Question

我有这样的学说实体：

<?php

namespace App\Entity;
use Doctrine\Common\Collections\ArrayCollection;
/**
 * @Entity(repositoryClass="App\Repository\Page")
 * @Table(name="page")

 */
class Page
{
    /**
     * @Id @Column(type="integer", name="p_id")
     * @GeneratedValue
     */
    private $p_id;
    /** @Column(type="string", name="p_title") */
    private $p_title;
    /** @Column(type="datetime", name="p_created") */
    private $p_created_at;
    /** @Column(type="datetime", name="p_updated_at") */
    private $p_updated_at;
    /** @Column(type="text", name="p_abstract") */
    private $p_abstract;
     /** @Column(type="text", name="p_fulltext", nullable=false) */
    private $p_fulltext;
     /** @Column(type="string", name="p_author", nullable=true) */
    private $p_author;
     /** @Column(type="string", name="p_url",nullable=true) */
    private $p_url;
     /** @Column(type="string", name="p_meta_title",nullable=true) */
    private $p_meta_title;
     /** @Column(type="string", name="p_meta_keywords",nullable=true) */
    private $p_meta_keywords;
     /** @Column(type="string", name="p_meta_description",nullable=true) */
    private $p_meta_description;
      /** @Column(type="string", name="p_status") */
    private $p_status; 
    /**
     * @ManyToOne(targetEntity="User", inversedBy="pages")
     * @JoinColumn(name="p_u_id", referencedColumnName="u_id")
    */
    private $user;
    /**
     * @OneToMany(targetEntity="App\Entity\Page\Media", mappedBy="pages")
     * @var \Doctrine\Common\Collections\Collection
     */
    protected $pageMedia;
      /**
     * @OneToMany(targetEntity="App\Entity\Page\Basket", mappedBy="baskets")
     * @var \Doctrine\Common\Collections\Collection
     */
    protected $pageBasket;

    public function __construct()
    {
        $this->pageMedia = new App\Entity\Page\Media();
        $this->medias = new ArrayCollection();
    }
    public function __get($property)
    {
        return $this->property;
    }
    public function __set($property,$value)
    {
        $this->$property = $value;
    }
    public function setUser(user $user)
    {
        $this->user = $user;
    }
    public function setMedia(media $media)
    {
        $this->pageMedia->setPageAndMedia($this,$media);
    }
    /**
     * Set Page Values
     * @var array $values
     */
    public function setPageProperties(array $values)
    {
        $this->p_updated_at =  new \DateTime("now");
        $this->p_title = $values['p_title'];
        $this->p_abstract = $values['p_abstract'];
        $this->p_meta_title = $values['p_meta_title'];
        $this->p_meta_keywords = $values['p_meta_keywords'];
        $this->p_meta_description = $values['p_meta_description'];
        $this->p_url = $values['p_url'];
        $this->p_fulltext = $values['p_abstract'];
        $this->p_author = '';
        $this->p_status = 1;

    }
}

?>


<?php
namespace App\Entity\Page;
use Doctrine\Common\Collections\ArrayCollection;

/**
 * @Entity
 * @Table(name="page_basket")

 */
class Basket
{
    /**
     * @Id @Column(type="integer", name="pb_id")
     * @GeneratedValue
     */
    private $pb_id;
    /**
     * @ManyToOne(targetEntity="App\Entity\Page")
     * @JoinColumn(name="pb_p_id", referencedColumnName="p_id")
    */
    private $pages;
    /**
     * @ManyToOne(targetEntity="App\Entity\Basket",inversedBy="pageBasket")
     * @JoinColumn(name="pb_b_id", referencedColumnName="b_id")
    */
    private $baskets;
    public function __construct()
    {
        $this->baskets = new ArrayCollection();
        $this->pages = new ArrayCollection();
    }
    public function __get($property)
    {
        return $this->property;
    }
    public function __set($property,$value)
    {
        $this->$property = $value;
    }
    /**
     * 
     */
    public function setPageAnBasket(page $page,basket $basket) 
    {
        $this->pages[] = $page;
        $this->baskets[] =  $basket;
    }

}

?>

存储库中的方法：

<?php
namespace App\Repository;

use Doctrine\ORM\EntityRepository;

class Page extends EntityRepository
{
    /**
     * Find pages by basket Id
     * @var int $basketId
     * @return array $pages[]
     */
    public function findPagesByBasket($basketId)
    {

        $dql = $this->_em->createQueryBuilder();
        $dql->select('u')
            ->from('App\Entity\Page', 'p')
            ->leftJoin('p.App\Entity\Page\Basket','pb_b_id = p_id')


  ->andWhere('pb_b_id = :basketId')
        ->setParameter('basketId', $basketId);

    return $dql->getQuery()->getArrayResult();    
}

}

但是当我想要运行dql时，我得到了：

string '[Semantical Error] line 0, col 67 near 'pb_b_id = p_id': Error: Class App\Entity\Page has no association named App\Entity\Page\Basket'

我做错了因为我不想使用多对多的关系因为我想在连接表中有其他字段。

Answer 1

我需要一个很好的借口让自己成为一个简单的测试用例，所以在这里。

namespace Entity;
use Doctrine\Common\Collections\ArrayCollection;

/**
 * @Entity()
 * @Table(name="page")
 */
class Page
{
    /**
     * @Id @Column(type="integer", name="p_id")
     * @GeneratedValue
     */
    private $id;

    /**
     * @OneToMany(targetEntity="Entity\PageBasket", mappedBy="page")
     */
    protected $pageBaskets;

    public function __construct()
    {
        $this->pageBaskets = new ArrayCollection();
    }
    public function getId()          { return $this->id; }
    public function getPageBaskets() { return $this->pageBaskets; }
}

namespace Entity;
use Doctrine\Common\Collections\ArrayCollection;

/**
 * @Entity
 * @Table(name="page_basket")
 */
class PageBasket
{
    /**
     * @Id @Column(type="integer", name="pb_id")
     * @GeneratedValue
     */
    private $id;

    /**
     * @ManyToOne(targetEntity="Entity\Page")
     * @JoinColumn(name="page_id", referencedColumnName="p_id")
    */
    private $page;

    public function setPage($page)
    {
        $this->page = $page;
    }
    public function getId() { return $this->id; }

}

一个有效的测试查询

protected function testQuery()
{
    $basketId = 1;

    $em = $this->getEntityManager();
    $qb = $em->createQueryBuilder();

    $qb->addSelect('page');
    $qb->addSelect('pageBasket');

    $qb->from('\Entity\Page','page');
    $qb->leftJoin('page.pageBaskets','pageBasket');

    $qb->andWhere($qb->expr()->in('pageBasket.id',$basketId));

    $query = $qb->getQuery();
    $results = $query->getResult();

    $page = $results[0];
    $pageBaskets = $page->getPageBaskets();
    $pageBasket = $pageBaskets[0];

    echo 'Result Count ' . count($results) . "\n";
    echo 'Page ID ' . $page->getId() . "\n";
    echo 'Page Basket ID ' . $pageBasket->getId() . "\n";
    echo $query->getSQL() . "\n";
}

生成的sql看起来像：

SELECT p0_.p_id AS p_id0, p1_.pb_id AS pb_id1, p1_.page_id AS page_id2 
FROM page p0_ 
LEFT JOIN page_basket p1_ ON p0_.p_id = p1_.page_id 
WHERE p1_.pb_id IN (1)

Doctrine 2模型一对多多对一查询

1 个答案: