Doctrine Query Builder for entities with Join Table - symfony

Question

User ---[OneToMany]---> AcquiredSkill ---[ManyToOne]---> Skill
I'm having problems with creating a query using query builder in doctrine. Can someone help me convert this mysql query to a doctrine query using query builder?
SELECT u.*, s.*
FROM `user` u
Join `acquired_skill` ac ON ac.user_id = u.user_id
Join `skill` s ON ac.skill_id = s.skill_id
Tables
user
- user_id
- name
skill
- skill_id
- skill_name
acquired_skill
- as_id
- skill_id
- user_id
So far, this is my query but it lacks the join between the skills.
createQueryBuilder('u')
->select('u.user_id', 'u.name')
->getQuery()
->getResult();

Answer 1

Your relation seems like you have many-to-many association between user and skills you can set your entities to setup this relation like user entity will point to skill entity in a many-to-many way
User Entity
/**
* #ORM\ManyToMany(targetEntity="Namespace\YourBundle\Entity\Skill", cascade={"persist"})
* #ORM\JoinTable(name="acquired_skill",
* joinColumns={#ORM\JoinColumn(name="user_id", referencedColumnName="id")},
* inverseJoinColumns={#ORM\JoinColumn(name="skill_id", referencedColumnName="id")}
* )
*/
private $skills;
Skill Entity
/**
*
* #ORM\ManyToMany(targetEntity="Namespace\YourBundle\Entity\User", mappedBy="skills")
*/
private $user;
Now in query builder you can join your user entity with skill like below
$this->createQueryBuilder('u')
->select('u')
->innerJoin('u.skills','s')
->getQuery()
->getResult();
for further clarification see docs 22.2.19. #ManyToMany

Answer 2

$qb = $this->entity_manager->createQueryBuilder('u');
$qb->select("*");
$qb->innerJoin('Namespace\YourBundle\Entity\Aq_skill', 'ac', 'WITH', 'ac.user_id = u.user_id');
$qb->innerJoin('Namespace\YourBundle\Entity\skill', 's', 'WITH', 'ac.skill_id = s.skill_id');
$result = $qb->getQuery()->getArrayResult();