我正在使用：
要设置树结构，我在Symfony.com [2]上使用了文档，后面是关于GitHub [3]的文档。然后我继续进行树设置 - 使用示例[4]中的树实体，并使用[5]中的代码创建树。
我确实设置了名为Category的树结构（代表类别）。我在树中添加了几个自定义字段：例如is_active表示活动类别。
我使用单独的查询来获取所有Categories和相应的Item计数，但我想在一个组合查询中获取此信息。
是否可以使用DQL在一个查询中获取所有Categories和相应的Item计数？如果是，那怎么样？
获取所有类别示例
public function getCategoryTreeNodeArrayByRootId($category_tree_root_id)
{
$em = $this->getEntityManager();
$query = $em
->createQueryBuilder()
->select('ct')
->from('AppBundle:Category', 'ct')
->where('ct.root = :root')
->setParameter('root', $category_tree_root_id)
->orderBy('ct.root, ct.lft', 'ASC')
->getQuery();
$query->setHint(\Doctrine\ORM\Query::HINT_INCLUDE_META_COLUMNS, true);
$build_my_tree = $query->getArrayResult();
return $build_my_tree;
}
获取元素与类别示例
对应的项目计数public function getItemCountsByCategory($in_stock = true)
{
$em = $this->getEntityManager();
if ($in_stock === true)
{
// atrod preču skaitu pa kategorijām
$query = $em->createQueryBuilder()
->select('(i.category) as category_id, COUNT(i.id) as record_count')
->from('AppBundle:Item', 'i')
->where('i.in_stock != 0')
->groupBy('i.category')
->getQuery();
}
else if ($in_stock === false)
{
// atrod preču skaitu pa kategorijām
$query = $em->createQueryBuilder()
->select('(i.category) as category_id, COUNT(i.id) as record_count')
->from('AppBundle:Item', 'i')
->where('i.in_stock == 0')
->groupBy('i.category')
->getQuery();
}
$query->setHint(\Doctrine\ORM\Query::HINT_INCLUDE_META_COLUMNS, true);
$item_counts = $query->getArrayResult();
return $item_counts;
}
我的Category实体：
<?php
namespace AppBundle\Entity;
use Gedmo\Mapping\Annotation as Gedmo;
use Doctrine\ORM\Mapping as ORM;
use Symfony\Component\Validator\Constraints as Assert;
use Doctrine\Common\Collections\ArrayCollection as ArrayCollection;
/**
* @Gedmo\Tree(type="nested")
* @ORM\Table(name="category")
* use repository for handy tree functions
* @ORM\Entity(repositoryClass="AppBundle\Repository\CategoryRepository")
*/
class Category
{
/**
* @ORM\Column(type="integer")
* @ORM\Id
* @ORM\GeneratedValue
*/
private $id;
/**
* @ORM\Column(type="string", length=100)
*
* @var string
*/
private $category_name_lv;
/**
* @ORM\Column(type="boolean")
*/
private $is_active;
/**
* @Gedmo\TreeLeft
* @ORM\Column(type="integer")
*/
private $lft;
/**
* @Gedmo\TreeLevel
* @ORM\Column(type="integer")
*/
private $lvl;
/**
* @Gedmo\TreeRight
* @ORM\Column(type="integer")
*/
private $rgt;
/**
* @Gedmo\TreeRoot
* @ORM\ManyToOne(targetEntity="Category")
* @ORM\JoinColumn(referencedColumnName="id", onDelete="CASCADE")
*/
private $root;
/**
* @Gedmo\TreeParent
* @ORM\ManyToOne(targetEntity="Category", inversedBy="children")
* @ORM\JoinColumn(referencedColumnName="id", onDelete="CASCADE")
*/
private $parent;
/**
* @ORM\OneToMany(targetEntity="Category", mappedBy="parent")
* @ORM\OrderBy({"lft" = "ASC"})
*/
private $children;
/**
* One Category has Many Items.
* @ORM\OneToMany(targetEntity="Item", mappedBy="category")
*/
private $items;
public function __construct()
{
$this->items = new ArrayCollection();
}
/**
* Get id
*
* @return integer
*/
public function getId()
{
return $this->id;
}
/**
* Set categoryNameLv
*
* @param string $categoryNameLv
*
* @return Category
*/
public function setCategoryNameLv($categoryNameLv)
{
$this->category_name_lv = $categoryNameLv;
return $this;
}
/**
* Get categoryNameLv
*
* @return string
*/
public function getCategoryNameLv()
{
return $this->category_name_lv;
}
/**
* Set isFile
*
* @param boolean $isActive
*
* @return Category
*/
public function setIsActive($isActive)
{
$this->is_active = $isActive;
return $this;
}
/**
* Get isFile
*
* @return boolean
*/
public function getIsActive()
{
return $this->is_active;
}
/**
* Set lft
*
* @param integer $lft
*
* @return Category
*/
public function setLft($lft)
{
$this->lft = $lft;
return $this;
}
/**
* Get lft
*
* @return integer
*/
public function getLft()
{
return $this->lft;
}
/**
* Set lvl
*
* @param integer $lvl
*
* @return Category
*/
public function setLvl($lvl)
{
$this->lvl = $lvl;
return $this;
}
/**
* Get lvl
*
* @return integer
*/
public function getLvl()
{
return $this->lvl;
}
/**
* Set rgt
*
* @param integer $rgt
*
* @return Category
*/
public function setRgt($rgt)
{
$this->rgt = $rgt;
return $this;
}
/**
* Get rgt
*
* @return integer
*/
public function getRgt()
{
return $this->rgt;
}
/**
* Set root
*
* @param \AppBundle\Entity\Category $root
*
* @return Category
*/
public function setRoot(\AppBundle\Entity\Category $root = null)
{
$this->root = $root;
return $this;
}
/**
* Get root
*
* @return \AppBundle\Entity\Category
*/
public function getRoot()
{
return $this->root;
}
/**
* Set parent
*
* @param \AppBundle\Entity\Category $parent
*
* @return Category
*/
public function setParent(\AppBundle\Entity\Category $parent = null)
{
$this->parent = $parent;
return $this;
}
/**
* Get parent
*
* @return \AppBundle\Entity\Category
*/
public function getParent()
{
return $this->parent;
}
/**
* Add child
*
* @param \AppBundle\Entity\Category $child
*
* @return Category
*/
public function addChild(\AppBundle\Entity\Category $child)
{
$this->children[] = $child;
return $this;
}
/**
* Remove child
*
* @param \AppBundle\Entity\Category $child
*/
public function removeChild(\AppBundle\Entity\Category $child)
{
$this->children->removeElement($child);
}
/**
* Get children
*
* @return \Doctrine\Common\Collections\Collection
*/
public function getChildren()
{
return $this->children;
}
/**
* Add item
*
* @param \AppBundle\Entity\Item $item
*
* @return Category
*/
public function addItem(\AppBundle\Entity\Item $item)
{
$this->items[] = $item;
return $this;
}
/**
* Remove item
*
* @param \AppBundle\Entity\Item $item
*/
public function removeItem(\AppBundle\Entity\Item $item)
{
$this->items->removeElement($item);
}
/**
* Get items
*
* @return \Doctrine\Common\Collections\Collection
*/
public function getItems()
{
return $this->items;
}
/**
* toString
*
* @return string
*/
public function __toString()
{
return $this->getCategoryNameLv();
}
}
我的Item实体：
<?php
namespace AppBundle\Entity;
use Doctrine\ORM\Mapping as ORM;
use Symfony\Component\Validator\Constraints as Assert;
/**
* @ORM\Entity(repositoryClass="AppBundle\Repository\ItemRepository")
* @ORM\Table(name="item")
*/
class Item
{
/**
* @ORM\Column(type="integer")
* @ORM\Id
* @ORM\GeneratedValue(strategy="AUTO")
*/
protected $id;
/**
