我在创建自定义字段类型时遇到了一些问题。
我所拥有的是一个实体:
Category
Id | Name | parent_id
我最终想要的是一个看起来像这样的选择字段:
Category 1
- SubCategory 1
- SubCategory 2
Category 2
- Subcategory 3
- SubCategory 4
Category 3
Category 4
所以我的方法是创建一个从CategoryRepository返回函数的实体字段。像这样:
$builder->add('category', 'entity', array(
'class' => "AcmeAppBundle:Category",
"property" => "Name",
'query_builder' => function (\path\to\CategoryRepository $repository)
{
return $repository->getOrderedCategories();
}
)
存储库包含:
class CategoryRepository extends EntityRepository
{
public function getCategories()
{
return $this->getEntityManager()
->createQuery('SELECT u FROM AcmeAppBundle:Category u WHERE u.parent is NULL ORDER BY u.priority DESC')
->getResult();
}
public function getOrderedCategories()
{
//get the Parent-"Nodes"
$entity = $this->getCategories();
$arr = array();
foreach ($entity as $cat) {
$arr[]=$cat;
foreach ($cat->getChildren() as $child)
{
$arr[] = $child;
}
}
}
我当前的错误消息是:
Expected argument of type "Doctrine\ORM\QueryBuilder", "array" given
这是一个好方法吗?还有更好的吗?
编辑:
根据要求:类别实体
/**
* Category
*
* @ORM\Table()
* @ORM\Entity(repositoryClass="Acme\AppBundle\Entity\CategoryRepository")
*/
class Category
{
/**
* @var integer
*
* @ORM\Column(name="id", type="integer")
* @ORM\Id
* @ORM\GeneratedValue(strategy="AUTO")
*/
private $id;
/**
* @var string
*
* @ORM\Column(name="Name", type="string", length=255)
*/
private $name;
/**
* @var integer
*
* @ORM\Column(name="Priority", type="integer", nullable=true)
*
*/
private $priority;
/**
* @ORM\OneToMany(targetEntity="Phrase", mappedBy="category")
*/
protected $phrases;
/**
* @ORM\OneToMany(targetEntity="Category", mappedBy="parent")
**/
protected $children;
/**
* @ORM\ManyToOne(targetEntity="Category", inversedBy="children")
* @ORM\JoinColumn(name="parent_id", referencedColumnName="id")
**/
protected $parent;
public function __construct() {
$this->children = new ArrayCollection();
}
public function getChildren()
{
return $this->children;
}
public function getParent()
{
return $this->parent;
}
public function setParent($parent)
{
if($parent -> getParent() == NULL)
{
$this->parent = $parent;
}
}
public function getPhrases()
{
return $this->phrases;
}
...some Setters&Getters
答案 0 :(得分:2)
实体字段类型中的'query_builder'选项必须返回QueryBuilder 实例,而不是$ queryBuilder-> getQuery() - > getResult()。 (在你的情况下是一个数组)
'query_builder' => function (\path\to\CategoryRepository $repository)
{
return $repository->createQueryBuilder('category')
->where('category.parent is null')
->leftJoin('category.children', 'child', 'WITH', 'child.parent = category')
->orderBy('category.priority', 'DESC');
}
尝试为您的类别实现树结构?给Gedmo的Tree分机一个镜头:)