'The method name must start with either findBy or findOneBy. Undefined method Symfony?

I am working through part4 of Symfony2, and while updating the controller and helper class code i got the following error message

Undefined method 'getLatestBlogs'. The method name must start with either
findBy or findOneBy!

before i had put some code in controller that i shifted to my helper class as taught by tutorial, which result in the above error message.

<?php
// src/Blogger/BlogBundle/Repository/BlogRepository.php
namespace Blogger\BlogBundle\Repository;
use Doctrine\ORM\EntityRepository;

/**
 * BlogRepository
 * This class was generated by the Doctrine ORM. Add your own custom
 * repository methods below.
*/
class BlogRepository extends EntityRepository
{
 public function getLatestBlogs($limit = null)
 {
    $qb = $this->createQueryBuilder('b')
               ->select('b')
               ->addOrderBy('b.created', 'DESC');

    if (false === is_null($limit))
        $qb->setMaxResults($limit);

    return $qb->getQuery()
              ->getResult();
  } 
}

And here is my controller file index Action Code:-

// src/Blogger/BlogBundle/Controller/PageController.php
class PageController extends Controller
{
  public function indexAction()
  {
    $em = $this->getDoctrine()
               ->getEntityManager();

    $blogs = $em->getRepository('BloggerBlogBundle:Blog')
                ->getLatestBlogs();

    return $this->render('BloggerBlogBundle:Page:index.html.twig', array(
        'blogs' => $blogs
    ));
    }

    // ..
}

I am attaching few lines from /Entity/Blog.php file. please see if they are correct as per your answer.

<?php
// src/Blogger/BlogBundle/Entity/Blog.php

namespace Blogger\BlogBundle\Entity;
use Doctrine\ORM\Mapping as ORM;

/**
 * @ORM\Entity(repositoryClass="Blogger\BlogBundle\Repository\BlogRepository")
 * @ORM\Table(name="blog")
 * @ORM\HasLifecycleCallbacks()
 * @ORM\Entity
 */

class Blog
 {
  /**
   * @ORM\Id
   * @ORM\Column(type="integer")
   * @ORM\GeneratedValue(strategy="AUTO")
   * @ORM\HasLifecycleCallbacks()
  */
  protected $id;
  --
  --
 }

Where Am I doing wrong ?



Solution 1:[1]

Make sure that you have modified your entity class:

// src/Blogger/BlogBundle/Entity/Blog.php
/**
 * @ORM\Entity(repositoryClass="Blogger\BlogBundle\Repository\BlogRepository")
 * @ORM\Table(name="blog")
 * @ORM\HasLifecycleCallbacks()
 */
class Blog
{
    // ..
}

the annotation @ORM\Entity(repositoryClass="Blogger\BlogBundle\Repository\BlogRepository") is required.

And don't forget to regenerate entities:

php app/console doctrine:generate:entities Blogger

UPDATE

Remove annotation @ORM\Entity. It overrides correct annotation @ORM\Entity(repositoryClass="Blogger\BlogBundle\Repository\BlogRepository")

Solution 2:[2]

In my case adding proper annotation was insufficient.
Deleting Doctrine Cache by php app/console doctrine:cache:clear-metadata also not worked.

I generate my entities from database by commands

php app/console doctrine:mapping:import --force AcmeBlogBundle xml
php app/console doctrine:mapping:convert annotation ./src
php app/console doctrine:generate:entities AcmeBlogBundle

First command generate orm.xml file for each DB Table in my project. After DELETING all orm.xml files Annotations started work properly.

Solution 3:[3]

If youre using yml as config files for your entities try adding this:

Blogger\BlogBundle\Entity\Blog:
    type: entity
    table: Blog
    repositoryClass: Blogger\BlogBundle\Repository\BlogRepository
    ...

and then as mentioned above:

php app/console doctrine:generate:entities Blogger

Solution 4:[4]

The other solution is to delete all the orm.xml files added by generated entities. If you move the folder or delete, your mapping with repository will be operationnal.

Solution 5:[5]

In case you are using PHP-FPM then this issue might persist even after all the above solutions you have tried then use sudo service php5-fpm restart which did the trick for me.

Solution 6:[6]

 * @ORM\Entity(repositoryClass="Blogger\BlogBundle\Repository\BlogRepository")

Try putting the repository class at the same directory next to the Entity class:

     * @ORM\Entity(repositoryClass="Blogger\BlogBundle\BlogRepository")

Solution 7:[7]

For me it helped to restart my vm (Vagrant Box)

Solution 8:[8]

In Symfony 3 you are probably missing the repository class in your orm.xml file.

repository-class="Bundle\Repository\MyRepository"

Example:

<doctrine-mapping>
    <entity name="Bundle\Entity\MyEntity"
            table="tablename"
            repository-class="Bundle\Repository\MyRepository">
        <id name="id" type="integer" column="id">
            <generator strategy="AUTO"/>
        </id>
    </entity>
</doctrine-mapping>

Solution 9:[9]

In my case, there was no method in that particular place. After placing/creating the according method the error was gone.

Sources

This article follows the attribution requirements of Stack Overflow and is licensed under CC BY-SA 3.0.

Source: Stack Overflow

Solution Source
Solution 1
Solution 2
Solution 3 s1x
Solution 4 Benjamin Petit
Solution 5
Solution 6 K-Alex
Solution 7 Heisoka
Solution 8 tobias47n9e
Solution 9 sh6210