Symfony 3.4 entity extra columns in controller response - symfony

Question

I have this entity:
<?php
//namespace
//use ...
class Guide
{
private $id;
//private ...
//getters
//setters
}
?>
In a controller I use the entity manager to retrieve the data of this entity.
$guides= $em->getRepository('AppBundle:Guide')
->findAll();
My entity has 4 parameters: id, name, pages, author.
Is there any way to add two extra parameters, that aren´t in the class declaration and I don´t want in the database, if the entity manager returns for example 3 rows, I want o add two extra values to each row and return the data, for example add two boolean values: ok => true, warning => false.
I have tried this:
foreach($guides as $guide){
$guide->ok=true;
$guide->warning=false;
}
If I dump $guides, I see the two parameters like this:
-id:1
-name:'Guide 1'
-pages:12
-author:'John'
+"ok":true
+"warning":false
But when I use this to send a response:
return new Response($serializer->serialize($guides, 'json'));
The two extra parameters aren´t in the response.

Answer 1

You could add a property to entity and do not tag it as a ORM\Column eg:
<?php
//...
/**
* #ORM\Entity
* #ORM\Table(name="guides")
*/
class Guide
{
/**
* #ORM\Column(type="integer")
* #ORM\Id
* #ORM\GeneratedValue(strategy="AUTO")
*/
private $id;
/**
* #var string
* #ORM\Column(name="title", type="string")
*/
private $name;
public $myAdditionalProperty;
//...
And then set it in your controller:
foreach($guides as $guide){
$guide->myAdditionalProperty = "my amazing value";
}
Then you can serialize your data without having additional column in your table