Definition of association cause Entity gets invalid - symfony

Question

I'm working on a project but all the time I'm seeing this mappings problems:
The association PL\OrderBundle\Entity\Order#company refers to the
inverse side field PL\CompanyBundle\Entity\Company#id which is not
defined as association.
The association PL\OrderBundle\Entity\Order#company refers to the inverse side field
PL\CompanyBundle\Entity\Company#id which does not exist.
The association PL\OrderBundle\Entity\Order#medias refers to the owning
side field Application\Sonata\MediaBundle\Entity\Media#orders which
does not exist.
For more than I read and read Doctrine Docs I don't know how to fix them, what is wrong? any help? Here are the related entities:
PL\OrderBundle\Entity\Order.php
<?php
namespace PL\OrderBundle\Entity;
use Doctrine\ORM\Mapping as ORM;
/**
* #ORM\Entity
* #ORM\Table(name="tb_order")
*/
class Order {
/**
* #ORM\Id
* #ORM\Column(type="string", length=15, unique=true, nullable=false)
*/
protected $no_order;
/**
* #ORM\ManyToOne(targetEntity="PL\CompanyBundle\Entity\Company", inversedBy="id")
*/
protected $company;
/**
* #ORM\Column(type="string", length=15, unique=true)
*/
protected $business_case;
/**
* #ORM\Column(type="integer", length=1)
*/
protected $charge_status;
/**
* #ORM\Column(type="datetime")
*/
protected $eta;
/**
* #ORM\Column(type="datetime")
*/
protected $etd;
/**
* #ORM\Column(type="integer", length=1)
*/
protected $transport_media;
/**
* #ORM\Column(type="integer", length=1)
*/
protected $incoterm;
/**
* #ORM\Column(type="string", length=250)
*/
protected $comments;
/**
* #ORM\ManyToMany(targetEntity="Application\Sonata\MediaBundle\Entity\Media", mappedBy="orders")
*/
protected $medias;
public function __construct() {
$this->medias = new \Doctrine\Common\Collections\ArrayCollection();
}
public function setNoOrder($no_order) {
$this->no_order = $no_order;
}
public function getNoOrder() {
return $this->no_order;
}
public function setCompany(\PL\CompanyBundle\Entity\Company $company) {
$this->company = $company;
}
public function getCompany() {
return $this->company;
}
public function setBusinessCase($business_case) {
$this->business_case = $business_case;
}
public function getBusinessCase() {
return $this->business_case;
}
public function setChargeStatus($charge_status) {
$this->charge_status = $charge_status;
}
public function getChargeStatus() {
return $this->charge_status;
}
public function setETA($eta) {
$this->eta = $eta;
}
public function getETA() {
return $this->eta;
}
public function setETD($etd) {
$this->etd = $etd;
}
public function getETD() {
return $this->etd;
}
public function setTransportMedia($transport_media) {
$this->transport_media = $transport_media;
}
public function getTransportMedia() {
return $this->transport_media;
}
public function setIncoterm($incoterm) {
$this->incoterm = $incoterm;
}
public function getIncoterm() {
return $this->incoterm;
}
public function setComments($comments) {
$this->comments = $comments;
}
public function getComments() {
return $this->comments;
}
public function setMedias(\Application\Sonata\MediaBundle\Entity\Media $media) {
$this->medias[] = $media;
}
public function addMedia(\Application\Sonata\MediaBundle\Entity\Media $media) {
$this->medias[] = $media;
}
public function getMedias() {
return $this->medias;
}
}
\PL\CompanyBundle\Entity\Company.php
<?php
namespace PL\CompanyBundle\Entity;
use Doctrine\ORM\Mapping as ORM;
use Gedmo\Mapping\Annotation as Gedmo;
/**
* #ORM\Entity
* #ORM\Table(name="company")
*/
class Company {
/**
* #ORM\Id
* #ORM\Column(type="integer")
* #ORM\GeneratedValue(strategy="AUTO")
*/
protected $id;
/**
* #ORM\Column(type="string", length=30, unique=true, nullable=false)
*/
protected $name;
/**
* #Gedmo\Timestampable(on="create")
* #ORM\Column(name="register_date", type="datetime")
*/
protected $created_on;
/**
* #ORM\Column(type="string", length=45)
*/
protected $country;
/**
* #ORM\ManyToMany(targetEntity="Application\Sonata\UserBundle\Entity\User", mappedBy="companies")
*/
protected $users;
public function __construct() {
$this->users = new \Doctrine\Common\Collections\ArrayCollection();
}
public function getId() {
return $this->id;
}
public function setName($name) {
$this->name = $name;
}
public function getName() {
return $this->name;
}
public function setCountry($country) {
$this->country = $country;
}
public function getCountry() {
return $this->country;
}
public function setCreatedOn($created_on) {
$this->created_on = $created_on;
}
public function getCreatedOn() {
return $this->created_on;
}
public function __toString() {
return $this->name;
}
}
\Application\Sonata\MediaBundle\Entity\Media.php
<?php
namespace Application\Sonata\MediaBundle\Entity;
use Sonata\MediaBundle\Entity\BaseMedia as BaseMedia;
use Doctrine\ORM\Mapping as ORM;
class Media extends BaseMedia {
/**
* #var integer $id
*/
protected $id;
/**
* #ORM\ManyToMany(targetEntity="PL\OrderBundle\Entity\Order", inversedBy="medias")
* #ORM\JoinTable(name="order_has_media__media",
* joinColumns={#ORM\JoinColumn(name="media__media_id", referencedColumnName="id")},
* inverseJoinColumns={#ORM\JoinColumn(name="order_no_order", referencedColumnName="no_order")}
* )
*/
protected $orders;
public function __construct() {
$this->orders = new \Doctrine\Common\Collections\ArrayCollection();
}
/**
* Get id
*
* #return integer $id
*/
public function getId() {
return $this->id;
}
public function setOrders(\PL\OrderBundle\Entity\Order $order) {
$this->orders[] = $order;
}
public function getOrders() {
return $this->orders;
}
}

Answer 1

for starters, When using bi-directional ManyToOnes and OneToManys you must have inversedBy and a matching mappedBy. in your example:
/**
* #ORM\ManyToOne(targetEntity="PL\CompanyBundle\Entity\Company", inversedBy="id")
*/
protected $company;
the inversedBy you have is basically telling doctrine that the id field (which is your primary key) of your company is a foreign key to your order entity, which is incorrect. you need to have in orders:
/**
* #ORM\ManyToOne(targetEntity="PL\CompanyBundle\Entity\Company", inversedBy="orders")
*/
protected $company;
in company:
/**
* #ORM\OneToMany(targetEntity="PL\OrderBundle\Entity\Order", mappedBy="company")
*/
private $orders;
just follow the docs:
http://docs.doctrine-project.org/en/2.0.x/reference/association-mapping.html