* @ORM\Column(type="string", length=100)
*/
protected $unique_id;
/**
* @ORM\Column(type="string", length=100)
*/
protected $name_lv;
/**
* @ORM\Column(type="string", length=100)
*/
protected $name_ru;
/**
* @ORM\Column(type="string", length=200)
*/
protected $category_sub;
/**
* @ORM\Column(type="string", length=500)
*/
protected $category_full;
/**
* @ORM\Column(type="string", length=500)
*/
protected $link_lv;
/**
* @ORM\Column(type="string", length=500)
*/
protected $link_ru;
/**
* @ORM\Column(type="string", length=500)
*/
protected $local_image_small_url;
/**
* @ORM\Column(type="string", length=500)
*/
protected $local_image_big_url;
/**
* @ORM\Column(type="string", length=500)
*/
protected $local_image_big2_url;
/**
* @ORM\Column(type="string", length=500)
*/
protected $local_image_big3_url;
/**
* @ORM\Column(type="string", length=3000)
*/
protected $description_lv;
/**
* @ORM\Column(type="string", length=3000)
*/
protected $description_ru;
/**
* @ORM\Column(type="decimal", scale=2)
*/
protected $price;
/**
* @ORM\Column(type="integer")
*/
protected $in_stock;
/**
* @ORM\Column(type="boolean")
*/
protected $is_exclusive;
/**
* @ORM\Column(type="boolean")
*/
protected $is_new;
/**
* @ORM\ManyToOne(targetEntity="Day", inversedBy="items")
* @ORM\JoinColumn(name="day_id", referencedColumnName="id", onDelete="CASCADE")
*/
protected $day;
/**
* Many Items have One Category.
* @ORM\ManyToOne(targetEntity="Category", inversedBy="items")
* @ORM\JoinColumn(name="category_id", referencedColumnName="id", onDelete="CASCADE")
*/
private $category;
/**
* Get id
*
* @return integer
*/
public function getId()
{
return $this->id;
}
/**
* Set uniqueId
*
* @param string $uniqueId
*
* @return Item
*/
public function setUniqueId($uniqueId)
{
$this->unique_id = $uniqueId;
return $this;
}
/**
* Get uniqueId
*
* @return string
*/
public function getUniqueId()
{
return $this->unique_id;
}
/**
* Set nameLv
*
* @param string $nameLv
*
* @return Item
*/
public function setNameLv($nameLv)
{
$this->name_lv = $nameLv;
return $this;
}
/**
* Get nameLv
*
* @return string
*/
public function getNameLv()
{
return $this->name_lv;
}
/**
* Set nameRu
*
* @param string $nameRu
*
* @return Item
*/
public function setNameRu($nameRu)
{
$this->name_ru = $nameRu;
return $this;
}
/**
* Get nameRu
*
* @return string
*/
public function getNameRu()
{
return $this->name_ru;
}
/**
* Set categorySub
*
* @param string $categorySub
*
* @return Item
*/
public function setCategorySub($categorySub)
{
$this->category_sub = $categorySub;
return $this;
}
/**
* Get categorySub
*
* @return string
*/
public function getCategorySub()
{
return $this->category_sub;
}
/**
* Set categoryFull
*
* @param string $categoryFull
*
* @return Item
*/
public function setCategoryFull($categoryFull)
{
$this->category_full = $categoryFull;
return $this;
}
/**
* Get categoryFull
*
* @return string
*/
public function getCategoryFull()
{
return $this->category_full;
}
/**
* Set linkLv
*
* @param string $linkLv
*
* @return Item
*/
public function setLinkLv($linkLv)
{
$this->link_lv = $linkLv;
return $this;
}
/**
* Get linkLv
*
* @return string
*/
public function getLinkLv()
{
return $this->link_lv;
}
/**
* Set linkRu
*
* @param string $linkRu
*
* @return Item
*/
public function setLinkRu($linkRu)
{
$this->link_ru = $linkRu;
return $this;
}
/**
* Get linkRu
*
* @return string
*/
public function getLinkRu()
{
return $this->link_ru;
}
/**
* Set localImageSmallUrl
*
* @param string $localImageSmallUrl
*
* @return Item
