Yii2 - ActiveRecord with relations to array -

i know there answer use asarray().
if need model relation , array @ same time?

in example demojson without relations:

$demo = demo::find()->with('bundles')->one();  // view <?= var demojson = json_encode($demo) ?> <!-- using array error --> <?= $demo->bundles[0]->somefunc() ?> <!-- using model ok --> 

in example there no somefunc() because simple array used:

$demo = demo::find()->with('bundles')->asarray()->one();  // view <?= var demojson = json_encode($demo) ?> <!-- using array ok --> <?= $demo['bundles'][0]->somefunc() ?> <!-- using model error --> 

so, how array model relations without using asarray.

you might try:

$demo = demo::find()->with('bundles')->limit(1)->one();  // view <?= var demojson = json_encode($demo->toarray()) ?> <?= $demo->bundles[0]->somefunc() ?> 

the demo model this:

namespace app\models;  use yii\db\activerecord;  class demo extends activerecord {     // ...      /**      * @return array      */     public function fields()     {         $fields = parent::fields();          if ($this->isnewrecord) {             return $fields;         }          $fields['bundles'] = function() {             $bundles = [];              foreach ($this->bundles $bundle) {                 $bundles[] = $bundle->toarray();             }              return $bundles;         }          return $fields;     } }