未知属性并以Yii2格式以编程方式添加文本字段

Question

我正在添加动态表单字段：

<?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 } ?>

我在rules()：

中宣布它是安全的

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

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

return $rules;

但是我收到了错误：

  

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);
}