Doctrine 2 joining table, ManyToOne unidirectional, where tbl2.value = :value - php

Question

I'm trying to figure out how to join two tables, while querying the second table. I thought it was as simple as:
// Within ServerServiceRepository
return $this->createQueryBuilder('ss')
->join(ServiceType::class, 't')
->where('t.serviceTypeName = :name')
->getQuery()
->execute(['name' => $name]);
But turns out, not so much...
The issue is the query is NOT joining the keys (service_type_id on both tables). What's going on here? I have all the OneToMany relationships setup correctly:
/**
* ServerService
*
* #ORM\Table(name="server_services")
* #ORM\Entity(repositoryClass="AppBundle\Repository\ServerServiceRepository")
*/
class ServerService extends AbstractEntity
{
/**
* #var ServiceType
*
* #ORM\Column(name="service_type_id", type="integer", nullable=false)
* #ORM\ManyToOne(targetEntity="AppBundle\Entity\Supportal\ServiceType", fetch="LAZY", inversedBy="serviceTypeId")
* #ORM\JoinColumn(name="service_type_id", referencedColumnName="service_type_id")
*/
private $serviceType;
// [...]
}
/**
* ServiceType
*
* #ORM\Table(name="service_types")
* #ORM\Entity
*/
class ServiceType extends \AppBundle\Entity\AbstractEntity
{
/**
* #var integer
*
* #ORM\Column(name="service_type_id", type="integer", nullable=false)
* #ORM\Id
* #ORM\GeneratedValue(strategy="IDENTITY")
* #ORM\OneToMany(targetEntity="AppBundle\Entity\ServerService", fetch="EXTRA_LAZY", mappedBy="serviceType")
*/
private $serviceTypeId;
/**
* #var string
*
* #ORM\Column(name="service_type_name", type="string", length=255, nullable=true)
*/
private $serviceTypeName;
// [...]
}
I've added / removed the OneToMany relationship from ServiceType to no change. This is really a unidirectional relationship. Per Doctrine's own docs (Chapter 5), ServerType does not require a relationship mapping.
The SQL query is generating a JOIN that's missing the actual keys:
INNER JOIN service_types s1_ ON (s1_.service_type_name = ?)
What am I missing here on Doctrine to get this working right? I've looked at the tutorials. Symofny's example is almost exact what I'm after, except I need to select by "category name" not Product id: https://symfony.com/doc/2.8/doctrine/associations.html
I've got to be missing something so super simple. But I can't for the life of me peg it...
Edit:
I've removed the OneToMany from ServiceType in my code. It's optional. Not needed for this anyway. This is a unidirectional relationship.
I've tried this:
return $this->createQueryBuilder('ss')
->join('ss.serviceType', 't')
->where('t.serviceTypeName = :name')
->getQuery()
->execute(['name' => $name]);
Resulting in this error:
[Semantical Error] line 0, col 85 near 't WHERE t.serviceTypeName': Error: Class AppBundle\Entity\ServerService has no association named serviceType
Solution
The solution was removing the #ORM Column definition. Looks like it's a conflict in the relationship definitions.

Answer 1

First of all, change the ManyToOne docblock definition to:
/**
* #var ServiceType
*
* #ORM\ManyToOne(targetEntity="AppBundle\Entity\Supportal\ServiceType", fetch="LAZY", inversedBy="serverService")
* #ORM\JoinColumn(name="service_type_id", referencedColumnName="service_type_id")
*/
private $serviceType;
Also change the OneToMany, remove line #ORM\OneToMany(targetEntity="AppBundle\Entity\ServerService", fetch="EXTRA_LAZY", mappedBy="serviceType")
Create new field serverService for the OneToMany relation:
/**
*
* #ORM\OneToMany(targetEntity="ServerService", mappedBy="serviceType")
*/
private $serverService;
You should join on the relation field, in this case serviceType. The way you defined the join is like selecting both tables.
Change to:
return $this->createQueryBuilder('ss')
->join('ss.serviceType', 't')
->where('t.serviceTypeName = :name')
->getQuery()
->execute(['name' => $name]);
Since you are applying a condition on the joined result here, using a LEFT JOIN or simply JOIN is the same.
References:
How to Work with Doctrine Associations / Relations
how to do left join in doctrine
Left join ON condition AND other condition syntax in Doctrine