未知属性并以编程方式以 Yii2 形式添加文本字段

Question

我正在添加动态表单域：

<?php
$channels = Channel::find()->all();

foreach ( $channels as $channel ) {
    $channel_name = 'channel_' . strtolower( $channel->name );
    ?>
    <div class="col-xs-2">
        <?= $form->field( $model, $channel_name )->textInput()->label( $channel->name ) ?>
    </div>
<?php } ?>

我已在rules() 中声明它是安全的：

$channels = Channel::find()->all();

foreach ( $channels as $channel ) {
    $rules[] = [['channel_' . $channel->name], 'safe'];
}

return $rules;

但是我遇到了一个错误：

获取未知属性：app\models\MyModel::channel_facebook

如何在 Yii2 中动态声明'channel_' . $channel->name 属性？

Answer 1

您可以简单地覆盖 attributes()，例如：

public function attributes()
{
    // just an example, not really efficient but it will work
    $attributes = [];
    $channels = Channel::find()->all(); 
    foreach ($channels as $channel) {
        $attributes[] = 'channel_' . strtolower($channel->name);
    }
    return array_merge(parent::attributes(), $attributes);
}