Accessing Related Entities in Symfony2 - php

Question

I have a View entity that references an associated entity called ViewVersion. But if I name the variable anything other than viewVersion, e.g. just simple version, then I get an error:
Neither the property "viewVersion" nor one of the methods "getViewVersion()", "isViewVersion()", "hasViewVersion()", "__get()" exist and have public access in class "Gutensite\CmsBundle\Entity\View\View".
All the getters and setters are created through php app/console doctrine:generate:entities but they are for getVersion() and not getViewVersion().
Question: So, is there some unspoken rule that associated entities MUST be named the same as their class name?
Entity Definition
/**
* #ORM\Entity
* #ORM\Table(name="view")
* #ORM\Entity(repositoryClass="Gutensite\CmsBundle\Entity\View\ViewRepository")
*/
class View extends Entity\Base {
/**
* #ORM\OneToOne(targetEntity="\Gutensite\CmsBundle\Entity\View\ViewVersion", inversedBy="view", cascade={"persist", "remove"}, orphanRemoval=true)
* #ORM\JoinColumn(name="versionId", referencedColumnName="id")
*/
protected $version;
/**
* #ORM\Column(type="integer", nullable=true)
*/
protected $versionId = NULL;
}

Answer 1

FYI, the variables for associated entities can be whatever you want.
This was caused by a predefined formType still referencing "viewVersion". The first variable in a form $builder->add() is a reference to the specific variable in the entity. I had viewVersion listed there still, and when I audited my code, I assumed it was just a generic reference (without any requirement) or possibly a reference to the Entity class, so I didn't change it:
$builder->add('viewVersion', new ViewVersionType(), array(
'label' => false
));
The SOLUTION to this problem was to change viewVersion to version so that it references an actual variable on the entity. Obviously...
$builder->add('version', new ViewVersionType(), array(
'label' => false
));