OneToMany or OneToOne, am I on the right or wrong path?

I have this DB model:  

Then I created these objects (I'll just leave the relationship part as the other is not relevant):

Orders.php

class Orders {
    /**
     * @ORM\ManyToOne(targetEntity="Person", inversedBy="orders")
     * @ORM\JoinColumn(name="person_id", referencedColumnName="id")
     * */
    protected $person;

    public function setPerson(Person $person)
    {
        $this->person = $person;
        return $this;
    }

    public function getPerson()
    {
        return $this->person;
    }

}

      

        
        
        
      

    

Person.php

class Person {
    /**
     * @ORM\OneToMany(targetEntity="NaturalPerson", mappedBy="person")
     * */
    private $naturals;

    /**
     * @ORM\OneToMany(targetEntity="LegalPerson", mappedBy="person")
     * */
    private $legals;

    /**
     * @ORM\OneToMany(targetEntity="Orders", mappedBy="person")
     * */
    private $orders;

    public function __construct()
    {
        $this->naturals = new ArrayCollection();
        $this->legals = new ArrayCollection();
        $this->orders = new ArrayCollection();
    }

    public function getNaturals()
    {
        return $this->naturals;
    }

    public function getLegals()
    {
        return $this->legals;
    }

    public function getOrders()
    {
        return $this->orders;
    }

}

      

        
        
        
      

    

NaturalPerson.php

class NaturalPerson {

    /**
     * @ORM\Id
     * @ORM\ManyToOne(targetEntity="Person", inversedBy="naturals")
     * @ORM\JoinColumn(name="person_id", referencedColumnName="id")
     */
    protected $person;

    /**
     * @ORM\Column(name="identification_type", type="ci_type", nullable=false)
     * @DoctrineAssert\Enum(entity="Tanane\FrontendBundle\DBAL\Types\CIType")
     */
    protected $identification_type;

    /**
     * @ORM\Column(name="ci", type="integer", nullable=false)
     */
    protected $ci;

    public function setPerson(Person $person)
    {
        $this->person = $person;
        return $this;
    }

    public function getPerson()
    {
        return $this->person;
    }

    public function setIdentificationType($identification_type)
    {
        $this->identification_type = $identification_type;
        return $this;
    }

    public function getIdentificationType()
    {
        return $this->identification_type;
    }

    public function setCI($ci)
    {
        $this->ci = $ci;
        return $this;
    }

    public function getCI()
    {
        return $this->ci;
    }

}

      

        
        
        
      

    

I missed LegalPerson

since it is almost the same as NaturalPerson

here is the problem. The display looks good, but how do I get related posts from Orders

?

The idea behind this is for everyone Orders

I need to know to which Person

(Orders) belongs , as well as additional information stored in NaturalPerson

or LegalPerson

depending on person.type

.

See this code:

public function getOrdersAction()
{
    $response = array();
    $em = $this->getDoctrine()->getManager();

    $entities = $em->getRepository("FrontendBundle:Orders")->findAll();

    if (!$entities)
    {
        $response['message'] = "No se encontraron resultados";
    }

    $orders = array();
    foreach ($entities as $entity)
    {

        $personType = $entity->getPerson()->getPersonType();

        $order = array();
        $order[] = $entity->getNickname();

        // Here I'm trying to access to `Naturals` methods from `Orders` 
        if ($personType == 1)
        {
            $order[] = $entity->getPerson()->getNaturals()[0]->getIdentificationType() . $entity->getPerson()->getNaturals()[0]->getCI();
        }
        elseif ($personType == 2)
        {
            $order[] = $entity->getPerson()->getLegals()[0]->getIdentificationType() . $entity->getPerson()->getLegals()[0]->getRIF();
        }

        $orders[] = $order;
    }

    $response['data'] = $orders;
    return new JsonResponse($response);
}

      

        
        
        
      

    

But I am getting this error:

Error: Calling member function getIdentificationType () on a non-object in /var/www/html/tanane/src/Tanane/BackendBundle/Controller/OrderController.php line 115

Maybe my mapping is wrong, since I must have OneToOne

between Person

and NaturalPerson

(and it doesn't sound right to my logic, as DER shows) or maybe not, but then I don't know how to get bound properties for just one entry, I read the docs here and also in here , but they didn't talk about this part, or I don't see it, any advice? ideas? tips?

Trying to use repositories and DQL to solve the problem

I am creating a function in a class Repository

to retrieve the data and it doesn't get complicated as apparently my problem, so I did this:

public function getOrders($person_type = 1)
{
    $qb = $this->getEntityManager()->createQueryBuilder();

    $qb
            ->select('ord.*, ps.*')
            ->from("FrontendBundle:Orders", "ord")
            ->join('FrontendBUndle:Person', 'ps', 'WITH', 'ps.id = ord.person_id')
            ->orderBy('ord.created', 'DESC');

    if ($person_type == 1)
    {
        $qb
                ->select('np.*')
                ->join('FrontendBundle:NaturalPerson', 'np', 'WITH', 'ps.id = np.person'); // Join NaturalPerson table
    }
    elseif ($person_type == 2)
    {
        $qb
                ->select('lp.*')
                ->join('FrontendBundle:LegalPerson', 'lp', 'WITH', 'ps.id = lp.person'); // Join NaturalPerson table
    }

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

      

        
        
        
      

    

I haven't tested it yet, so maybe it won't work, but if the idea is to get more information for both tables, then with this DQL I did how to pass $person_type

which is inside the Person

Table? This gets a little tricky, at least for me.

Running a raw query to see if columns are NULL

I am creating this simple query just to check if the results are NULL

:

SELECT
    ord.id,
    ord.person_id as ord_person_id,
  ord.nickname,
  ps.id,
  ps.description,
  np.person_id as natural_person_id,
  np.identification_type,
    np.ci
FROM
    orders ord
LEFT JOIN person ps ON ord.person_id = ps.id
LEFT JOIN natural_person np ON np.person_id = ps.id
WHERE
    ps.person_type = 1;

      

        
        
        
      

    

And this query returns:

So there are no NULL columns here.

CRUD for creating new orders

// Set Person entity
$entityPerson = new Person();
$person_type === 1 ? $entityPerson->setDescription($orders['nat']['person']['description']) : $entityPerson->setDescription($orders['leg']['person']['description']);
$person_type === 1 ? $entityPerson->setContactPerson($orders['nat']['person']['contact_person']) : $entityPerson->setContactPerson($orders['leg']['person']['contact_person']);
$entityPerson->setPersonType($person_type);

$em->persist($entityPerson);
$em->flush();

...

if ($person_type === 1)
{
    // Set NaturalPerson entity
    $entityNatural = new NaturalPerson();
    $entityNatural->setIdentificationType($orders['nat']['identification_type']);
    $entityNatural->setCI($orders['nat']['ci']);

    $em->persist($entityNatural);
    $em->flush();
}
elseif ($person_type === 2)
{
    // Set LegalPerson entity
    $entityLegal = new LegalPerson();
    $entityLegal->setIdentificationType($orders['leg']['identification_type']);
    $entityLegal->setRIF($orders['leg']['rif']);

    $em->persist($entityLegal);
    $em->flush();
}