Doctrine2 Sortable Update Position - jquery-ui

Question

I am using Doctrine 2 with Symfony 2.3 and jQuery UI sortable.
I have a list of elements sortable with jQuery and the position is saved in the database through an Ajax request.
All seem to work perfectly except the data persistence... The position of the element and the other elements related to it in the database is wrong.
Example :
| ID | POSITION | TITLE
| 1 | 0 | Element 1
| 2 | 1 | Element 2
| 3 | 2 | Element 3
| 4 | 3 | Element 4
If I am moving ID 3 (position 3) to position 0, I get this result in the database:
| ID | POSITION | TITLE
| 1 | 2 | Element 1
| 2 | 2 | Element 2
| 3 | 0 | Element 3
| 4 | 4 | Element 4
I checked and the value inserted is right (0).
I am using this code to update the position:
$pyramid = $this->getDoctrine()->getRepository('MarquisWebsiteBundle:Pyramid')->find($id);
$pyramid->setPosition($position);
$em->persist($pyramid);
$em->flush();
It's working well if i am moving Element 1 from position 0 to position 1.
I am not using any SortableGroup on this table.
EDIT:
I am using StofDoctrineExtensionsBundle with the Gedmo DoctrineExtension and here is the configuration:
doctrine:
orm:
auto_generate_proxy_classes: %kernel.debug%
auto_mapping: true
mappings:
gedmo_sortable:
type: annotation
prefix: Gedmo\Sortable\Entity
dir: "%kernel.root_dir%/../vendor/gedmo/doctrine-extensions/lib/Gedmo/Sortable/Entity"
alias: GedmoSortable
is_bundle: false
gedmo_translatable:
type: annotation
prefix: Gedmo\Translatable\Entity
dir: "%kernel.root_dir%/../vendor/gedmo/doctrine-extensions/lib/Gedmo/Translatable/Entity"
alias: GedmoTranslatable
is_bundle: false
stof_doctrine_extensions:
default_locale: en_GB
translation_fallback: true
orm:
default:
sortable: true
translatable: true
And the entity (Pyramid.orm.yml):
Acme\DemoBundle\Entity\Pyramid:
type: entity
table: pyramid
fields:
id:
id: true
type: integer
unsigned: false
nullable: false
generator:
strategy: IDENTITY
position:
type: integer
unsigned: false
nullable: false
gedmo:
- sortablePosition
title:
type: string
length: 255
fixed: false
nullable: false
I don't think I need to change anything in the Pyramid.php class which looks like this:
/**
* Pyramid
*
* #ORM\Table(name="pyramid")
* #ORM\Entity
*/
class Pyramid
{
/**
* #var integer
*
* #ORM\Column(name="id", type="integer", nullable=false)
* #ORM\Id
* #ORM\GeneratedValue(strategy="IDENTITY")
*/
private $id;
/**
* #var integer
*
* #ORM\Column(name="position", type="integer", nullable=false)
*/
private $position;
/**
* #var string
*
* #ORM\Column(name="title", type="string", length=255, nullable=false)
*/
private $title;

Answer 1

I think you need to include the SortablePosition annotation:
/**
* #Gedmo\SortablePosition
* #ORM\Column(name="position", type="integer", nullable=false)
*/
private $position;