Php Symfony 2-尝试从同一类中的另一个方法获取属性

正如您在下面的代码中看到的，我正在尝试进行子导航。我想从头开始，而不是使用捆绑包，因为我将此作为学习练习。我已经到了一个地步，我想我已经差不多把它破解了。我现在只需要访问subNavAction（）内部的navAction（）db查询的结果

我已经设法做到了“echo self:：navAction（$sector）；”这会再次显示完整的导航，但我似乎无法访问查询中的单个项目。我实际上需要做的是循环遍历navAction（）的结果，并获得所有包含子项的项的结果

我对OOPHP（虽然我对程序非常熟悉）和Symfony/Doctrine非常陌生，所以您能给我的答案越全面越好

//Render Navigation
public function navAction($sector)
{
    $em = $this->getDoctrine()->getManager();
    $query = $em->createQuery(
       "SELECT DISTINCT p.pageName, p.pageParent
        FROM styleGuideBundle:pages p 
        WHERE  p.pageSector LIKE :sector 
        AND p.pageType = 2"
    );
    $query->setParameter(':sector', '%'.$sector.'%');
    $navItems = $query->getResult();
    if (!$navItems) throw $this->createNotFoundException('Unable to find any pages under this category');
    return $this->render(
        'styleGuideBundle:Partial:peNav.html.twig',
        array(
            'navItems' => $navItems,
            'sector' => $sector
        )
    );
}

//Render SubNavigation
public function subnavAction($sector)
{
    echo self::navAction($sector); // This line is where I got stuck.
    $em = $this->getDoctrine()->getManager();
    $query = $em->createQuery(
       "SELECT DISTINCT p.pageName, p.pageParent
        FROM styleGuideBundle:pages p 
        WHERE  p.pageSector LIKE :sector 
        AND p.pageType = 2"
    );
    $query->setParameter(':sector', '%'.$sector.'%');
    $navItems = $query->getResult();
    if (!$navItems) throw $this->createNotFoundException('Unable to find any pages under this category');
    return $this->render(
        'styleGuideBundle:Partial:peNav.html.twig',
        array(
            'navItems' => $navItems,
            'sector' => $sector
        )
    );
}

---

这不是最好的解决方案，但您可以创建一个对象变量$this->navItems

PageController extends Controller {

      public $navItems = null; 

    //Render Navigation
        public function navAction($sector)
        {
            $em = $this->getDoctrine()->getManager();
            $query = $em->createQuery(
               "SELECT DISTINCT p.pageName, p.pageParent
                FROM styleGuideBundle:pages p 
                WHERE  p.pageSector LIKE :sector 
                AND p.pageType = 2"
            );
            $query->setParameter(':sector', '%'.$sector.'%');
            $this->navItems = $query->getResult();

            if (!$this->navItems) throw $this->createNotFoundException('Unable to find any pages under this category');
            return $this->render(
                'styleGuideBundle:Partial:peNav.html.twig',
                array(
                    'navItems' => $this->navItems,
                    'sector' => $sector
                )
            );
        }


        //Render SubNavigation
        public function subnavAction($sector)
        {
            $this->navAction($sector);
            var_dump($this->navItems);

            $em = $this->getDoctrine()->getManager();
            $query = $em->createQuery(
               "SELECT DISTINCT p.pageName, p.pageParent
                FROM styleGuideBundle:pages p 
                WHERE  p.pageSector LIKE :sector 
                AND p.pageType = 2"
            );
            $query->setParameter(':sector', '%'.$sector.'%');
            $navItems = $query->getResult();
            if (!$navItems) throw $this->createNotFoundException('Unable to find any pages under this category');
            return $this->render(
                'styleGuideBundle:Partial:peNav.html.twig',
                array(
                    'navItems' => $navItems,
                    'sector' => $sector
                )
            );
}

---

请看，这就是我在谷歌搜索后应该做的，但它会导致以下错误：注意：未定义属性：StyleGuideBundle\Controller\PageController:：$navItems in/Volumes/Projects/styleguide/site/Guidelines/src/StyleGuideBundle/Controller/PageController.php第104行只要在Controller:-->类中创建它PageController扩展控制器{$this->navItems=null；…它也不喜欢这样：“FatalErrorException:Parse:语法错误，意外的“$this”（t_变量），期望函数（t_函数）”我像这样尝试“public$navItems=null”；错误改为：“警告：为foreach（）提供的参数无效”很抱歉，是这样的：public$navItems=null；现在您可以在控制器中获得$this->navItems变量。请尝试打印（$this->navItems）；