我已經(jīng)設(shè)置了一個(gè)包含測(cè)試對(duì)象的包,該對(duì)象包含許多testQuestion對(duì)象,每個(gè)對(duì)象都是一個(gè)問(wèn)題和給定的答案(如果沒(méi)有答案則為0).從樹枝上我希望能夠從測(cè)試對(duì)象中獲取信息,說(shuō)明有多少問(wèn)題以及已經(jīng)回答了多少問(wèn)題.

我創(chuàng)建了一個(gè)查詢來(lái)將其從數(shù)據(jù)庫(kù)中拉出來(lái),在測(cè)試實(shí)體中我創(chuàng)建了2個(gè)新屬性來(lái)存儲(chǔ)問(wèn)題的數(shù)量和回答的數(shù)量.我創(chuàng)建了一個(gè)查詢所在的TestRepository. Test對(duì)象檢查對(duì)象是否設(shè)置了值,如果沒(méi)有,則在需要時(shí)加載它,因?yàn)槲也豢偸切枰@些信息.

但是我仍然堅(jiān)持如何將存儲(chǔ)庫(kù)代碼鏈接到測(cè)試對(duì)象,既調(diào)用repo函數(shù)又調(diào)用repo函數(shù)將值保存到相關(guān)的Test對(duì)象.

ACME / Quizbundle /測(cè)試/ test.php的

namespace Acme\QuizBundle\Entity;

use Doctrine\ORM\Mapping as ORM;

use Acme\QuizBundle\Entity\TestRepository;

/**

* @ORM\Entity(repositoryClass="Acme\QuizBundle\Entity\TestRepository")

* @ORM\Table(name="test")

*/

class Test {

protected $numQuestions = null;

protected $numQuestionsAnswered = null;

public function getNumQuestionsAnswered () {

if (is_null($this->numQuestionsAnswered)) {

$repository = $this->getEntityManager()->getRepository('\AcmeQuizBundle\Test');

$values = $repository->calculateNumQuestions();

}

return $this->numQuestionsAnswered;

}

Acme / Quizbundle / Test / TestRepository.php(有一個(gè)getNumQuestions()的匹配方法)

namespace Acme\QuizBundle\Entity;

use Doctrine\ORM\EntityRepository;

class TestRepository extends EntityRepository {

private function calculateNumQuestions() {

$qb = $this->getEntityManager()

->createQueryBuilder();

$query = $this->getEntityManager()->createQueryBuilder()

->select('COUNT(id)')

->from('testquestion', 'tq')

->where('tq.test_id = :id')

->setParameter('id', $this->getId())

->getQuery();

$result = $query->getSingleScalarResult();

var_dump($result);

}

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