Doctrine2 getters for associations - php

Question

I have 2 classes:
Company:
class ComCompany
{
/**
* #var integer
*
* #ORM\Column(name="cmp_id", type="integer")
* #ORM\Id
* #ORM\GeneratedValue(strategy="IDENTITY")
*/
private $cmpId;
/**
* #var string
*
* #ORM\Column(name="cmp_name", type="string", length=100, nullable=true)
*/
private $cmpName;
/**
* #var integer
*
* #ORM\Column(name="cmp_code", type="integer", nullable=true)
*/
private $cmpCode;
/**
* #var \Catalog\WebBundle\Entity\ComCity
*
* #ORM\ManyToOne(targetEntity="Catalog\WebBundle\Entity\ComCity")
* #ORM\JoinColumns({
* #ORM\JoinColumn(name="cmp_city", referencedColumnName="cit_id")
* })
*/
private $cmpCity;
public function getCmpName()
{
return $this->cmpName;
}
public function getCmpCode()
{
return $this->cmpCode;
}
public function getCmpCity()
{
return $this->cmpCity;
}
}
And city
class ComCity
{
/**
* #var integer
*
* #ORM\Column(name="cit_id", type="integer")
* #ORM\Id
* #ORM\GeneratedValue(strategy="IDENTITY")
*/
private $citId;
/**
* #var string
*
* #ORM\Column(name="cit_name", type="string", length=255, nullable=true)
*/
private $citName;
public function getCitId()
{
return $this->citId;
}
public function getCitName()
{
return $this->citName;
}
}
This 2 tables have associations Company.comCity = City.citId
How to add getter method to ComCompany class to get City.citName ?
I have foreign keys and Entity is generated properly, but there not method for get citName from Company class

Answer 1

Just add the following code to your ComCompany class
public function getCityName()
{
return $this->cmpCity->getCitName();
}

Answer 2

You don't need no this getter method while you already have it in ComCity class. Because adding it (like answer suggested) is making duplicate code. You should use
$company->getCmpCity()->getCitName()
instead
And also: https://en.wikipedia.org/wiki/Don%27t_repeat_yourself

Answer 3

Both answers provided are absolutely correct. However, take into account that if you're using lazy loading an extra query will be triggered each time you call getCityName unless you use a JOIN in your DQL/Query Builder.
This can have terrible performance issues if you call getCityName in a loop so I thought it was worth mentioning it.