Symfony2 save embedding collection form - php

Question

I got problem to save embedded collection form field. Let say I have program, and the program have many levels. In my form type:
ProgramType.php
<?php
namespace Eifl\AdminBundle\Form\Type;
use Symfony\Component\Form\AbstractType;
use Symfony\Component\Form\FormBuilderInterface;
use Symfony\Component\OptionsResolver\OptionsResolverInterface;
class ProgramType extends AbstractType
{
public function buildForm(FormBuilderInterface $builder, array $options)
{
$builder
->add('id','text',array(
'label'=>'Program Code',
))
->add('program','text',array(
'label'=>'Program Name',
))
->add('levels','collection', array(
'type'=>new LevelType(),
'allow_add'=>true,
'allow_delete'=>true,
'by_reference' => false,
))
->add('save','submit', array(
'label'=>'Save',
));
}
public function setDefaultOptions(OptionsResolverInterface $resolver)
{
$resolver->setDefaults(array(
'data_class' => 'Eifl\AdminBundle\Entity\Program',
));
}
public function getName()
{
return 'Program';
}
}
LevelType.php
<?php
namespace Eifl\AdminBundle\Form\Type;
use Symfony\Component\Form\AbstractType;
use Symfony\Component\Form\FormBuilderInterface;
use Symfony\Component\OptionsResolver\OptionsResolverInterface;
class LevelType extends AbstractType
{
public function buildForm(FormBuilderInterface $builder, array $options)
{
$builder->add('level','text',array(
'label'=>'Level Name',
));
}
public function setDefaultOptions(OptionsResolverInterface $resolver)
{
$resolver->setDefaults(array(
'data_class' => 'Eifl\AdminBundle\Entity\Level',
));
}
public function getName()
{
return 'level';
}
}
I made the form that can add a new collection level field using jquery, following the tutorial from this link, and the result of my form is same with the picture in this link.
Now my problem is I can't save more than 2 levels. The collection form only save 2 levels.
e.g. I want to save a program name as English, and after that I add 3 levels(basic,intermediate,advanced). The levels that saved successfully to database only the first level(basic) and the last level(Advanced). All I want is to save all the levels to database. Can anyone help me?
In addition, here is part of my controller:
DefaultController.php
public function programAction(Request $request)
{
$program = new Program();
$level = new Level();
$program->getLevels()->add($level);
$newProgram = $this->createForm(new ProgramType(),$program);
$newProgram->handleRequest($request);
if($newProgram->isValid()){
$em = $this->getDoctrine()->getManager();
$em->persist($program);
$em->flush();
return $this->redirect($this->generateUrl('eifl_admin_program'));
}
return $this->render('EiflAdminBundle:Default:program.html.twig',array("new_program_form"=>$newProgram->createView()));
}
UPDATE
Here is my entity class.
Program.php
<?php
namespace Eifl\AdminBundle\Entity;
use Doctrine\ORM\Mapping as ORM;
use Doctrine\Common\Collections\ArrayCollection;
/**
* Program
*
* #ORM\Entity
* #ORM\Table(name="tbl_program")
*/
Class Program
{
/**
* #ORM\Id
* #ORM\Column(name="id", type="string")
*/
protected $id;
/**
*#ORM\Column(name="program_name",type="string")
*/
public $program;
/**
* #ORM\OneToMany(targetEntity="Eifl\AdminBundle\Entity\Level", mappedBy="program", cascade={"remove","persist"})
*/
public $levels;
public function __construct(){
$this->levels = new ArrayCollection();
}
/**
* #param string $id
* #return string
*/
public function setId($id)
{
$this->id = $id;
return $this;
}
/**
* Add Level
*
* #param \Eifl\AdminBundle\Entity\Level $levels
* #return Program
*/
public function addLevels(\Eifl\AdminBundle\Entity\Level $level) {
$this->levels[] = $level;
$levels->setProgram($this);
return $this;
}
/**
* set levels
*
* #param \Doctrine\Common\Collections\ArrayCollection $levels
* #return levels
*/
public function setLevels(\Doctrine\Common\Collections\ArrayCollection $levels) {
foreach ($levels as $level) {
$level->setProgram($this);
}
$this->levels = $levels;
}
public function removeLevels(\Eifl\AdminBundle\Entity\Level $level)
{
$this->levels->removeElement($level);
}
/**
* #param string $program
* #return string
*/
public function setProgram($program)
{
$this->program = $program;
return $this;
}
/**
* #return mixed
*/
public function getId()
{
return $this->id;
}
/**
* #return string
*/
public function getProgram()
{
return $this->program;
}
/**
* #return string
*/
public function getLevels()
{
return $this->levels;
}
}
Level.php
<?php
namespace Eifl\AdminBundle\Entity;
use Doctrine\ORM\Mapping as ORM;
/**
* Level
*
* #ORM\Entity
* #ORM\Table(name="tbl_level")
*/
Class Level
{
/**
* #ORM\Id
* #ORM\Column(name="id", type="integer")
* #ORM\GeneratedValue(strategy="AUTO")
*/
protected $id;
/**
*#ORM\Column(name="level",type="string")
*/
public $level;
/**
* #ORM\ManyToOne(targetEntity="Eifl\AdminBundle\Entity\Program", inversedBy="levels")
* #ORM\JoinColumn(name="program", referencedColumnName="id")
*/
public $program;
/**
* #param string $id
* #return string
*/
public function setId($id)
{
$this->id = $id;
return $this;
}
/**
* #param string $level
* #return string
*/
public function setLevel($level)
{
$this->level = $level;
return $this;
}
/**
* #param mixed $program
* #return string
*/
public function setProgram(\Eifl\AdminBundle\Entity\Program $program)
{
$this->program = $program;
return $this;
}
/**
* #return mixed
*/
public function getId()
{
return $this->id;
}
/**
* #return string
*/
public function getLevel()
{
return $this->level;
}
/**
* #return string
*/
public function getProgram()
{
return $this->program;
}
}

Answer 1

Check if you put addLevel and setLevel in your program entity
/**
* Add Level
*
* #param \Eifl\AdminBundle\Entity\Level $levels
* #return Program
*/
public function addLevel(\Eifl\AdminBundle\Entity\Level $levels) {
$this->levels[] = $levles;
$level->setProgram($this);
return $this;
}
/**
* set levels
*
* #param \Doctrine\Common\Collections\ArrayCollection $levels
* #return levels
*/
public function setLevels(\Doctrine\Common\Collections\ArrayCollection $levels) {
foreach ($levles as $level) {
$level->setPogram($this);
}
$this->levels = $levels;
}

Answer 2

remove this code from the controllor
$level = new Level();
$program->getLevels()->add($level);

Answer 3

Your getter and setter $levels in Entity Program are confused...
make :
public function addLevel(Level $level) { //without s
$this->levels[] = $level;
}
public function removeLevel(Level $level) //without s
{
$this->levels->removeElement($level);
}
public function getLevels()
{
return $this->levels;
}
Remove otherspublic function setLevels, public function removeLevels, etc
Like Adene Choubi said, $program->getLevels()->add($level); make no sense too.
Don't know if it's the only trouble but begin with that.