*/
public function setLocalImageSmallUrl($localImageSmallUrl)
{
$this->local_image_small_url = $localImageSmallUrl;
return $this;
}
/**
* Get localImageSmallUrl
*
* @return string
*/
public function getLocalImageSmallUrl()
{
return $this->local_image_small_url;
}
/**
* Set localImageBigUrl
*
* @param string $localImageBigUrl
*
* @return Item
*/
public function setLocalImageBigUrl($localImageBigUrl)
{
$this->local_image_big_url = $localImageBigUrl;
return $this;
}
/**
* Get localImageBigUrl
*
* @return string
*/
public function getLocalImageBigUrl()
{
return $this->local_image_big_url;
}
/**
* Set localImageBig2Url
*
* @param string $localImageBig2Url
*
* @return Item
*/
public function setLocalImageBig2Url($localImageBig2Url)
{
$this->local_image_big2_url = $localImageBig2Url;
return $this;
}
/**
* Get localImageBig2Url
*
* @return string
*/
public function getLocalImageBig2Url()
{
return $this->local_image_big2_url;
}
/**
* Set localImageBig3Url
*
* @param string $localImageBig3Url
*
* @return Item
*/
public function setLocalImageBig3Url($localImageBig3Url)
{
$this->local_image_big3_url = $localImageBig3Url;
return $this;
}
/**
* Get localImageBig3Url
*
* @return string
*/
public function getLocalImageBig3Url()
{
return $this->local_image_big3_url;
}
/**
* Set descriptionLv
*
* @param string $descriptionLv
*
* @return Item
*/
public function setDescriptionLv($descriptionLv)
{
$this->description_lv = $descriptionLv;
return $this;
}
/**
* Get descriptionLv
*
* @return string
*/
public function getDescriptionLv()
{
return $this->description_lv;
}
/**
* Set descriptionRu
*
* @param string $descriptionRu
*
* @return Item
*/
public function setDescriptionRu($descriptionRu)
{
$this->description_ru = $descriptionRu;
return $this;
}
/**
* Get descriptionRu
*
* @return string
*/
public function getDescriptionRu()
{
return $this->description_ru;
}
/**
* Set price
*
* @param string $price
*
* @return Item
*/
public function setPrice($price)
{
$this->price = $price;
return $this;
}
/**
* Get price
*
* @return string
*/
public function getPrice()
{
return $this->price;
}
/**
* Set inStock
*
* @param integer $inStock
*
* @return Item
*/
public function setInStock($inStock)
{
$this->in_stock = $inStock;
return $this;
}
/**
* Get inStock
*
* @return integer
*/
public function getInStock()
{
return $this->in_stock;
}
/**
* Set isExclusive
*
* @param boolean $isExclusive
*
* @return Item
*/
public function setIsExclusive($isExclusive)
{
$this->is_exclusive = $isExclusive;
return $this;
}
/**
* Get isExclusive
*
* @return boolean
*/
public function getIsExclusive()
{
return $this->is_exclusive;
}
/**
* Set isExclusive
*
* @param boolean $isNew
*
* @return Item
*/
public function setIsNew($isNew)
{
$this->is_new = $isNew;
return $this;
}
/**
* Get isExclusive
*
* @return boolean
*/
public function getIsNew()
{
return $this->is_new;
}
/**
* Set day
*
* @param \AppBundle\Entity\Day $day
*
* @return Item
*/
public function setDay(\AppBundle\Entity\Day $day = null)
{
$this->day = $day;
return $this;
}
/**
* Get day
*
* @return \AppBundle\Entity\Day
*/
public function getDay()
{
return $this->day;
}
/**
* Set category
*
* @param \AppBundle\Entity\Category $category
*
* @return Item
*/
public function setCategory(\AppBundle\Entity\Category $category = null)
{
$this->category = $category;
return $this;
}
/**
* Get category
*
* @return \AppBundle\Entity\Category
*/
public function getCategory()
{
return $this->category;
}
}
请告知。
感谢您的时间和知识。