antares-cab/modules/api/controllers/UserController.php

<?php
namespace app\modules\api\controllers;

use app\models\user\User;
use yii\rest\ActiveController;

/**
 * Country Controller API
 *
 * @author Budi Irawan <deerawan@gmail.com>
 */
class UserController extends ActiveController
{
    public $modelClass = 'app\models\user\User';

    public function actionBulkAdd(){
        $requestParams = \Yii::$app->getRequest()->getBodyParams();

        $errs['err'] = array();

        foreach ($requestParams as $param){
            $user = new User();
            $user->uuid = $param['uuid'];
            $user->email = $param['email'];
            $user->username = $param['username'];
            $user->password = $param['password'];

            $user->save(false);
        }


        $result = $this->modelClass::find()->all();
        return $errs;
    }

}