salespersonResourceModel->getConnection(); $query = $connection->query('select salesperson_id from customer_salesperson where customer_id = '. $customerId); $result = $query->fetchAll(); if (!empty($result)) { return array_column($result, 'salesperson_id'); } return []; } public function afterGetData( DataProviderWithDefaultAddresses $subject, array $result ): array { $logger = ObjectManager::getInstance()->get(LoggerInterface::class); foreach ($result as $id => $entityData) { if ($id) { $result[$id]['customer']['extension_attributes']['customer_abbr'] = $entityData['customer']['customer_abbr'] ?? null; $salesperson = $this->getSalesPerson($id); // $logger->warning('$salesperson', $salesperson); if ($salesperson) { $result[$id]['customer']['salespersons'] = $salesperson; } } } return $result; } }