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

Question

I've got this error while continuing with tutorial.symblog.co.uk[Part 4] - The Comments Model: Adding comments, Doctrine Repositories and Migrations]

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.

does any one got a clue on this?

// 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\Repository\BlogRepository‌​") 
 * @ORM\Table(name="blog") 
 * @ORM\HasLifecycleCallbacks() 
 */ 
class Blog { 
    //.......... 
    public function __toString() { 
        return $this->getTitle(); 
    } 
}

Answer 1

Just add __toString() method in your Blog entity

class Blog {

    //...

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