->field($model, 'Answer3')->textInput(['maxlength' => true]) ?>

    <?= $form->field($model, 'Answer4')->textInput(['maxlength' => true]) ?>

    <?= $form->field($model, 'gameid')->dropDownList($listData,['prompt'=>'ChooseGameID']) ?>

    <div class="form-group">
        <?= Html::submitButton($model->isNewRecord ? 'Create' : 'Update', ['class' => $model->isNewRecord ? 'btn btn-success' : 'btn btn-primary']) ?>
    </div>

    <?php ActiveForm::end(); ?>

</div>

view / questions / _create.PHP

<?php

use yii\helpers\Html;


/* @var $this yii\web\View */
/* @var $model app\models\Questions */

$this->title = 'Create Questions';
$this->params['breadcrumbs'][] = ['label' => 'Questions', 'url' => ['index']];
$this->params['breadcrumbs'][] = $this->title;
?>
<div class="questions-create">

    <h1><?= Html::encode($this->title) ?></h1>

    <?= $this->render('_form', ['model' => $model, 'listData' => $listData,
     ]) ?>

</div>

view / questions / _update.PHP

<?php

use yii\helpers\Html;

/* @var $this yii\web\View */
/* @var $model app\models\Questions */

$this->title = 'Update Questions: ' . $model->questionID;
$this->params['breadcrumbs'][] = ['label' => 'Questions', 'url' => ['index']];
$this->params['breadcrumbs'][] = ['label' => $model->questionID, 'url' => ['view', 'id' => $model->questionID]];
$this->params['breadcrumbs'][] = 'Update';
?>
<div class="questions-update">

    <h1><?= Html::encode($this->title) ?></h1>

    <?= $this->render('_form', ['model' => $model, 'listData' => $listData,]) ?>

</div>

Answer 1

好吧，两个小时后出现同样的问题

查看：

$ form-> field（$ model [0]，'gameid'）-> dropDownList（$ listData，['prompt'=>'ChooseGameID']）

为什么？我不知道，我想向某人解释，我有41条记录，并且在下拉列表[0] [1] [2]中都以相同的方式出现...

Yii2下拉列表和数组助手“在数组上调用成员函数isAttributeRequired（）”

1 个答案: