Mapping doesn't work ORM - symfony

Question

I have this example:
Log.php
<?php
// src/Mailing/MailingBundle/Entity/Log.php
namespace Mailing\MailingBundle\Entity;
use Doctrine\ORM\Mapping as ORM;
/**
* #ORM\Entity
* #ORM\Table(name="log")
*/
class Log
{
/**
* #ORM\Id
* #ORM\Column(type="integer")
* #ORM\GeneratedValue(strategy="AUTO")
*/
protected $id;
/**
* #ORM\Column(type="string", length=20)
*/
protected $action;
public function getAction() {
return $this->action;
}
public function setAction($action) {
$this->action = $action;
}
/**
* #ORM\Column(type="datetime")
*/
protected $date;
public function getDate() {
return $this->date;
}
public function setDate($date) {
$this->date = $date;
}
/**
* #ORM\Column(type="integer", name="mail_id")
* #ORM\oneToOne(targetEntity="Mail")
*/
protected $mail;
public function getMail() {
return $this->mail;
}
public function setMail($mail) {
$this->mail = $mail;
}
/**
* #ORM\Column(type="integer", name="template_id")
* #ORM\oneToOne(targetEntity="Template")
*/
protected $template;
public function getTemplate() {
return $this->template;
}
public function setTemplate($template) {
$this->template = $template;
}
}
Mail.php
<?php
// src/Mailing/MailingBundle/Entity/Mail.php
namespace Mailing\MailingBundle\Entity;
use Doctrine\ORM\Mapping as ORM;
/**
* #ORM\Entity
* #ORM\Table(name="mail")
*/
class Mail
{
/**
* #ORM\Id
* #ORM\Column(type="integer")
* #ORM\GeneratedValue(strategy="AUTO")
*/
protected $id;
public function getId() {
return $this->id;
}
/**
* #ORM\Column(type="string", length=200)
*/
protected $address;
/**
*
* #return type
*/
public function getAddress() {
return $this->address;
}
/**
*
* #param \Mailing\MailingBundle\Entity\Mail $surname
*/
public function setAddress($address)
{
$this->address = $address;
}
/**
* #ORM\Column(type="string", length=200)
*/
protected $name;
/**
*
* #return type
*/
public function getName() {
return $this->name;
}
/**
*
* #param \Mailing\MailingBundle\Entity\Mail $surname
*/
public function setName($name)
{
$this->name = $name;
}
/**
* #ORM\Column(type="string", length=200)
*/
protected $surname;
/**
*
* #return type
*/
public function getSurname() {
return $this->surname;
}
/**
*
* #param \Mailing\MailingBundle\Entity\Mail $surname
*/
public function setSurname($surname)
{
$this->surname = $surname;
}
/**
* #ORM\Column(type="boolean")
*/
protected $subscribed;
/**
*
* #return type
*/
public function getSubscribed() {
return $this->subscribed;
}
/**
*
* #param \Mailing\MailingBundle\Entity\Mail $subscribed
*/
public function setSubscribed($subscribed)
{
$this->subscribed = $subscribed;
}
/**
* #ORM\manyToMany(targetEntity="Inventory", inversedBy="articles")
* #ORM\joinTable(
* name="mail_inventory",
* joinColumns={
* #ORM\joinColumn(name="mail_id", referencedColumnName="id")
* },
* inverseJoinColumns={
* #ORM\joinColumn(name="iventory_id", referencedColumnName="id")
* }
* )
*/
protected $inventories;
/**
* #return DoctrineCommonCollectionsCollection;
*/
public function getInventories()
{
return $this->inventories;
}
/**
* #ORM\Column(type="string", length=128)
*/
protected $hash;
public function getHash() {
return $this->hash;
}
public function setHash($hash) {
$this->hash = $hash;
}
}
LogController.php
<?php
// src/Mailing/MailingBundle/Controller/LogController.php
namespace Mailing\MailingBundle\Controller;
use Symfony\Bundle\FrameworkBundle\Controller\Controller;
class LogController extends Controller
{
public function indexAction()
{
$em = $this->getDoctrine()->getManager();
$records = $em->getRepository('MailingBundle:Log')->findAll();
return $this->render('MailingBundle:Log:index.html.twig', array('logs' =>$records));
}
}
Template:
{# src/Mailing/MailingBundle/Resources/views/Log/index.html.twig #}
{% extends 'MailingBundle::layout.html.twig' %}
{% block title %}
Log
{% endblock %}
{% block headline %}
Log
{% endblock %}
{% block content %}
{% if logs %}
<table>
<tr><th>Date</th><th>E-mail</th><th>Template</th></tr>
{% for log in logs %}
<tr><td>{{ log.date|date('H:i j.n.Y') }}</td><td>{{ log.action }}</td><td>{{ log.mail.address }}</td><td>{{ log.template.name }}</td></tr>
{% endfor %}
</table>
{% else %}
No records to show...
{% endif %}
{% endblock %}
It generates this error:
Impossible to access an attribute ("address") on a integer variable ("1") in MailingBundle:Log:index.html.twig at line 17
This is DB Schema
log
id int(11) NO PRI NULL auto_increment
action varchar(20) YES NULL
date datetime YES NULL
mail_id int(11) NO MUL NULL
template_id int(11) YES MUL NULL
mail
Field Type Null Key Default Extra
id int(11) NO PRI NULL auto_increment
address varchar(200) NO NULL
name varchar(200) YES NULL
surname varchar(200) YES NULL
subscribed tinyint(1) YES 1
hash varchar(128) NO NULL
Thank you for help.

Answer 1

According to the documentation: doctrine doc
You were wrong to declare the record:
/**
* #ORM\Column(type="integer", name="mail_id")
* #ORM\oneToOne(targetEntity="Mail")
*/
protected $mail;
instead must be:
/**
* #OneToOne(targetEntity="Mail")
* #JoinColumn(name="mail_id", referencedColumnName="id")
*/
protected $mail;
The same thing for $template.
EDIT:
If you can not make it work you can try the bidirectional association: onetoone bidirectional
Log.php
/**
* #OneToOne(targetEntity="Mail", inversedBy="log")
* #JoinColumn(name="mail_id", referencedColumnName="id")
*/
protected $mail;
Mail.php
/**
* #OneToOne(targetEntity="Log", mappedBy="mail")
**/
private $log;