关于php：在渲染模板的过程中抛出了异常(“A”__toString()”


An exception has been thrown during the rendering of a template ("A "__toString()"

我在继续操作时遇到了这个错误
tutorial.symblog.co.uk[第 4 部分]-评论模型：添加评论、Doctrine 存储库和迁移]

An exception has been thrown during the rendering of a template ("A"__toString()" method was not found on the objects of type"Blogger\\BlogBundle\\Entity\\Blog" passed to the choice field. To read a custom getter instead, set the option"property" to the desired property path.")
in BloggerBlogBundle:Blog:show.html.twig at line 23.

有人对此有所了解吗？

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// src/Blogger/BlogBundle/Entity/Blog.php
namespace Blogger\\BlogBundle\\Entity;
use Doctrine\\ORM\\Mapping as ORM;
use Doctrine\\Common\\Collections\\ArrayCollection;
/**
 * @ORM\\Entity(repositoryClass="Blogger\\BlogBundle\\Entity\
epository\\BlogRepositorya€?a€?")
 * @ORM\\Table(name="blog")
 * @ORM\\HasLifecycleCallbacks()
 */
class Blog {
    //..........
    public function __toString() {
        return $this->getTitle();
    }
}
相关讨论

只需在 Blog 实体中添加 __toString() 方法

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class Blog {

    //...

    function __toString() {
        return $this->getTitle(); // or any other field
    }
}