根據symfony2中的角色加載用戶

Question

如何編寫按用戶角色從DB加載所有用戶的請求？ 我使用三個表（用戶，角色和user_role）與多對多關係。

如果你能幫助我寫函數loadUsersByRole（）在UserRepository中，我將非常感謝。

實體\用戶

namespace Kombinator\UserBundle\Entity; 

use Doctrine\ORM\Mapping as ORM; 
use Symfony\Component\Security\Core\User\UserInterface; 
use Doctrine\Common\Collections\ArrayCollection; 

/** 
* Kombinator\UserBundle\Entity\User 
* 
* @ORM\Table(name="kombinator_users") 
* @ORM\Entity(repositoryClass="Kombinator\UserBundle\Entity\UserRepository") 
*/ 
class User implements UserInterface, \Serializable 
{ 
    /** 
    * @ORM\Column(type="integer") 
    * @ORM\Id 
    * @ORM\GeneratedValue(strategy="AUTO") 
    */ 
    private $id; 

    /** 
    * @ORM\Column(type="string", length=25, unique=true) 
    */ 
    private $username; 

    /** 
    * @ORM\ManyToOne(targetEntity="Company") 
    * @ORM\JoinColumn(name="company", referencedColumnName="id") 
    */ 
    protected $company; 

    /** 
    * @ORM\ManyToMany(targetEntity="Role", inversedBy="users") 
    * 
    */ 
    private $roles; 

    public function __construct() 
    { 
     $this->roles = new ArrayCollection(); 
    } 

    public function getRoles() 
    { 
     return $this->roles->toArray(); 
    } 

    public function getRole() 
    { 
     $roles=$this->roles->toArray(); 
     if(isset($roles[0])){return $roles[0];} 
     else{return NULL;} 
    } 
... 

UserRepository

namespace Kombinator\UserBundle\Entity; 

    use Symfony\Component\Security\Core\User\UserInterface; 
    use Symfony\Component\Security\Core\User\UserProviderInterface; 
    use Symfony\Component\Security\Core\Exception\UsernameNotFoundException; 
    use Symfony\Component\Security\Core\Exception\UnsupportedUserException; 
    use Doctrine\ORM\EntityRepository; 
    use Doctrine\ORM\NoResultException; 
    use Doctrine\ORM\Query\ResultSetMappingBuilder; 
    use Kombinator\UserBundle\Controller\Paginator; 
    use Kombinator\UserBundle\Entity\Filter; 
    use Kombinator\UserBundle\Entity\Role; 


    /** 
    * UserRepository 
    */ 
    class UserRepository extends EntityRepository implements UserProviderInterface 
    { 

     public function loadUserByUsername($username) 
     { 
      $q = $this 
       ->createQueryBuilder('u') 
       ->select('u, r') 
       ->leftJoin('u.roles', 'r') 
       ->where('u.email = :email AND u.status = 1') 
       ->setParameter('email', $username) 
       ->getQuery(); 

      try { 
       $user = $q->getSingleResult(); 
      } catch (NoResultException $e) { 
       $message = sprintf('Unable to find an active ... by "%s".',$username); 
       throw new UsernameNotFoundException($message, 0, $e); 
      } 

      return $user; 
     } 


     public function findAllActiveJoinedToCompany($company) 
     { 
      $query = $this->getEntityManager() 
       ->createQuery(' 
        SELECT p, c FROM KombinatorUserBundle:User p 
        JOIN p.company c WHERE p.company='.$company); 

      try { 
       return $query; 
      } catch (\Doctrine\ORM\NoResultException $e) { 
       return null; 
      } 
     } 

實體\角色

namespace Kombinator\UserBundle\Entity; 

use Symfony\Component\Security\Core\Role\RoleInterface; 
use Doctrine\Common\Collections\ArrayCollection; 
use Doctrine\ORM\Mapping as ORM; 

/** 
* @ORM\Table(name="kombinator_role") 
* @ORM\Entity() 
*/ 
class Role implements RoleInterface 
{ 
    /** 
    * @ORM\Column(name="id", type="integer") 
    * @ORM\Id() 
    * @ORM\GeneratedValue(strategy="AUTO") 
    */ 
    private $id; 

    /** 
    * @ORM\Column(name="name", type="string", length=30) 
    */ 
    private $name; 

    /** 
    * @ORM\Column(name="role", type="string", length=20, unique=true) 
    */ 
    private $role; 

    /** 
    * @ORM\ManyToMany(targetEntity="User", mappedBy="roles") 
    */ 
    private $users; 

    public function __construct() 
    { 
     $this->users = new ArrayCollection(); 
    } 

    /** 
    * @see RoleInterface 
    */ 
    public function getRole() 
    { 
     return $this->role; 
    } 


    /** 
    * Get id 
    * 
    * @return integer 
    */ 
    public function getId() 
    { 
     return $this->id; 
    } 

    /** 
    * Set name 
    * 
    * @param string $name 
    * @return Role 
    */ 
    public function setName($name) 
    { 
     $this->name = $name; 

     return $this; 
    } 

    /** 
    * Get name 
    * 
    * @return string 
    */ 
    public function getName() 
    { 
     return $this->name; 
    } 

    /** 
    * Set role 
    * 
    * @param string $role 
    * @return Role 
    */ 
    public function setRole($role) 
    { 
     $this->role = $role; 

     return $this; 
    } 

    /** 
    * Add users 
    * 
    * @param \Kombinator\UserBundle\Entity\User $users 
    * @return Role 
    */ 
    public function addUser(\Kombinator\UserBundle\Entity\User $users) 
    { 
     $this->users[] = $users; 

     return $this; 
    } 

    /** 
    * Remove users 
    * 
    * @param \Kombinator\UserBundle\Entity\User $users 
    */ 
    public function removeUser(\Kombinator\UserBundle\Entity\User $users) 
    { 
     $this->users->removeElement($users); 
    } 

    /** 
    * Get users 
    * 
    * @return \Doctrine\Common\Collections\Collection 
    */ 
    public function getUsers() 
    { 
     return $this->users; 
    } 
} 

RoleRepository

namespace Kombinator\UserBundle\Entity; 

use Doctrine\ORM\EntityRepository; 

/** 
* RoleRepository 
*/ 
class RoleRepository extends EntityRepository 
{ 
    public function findAll() 
    { 
     $query = $this->getEntityManager() 
      ->createQuery(' 
       SELECT p FROM KombinatorUserBundle:Role p 
       ORDER BY p.id' 
      ); 

     try { 
      return $query->getResult(); 
     } catch (\Doctrine\ORM\NoResultException $e) { 
      return null; 
     } 
    } 
} 

Answer 1

當許多一對多的關係，參與，你應該在你的查詢中使用MEMBER OF子句：

public function loadUsersByRole($roleId) 
    { 
     $q = $this 
      ->createQueryBuilder('u') 
      ->select('u, r') 
      ->leftJoin('u.roles', 'r') 
      ->where(':roleId MEMBER OF u.roles AND u.status = 1') 
      ->setParameter('roleId', $roleId) 
      ->getQuery(); 

     return $q->getResult(); 
    }