symfony - 如何获取所有材料的id？

Question

帮我

public function indexAction() 
{


$tpos = $this->getDoctrine()->getRepository('TestBundle:Materials')->findAll();

foreach($tposs as $tpos) {
     $posts['id'];
} 

echo $midcount;

你将会怎样？

注意：未定义索引：id

Answer 1

$materials = $this->getDoctrine()->getRepository('TestBundle:Materials')->findAll();
$materialIds = array();
foreach ($materials as $material) {
    $materialIds[] = $material->getId();
}