Symfony2 按属性对对象集合进行排序

Question

我有这个实体：

class Categoria {
    /**
     * @ORMId
     * @ORMColumn(type="integer")
     * @ORMGeneratedValue
     */
    protected $id;
    /** @ORMColumn(type="string", length=100) */
    protected $nom;
    /** @ORMColumn(type="string", length=100) */
    protected $slug;
    /** @ORMColumn(type="decimal", precision=3, scale=0) */
    protected $ordre;
    /** @ORMColumn(type="boolean", nullable=true) */
    protected $actiu=FALSE;
    /** @ORMColumn(type="decimal", precision=4, scale=0, nullable=true) */
    protected $enllaç=null;
    /** @ORMOneToMany(targetEntity="LoPatiMenuBundleEntitysubCategoria", mappedBy="categoria", cascade={"persist", "remove"} )*/
     protected $subCategoria; 
public function __construct()
{
    $this->subCategoria = new DoctrineCommonCollectionsArrayCollection();
}
/**
 * Add subCategoria
 *
 * @param LoPatiMenuBundleEntitysubCategoria $subCategoria
 */
public function addsubCategoria(LoPatiMenuBundleEntitysubCategoria $subCategoria)
{
    $this->subCategoria[] = $subCategoria;
}
/**
 * Get subCategoria
 *
 * @return DoctrineCommonCollectionsCollection 
 */
public function getSubCategoria()
{
    return $this->subCategoria;
}

和

class SubCategoria {
/**
 * @ORMId
 * @ORMColumn(type="integer")
 * @ORMGeneratedValue
 */
protected $id;
/** @ORMColumn(type="string", length=100) */
protected $nom;
/** @ORMColumn(type="string", length=100) */
protected $slug;
/** @ORMColumn(type="decimal", precision=3, scale=0) */
protected $ordre;
/** @ORMColumn(type="boolean", nullable=true) */
protected $actiu=FALSE; 
/** @ORMColumn(type="boolean", nullable=true) */
protected $llista=FALSE;
/** @ORMColumn(type="decimal", precision=4, scale=0, nullable=true) */
protected $enllaç=null;
/** @ORMManyToOne(targetEntity="Categoria", inversedBy="subCategoria") */
protected $categoria;

在分类实体中，我想对子分类对象的集合进行排序 $ordre .

我该怎么做？有可能在树枝神庙或实体的定义中做到这一点吗？

谢谢

问候

Answer 1

使用以下注释：

/** 
 * @ORMOneToMany(targetEntity="LoPatiMenuBundleEntitysubCategoria", mappedBy="categoria", cascade={"persist", "remove"} )
 * @ORMOrderBy({"order" = "DESC", "id" = "DESC"})
*/
protected $subCategoria;

。