好吧,我真的没有看到这个。这是一个简单的页面,我尝试在其中显示联接查询的结果。
这是控制器代码:
public function pageApproachUpdateAction($pageId)
{
$em=$this->getDoctrine()->getEntityManager();
$pageWithMapItems = $em->getRepository('bndmyBundle:Page')->getPageWithMapItems($pageId);
return $this->render('bndmyBundle:test.html.twig', array(
'pageWithMapItems' => $pageWithMapItems
));
这是查询:
public function getPageWithMapItems($pageId) {
$qb = $this->createQueryBuilder('p')
->leftJoin('p.mapItems', 'm')
->where('p.id = :pageId')
->setParameter('pageId', $pageId)
->addSelect('m');
return $qb->getQuery()
->getSingleResult();
}
这是树枝代码:
<body>
{% for mapitem in pageWithMapItems %}
item {{mapitem.id}}<br/>
{% else %}
No result
{% endfor %}
</body>
这是页面实体:
<?php
namespace bndmyBundleEntity;
use DoctrineORMMapping as ORM;
/**
* bndmyBundleEntityPage
*
* @ORMTable()
* @ORMEntity(repositoryClass="bndmyBundleEntityPageRepository")
*/
class Page
{
/**
* @var integer $id
*
* @ORMColumn(name="id", type="integer")
* @ORMId
* @ORMGeneratedValue(strategy="AUTO")
*/
private $id;
/**
* @ORMOneToMany(targetEntity="bndmyBundleEntityRoute", mappedBy="page")
*/
private $routes;
/**
* @ORMOneToMany(targetEntity="bndmyBundleEntityMapItem", mappedBy="page")
*/
private $mapItems;
/**
* @var smallint $number
*
* @ORMColumn(name="number", type="smallint")
*/
private $number;
/**
* @var string $background
*
* @ORMColumn(name="background", type="string", length=255, nullable="true")
*/
private $background;
/**
* @var string $type
*
* @ORMColumn(name="type", type="string", length=30)
*/
private $type;
/**
* @var string $description
*
* @ORMColumn(name="description", type="text", nullable="true")
*/
private $description;
/**
* Get id
*
* @return integer
*/
public function getId()
{
return $this->id;
}
/**
* Set background
*
* @param string $background
*/
public function setBackground($background)
{
$this->background = $background;
}
/**
* Get background
*
* @return string
*/
public function getBackground()
{
return $this->background;
}
/**
* Set type
*
* @param string $type
*/
public function setType($type)
{
$this->type = $type;
}
/**
* Get type
*
* @return string
*/
public function getType()
{
return $this->type;
}
public function __construct()
{
$this->routes = new DoctrineCommonCollectionsArrayCollection();
$this->mapItems = new DoctrineCommonCollectionsArrayCollection();
}
/**
* Add routes
*
* @param bndmyBundleEntityRoute $routes
*/
public function addRoute(bndmyBundleEntityRoute $routes)
{
$this->routes[] = $routes;
}
/**
* Get routes
*
* @return DoctrineCommonCollectionsCollection
*/
public function getRoutes()
{
return $this->routes;
}
/**
* Set number
*
* @param smallint $number
*/
public function setNumber($number)
{
$this->number = $number;
}
/**
* Get number
*
* @return smallint
*/
public function getNumber()
{
return $this->number;
}
/**
* Add mapItems
*
* @param bndmyBundleEntityMapItem $mapItems
*/
public function addMapItem(bndmyBundleEntityMapItem $mapItems)
{
$this->mapItems[] = $mapItems;
}
/**
* Get mapItems
*
* @return DoctrineCommonCollectionsCollection
*/
public function getMapItems()
{
return $this->mapItems;
}
/**
* Set description
*
* @param text $description
*/
public function setDescription($description)
{
$this->description = $description;
}
/**
* Get description
*
* @return text
*/
public function getDescription()
{
return $this->description;
}
}
和地图项实体:
namespace bndmyBundleEntity;
use DoctrineORMMapping as ORM;
/**
* bndmyBundleEntityMapItem
*
* @ORMTable()
* @ORMEntity(repositoryClass="bndmyBundleEntityMapItemRepository")
*/
class MapItem
{
/**
* @var integer $id
*
* @ORMColumn(name="id", type="integer")
* @ORMId
* @ORMGeneratedValue(strategy="AUTO")
*/
private $id;
/**
* @ORMManyToOne(targetEntity="bndmyBundleEntityPage", inversedBy="mapItems")
* @ORMJoinColumn(nullable=false)
*/
private $page;
/**
* @var string $type
*
* @ORMColumn(name="type", type="string", length=255)
*/
private $type;
/**
* @var string $latlng
*
* @ORMColumn(name="latlng", type="text")
*/
private $latlng;
/**
* @var string $description
*
* @ORMColumn(name="description", type="string", length=255)
*/
private $description;
/**
* Get id
*
* @return integer
*/
public function getId()
{
return $this->id;
}
/**
* Set type
*
* @param string $type
*/
public function setType($type)
{
$this->type = $type;
}
/**
* Get type
*
* @return string
*/
public function getType()
{
return $this->type;
}
/**
* Set latlng
*
* @param string $latlng
*/
public function setLatlng($latlng)
{
$this->latlng = $latlng;
}
/**
* Get latlng
*
* @return string
*/
public function getLatlng()
{
return $this->latlng;
}
/**
* Set description
*
* @param string $description
*/
public function setDescription($description)
{
$this->description = $description;
}
/**
* Get description
*
* @return string
*/
public function getDescription()
{
return $this->description;
}
/**
* Set page
*
* @param bndmyBundleEntityPage $page
*/
public function setPage(bndmyBundleEntityPage $page)
{
$this->page = $page;
}
/**
* Get page
*
* @return bndmyBundleEntityPage
*/
public function getPage()
{
return $this->page;
}
}
不显示任何结果,但应该有一个!
我没有任何例外,我猜没有错别字错误
我检查了分析器以读取执行的实际查询;我用PhpMyAdmin测试了它们,没有一个没有结果。
这是一个非常简单和基本的情况。那么,我做错了什么?谢谢:)
所以问题是你的mapItems上有一对多,所以doctrine会给你一个arrayCollection。
您的mapItems没有显示在twig中,因为您必须在pageWithMapItems.mapItems上进行for循环,如果您直接在pageWithMapItems上执行此操作,它将不起作用,因为您的pageWithMapItems变量包含页面的un对象而不是数组。
所以这应该有效:
<body>
{% for mapitem in pageWithMapItems.mapItems %}
item {{mapitem.id}}<br/>
{% else %}
No result
{% endfor %}
</body>
希望我清楚!