Smopp_v2/tmc/api/give_tmc.php

<?php /** Created by Anton on 28.01.2020. */

require '../yiiInit.php';

use app\models\entity\Log;
use app\models\entity\Tmc;
use app\models\entity\TmcStatus;
use app\models\entity\UserDevice;
use yii\helpers\Url;

$userId = (int) Yii::$app->request->post('user');
$inventoryNum = Yii::$app->request->post('inventoryNum');

$tmc = Tmc::findOne(['inventory_num' => $inventoryNum]);

if ($userId && $tmc) {
    $userDevice = UserDevice::findOne(['employee' => $userId]) ?: new UserDevice();
    $fieldName = $userDevice->getFieldNameById($tmc->tmc_type);
    if (!$userDevice->$fieldName) {
        //Пишем в логи факт выдачи утстройства
        $log = new Log();
        $log->employee = $userId;
        $log->tmc = $tmc->id;
        $log->issue_date = (new DateTime())->format('y-m-d H:i:s');
        $result = $log->save();

        $userDevice->$fieldName = $log->id;
        $userDevice->employee = $userId;
        $userDevice->save();

        $tmc->status = TmcStatus::TMC_STATUS_ISSUED;
        $tmc->employee = $userId;
        $tmc->save();
    }
}

Yii::$app->response->redirect(Url::to($_SERVER['HTTP_REFERER']))->send();