试图调用名为 "getDoctrine" 的未定义方法 class "App\Twig\AppExtension"

Question

我刚开始学习symfony4。我在使用树枝扩展中的学说时遇到问题。如何在树枝扩展中使用学说查询。

请帮助我如何为此代码配置服务


namespace App\Twig;

use Twig\Extension\AbstractExtension;
use Twig\TwigFilter;
use Twig\TwigFunction;

class AppExtension extends AbstractExtension
{
     public function getFilters(): array
    {
        return [
            // If your filter generates SAFE HTML, you should add a third
            // parameter: ['is_safe' => ['html']]
            // Reference: https://twig.symfony.com/doc/2.x/advanced.html#automatic-escaping
            new TwigFilter('filter_name', [$this, 'doSomething']),
        ];
    }

    public function getFunctions(): array
    {
        return [
            new TwigFunction('followed', [$this, 'doSomething']),
        ];
    }

    public function doSomething($id, $admin)
    {
        // ...
        $follower = $this->getDoctrine()->getRepository(Follower::class)->findAll();
        foreach( $follower as $value ){
            if($value['user']==$admin && $value['followed_user']==$id) return false;
        }
        return true;
    }
}

这是我的树枝函数代码

{% if followed(users.id, app.user.id) %}

我运行页面时出现错误 试图调用 class "App\Twig\AppExtension" 的名为 "getDoctrine" 的未定义方法 "App\Twig\AppExtension"。

请帮我提供解决方案

Answer 1

getDoctine 是在 AbstractController（或 ControllerTrait 中定义的函数）并且在 Twig 扩展中不可用。您需要将 doctrine 服务注入您的 class。为简洁起见省略了大部分代码：

use Doctrine\Common\Persistence\ManagerRegistry;

class AppExtension extends AbstractExtension
{
    private $em;

    public function __construct(ManagerRegistry $registry)
    {
        $this->em = $registry;
    }

    public function doSomething($id, $admin)
    {
        $follower = $this->em->getRepository(Follower::class)->findAll();
        // ...
    }
}

Answer 2

我用过这个，现在问题解决了

    use Doctrine\Common\Persistence\ManagerRegistry;

    public function doSomething($id, $admin)
    {
        // ...
        $follower = $this->em->getRepository(Follower::class)->findBy([
            'followed_user' => $id,
            'user' => $admin
        ]);

        if(sizeof($follower)>0) return false;
        else return true;
    }

试图调用名为 "getDoctrine" 的未定义方法 class "App\Twig\AppExtension"

Attempted to call an undefined method named "getDoctrine" of class "App\Twig\AppExtension"

php

doctrine

doctrine-orm

symfony4