Question

我使用的是ZF2版本2.5.0和教条版本~~ 2.5

我有三个实体，即事件，排名和国家如下：

<?php
namespace SampleProject\Entity;

use Doctrine\Common\Collections\ArrayCollection;
use Doctrine\ORM\Mapping as ORM;
use SampleProject\Entity\Country;
use SampleProject\Entity\Ranking;

class Event
{
    /**
     *
     * @ORM\Id
     * @ORM\Column(name="eventID", type="integer", precision=0, nullable=false)
     * @var int $eventID
     */
    protected $eventID;

    /**
     * @ORM\Column(name="name", type="string", length=50, precision=0, nullable=false)
     * @var string $name
     */
    protected $name;

    /**
     * @ORM\OneToMany(targetEntity="SampleProject\Entity\Ranking", mappedBy="event")
     * @var ArrayCollection $rankings
     */
    protected $rankings;

    /**
     * @ORM\ManyToOne(targetEntity="SampleProject\Entity\Country", inversedBy="events", fetch="EXTRA_LAZY", cascade={"detach"})
     * @ORM\JoinColumn(name="countryIso", referencedColumnName="countryIso", nullable=false)
     * @var \SampleProject\Entity\Country $country
     */
    protected $country;

    /**
     * Initializes doctrine collections, called from constructor in entity class
     */
    protected function initializeCollections()
    {
        $this->rankings = new ArrayCollection();
    }

    public function setEventID($eventID)
    {
        $this->eventID = (int)$eventID;

        return $this;
    }

    public function getEventID()
    {
        return $this->eventID;
    }

    public function setName($name)
    {
        $this->name = (string)$name;

        return $this;
    }

    public function getName()
    {
        return $this->name;
    }

    public function setCountry(Country $country)
    {
        $this->country = $country;

        return $this;
    }

    public function getCountry()
    {
        return $this->country;
    }

    public function addRanking(Ranking $ranking)
    {
        $this->rankings[] = $ranking;

        return $this;
    }

    public function getRankings()
    {
        return $this->rankings;
    }
}
?>

<?php
namespace SampleProject\Country;

use SampleProject\Entity\Event;
use Doctrine\Common\Collections\ArrayCollection;
use Doctrine\ORM\Mapping as ORM;

class Country
{
    /**
     *
     * @ORM\Id
     * @ORM\Column(name="countryIso", type="string", length=3, precision=0, nullable=false)
     * @var string $countryIso
     */
    protected $countryIso;

    /**
     * @ORM\Column(name="name", type="string", length=50, precision=0, nullable=false)
     * @var string $name
     */
    protected $name;

    /**
     * @ORM\OneToMany(targetEntity="SampleProject\Entity\Event", mappedBy="country", fetch="EXTRA_LAZY")
     * @var ArrayCollection $events
     */
    protected $events;

    /**
     * Initializes doctrine collections, called from constructor in entity class
     */
    protected function initializeCollections()
    {
        $this->events = new ArrayCollection();
    }

    public function setCountryIso($countryIso)
    {
        $this->countryIso = (string) $countryIso;

        return $this;
    }

    public function getCountryIso()
    {
        return $this->countryIso;
    }

    public function setName($name)
    {
        $this->name = (string) $name;

        return $this;
    }

    public function getName()
    {
        return $this->name;
    }

    public function addEvent(Event $event)
    {
        $this->events->add($event);

        return $this;
    }

    public function getEvents()
    {
        return $this->events;
    }
}
?>

<?php

namespace SampleProject\Ranking;

use Doctrine\ORM\Mapping as ORM;
use SampleProject\Entity\Event;

class Ranking
{
    /**
     * @ORM\Id
     * @ORM\GeneratedValue(strategy="IDENTITY")
     * @ORM\Column(type="integer", precision=0, nullable=false)
     * @var int $rankingID
     */
    protected $rankingID;

    /**
     * @ORM\Column(name="rank", type="integer", precision=0, nullable=true)
     * @var int $rank
     */
    protected $rank;

    /**
     * @ORM\ManyToOne(targetEntity="SampleProject\Entity\Event", inversedBy="rankings", fetch="LAZY")
     * @ORM\JoinColumn(name="eventID", referencedColumnName="eventID", nullable=false)
     * @var \SampleProject\Entity\Event $event
     */
    protected $event;

    /**
     * @ORM\Column(name="locale", type="string", length=5, precision=0, nullable=true)
     * @var string $locale
     */
    protected $locale;

    public function getRankingID()
    {
        return $this->rankingID;
    }

    public function setRank($rank)
    {
        $this->rank = (int) $rank;

        return $this;
    }

    public function getRank()
    {
        return $this->rank;
    }

    public function setEvent(Event $event)
    {
        $this->event = $event;

        return $this;
    }

    public function getEvent()
    {
        return $this->event;
    }

    public function getLocale()
    {
        return $this->locale;
    }

    public function setLocale($locale)
    {
        $this->locale = $locale;
    }
}
?>

一个事件属于一个国家，一个国家可以有多个事件。

一个事件具有多个排名，具体取决于区域设置，即（en，nl等）。

我正在使用ZF2和doctrine按排名按升序排列事件列表。

在内部执行以下查询以显示列出的事件：

SELECT a0_.name AS name_3, a0_.countryIso AS countryIso_37, COALESCE(a1_.rank, 99999) AS sclr_34 
FROM Event a0_ 
LEFT JOIN Ranking a1_ ON a0_.eventID = a1_.eventID AND (a1_.locale = 'en' OR a1_.locale IS NULL) 
INNER JOIN Country a2_ ON a0_.countryIso = a2_.countryIso
GROUP BY a0_.eventID
ORDER BY sclr_34 ASC, a0_.name ASC

所以结果如下：

event1 BEL 1
event2 AUS 2
event3 AUS 3
event4 AUS 4
event5 NLD 5
event6 NLD 6
event7 ESP 7

但是现在，我希望每个国家/地区显示每个事件的事件。所以输出就像：

event1 BEL 1
event2 AUS 2
event5 NLD 5
event7 ESP 7

所以，我相信查询现在如下：

SELECT * FROM (
SELECT a0_.name AS name_3, a0_.countryIso AS countryIso_37, COALESCE(a1_.rank, 99999) AS sclr_34 
FROM Event a0_ 
LEFT JOIN Ranking a1_ ON a0_.eventID = a1_.eventID AND (a1_.locale = 'en' OR a1_.locale IS NULL) 
INNER JOIN Country a2_ ON a0_.countryIso = a2_.countryIso
GROUP BY a0_.eventID
ORDER BY sclr_34 ASC, a0_.name ASC
) as t 
GROUP BY t.countryIso_37 ORDER BY t.sclr_34 ASC limit 6;

但是，对于ZF2和学说，我无法准备上述查询。

如何使用ZF2和doctrine实现这一目标？

无法使用ZF2和doctrine在from子句中添加select子查询

0 个答案: