Question

有人能用这段代码告诉我原因：

<?php
public function continentAndCountriesAction()
{
    $manager = $this->getDoctrine()->getManager();
    $repository = $manager->getRepository('FkgDemoBundle:Continent');
    $europeEntity = $repository->findOneByName('Europe');

    if (!$europeEntity) {
        $europeEntity = new Continent();
        $europeEntity->setName('Europe');
        $manager->persist($europeEntity);
    }

    $countries = array('Poland', 'Germany', 'Czech Republic', 'Italy', 'France');
    foreach ($countries as $country) {
        $country = new Country();
        $country->setName($country);
        $country->setContinent($europeEntity);
        $manager->persist($country);
    }

    $manager->flush();

    $entities = $repository->findAll();
    return $this->render('FkgDemoBundle:Default:continent.html.twig', compact('entities'));
}

我在视图中只显示“欧洲”（大陆），但如果我将保存实体删除到数据库，如下所示：

<?php
public function continentAndCountriesAction()
{
    $manager = $this->getDoctrine()->getManager();
    $repository = $manager->getRepository('FkgDemoBundle:Continent');
    $europeEntity = $repository->findOneByName('Europe');

    if (!$europeEntity) {
        throw $this->createNotFoundException('Continent not found.');

    $entities = $repository->findAll();
    return $this->render('FkgDemoBundle:Default:continent.html.twig', compact('entities'));
}

一切都按照我的预期加载 - 欧洲与国家？

Profiler在插入http://screencast.com/t/MZuTdUHJIJc并拥有最后查询（findAll（））时为我提供了12个查询http://screencast.com/t/dfDSprfjV9y 但如果我不保存实体，则findAll（）结果不同：http://screencast.com/t/KoCZcsp00th。

使用Doctrine2加载实体时是否“神奇”？ Symfony 2.3.7 学说2.3.4

Symfony 2和Doctrine2没有加载完整的实体

0 个答案: