我在下面有一对多双向关系。
使用 symfony2 任务生成 crud 操作后，当我尝试在新的/编辑类别表单中保存与类别关联的产品时，产品没有保存......
namespace Prueba'FrontendBundle'Entity;
use Gedmo'Mapping'Annotation as Gedmo;
use Doctrine'ORM'Mapping as ORM;
use Doctrine'Common'Collections'ArrayCollection;
/**
* @ORM'Entity
* @ORM'Table(name="category")
*/
class Category
{
/**
* @var integer $id
*
* @ORM'Column(name="id", type="integer")
* @ORM'Id
* @ORM'GeneratedValue(strategy="AUTO")
*/
private $id;
/**
* @ORM'OneToMany(targetEntity="Product", mappedBy="category")
*/
protected $products;
/**
* @ORM'Column(name="name")
*/
protected $name;
public function __construct()
{
$this->products = new ArrayCollection();
}
public function getId()
{
return $this->id;
}
public function getName()
{
return $this->name;
}
public function setName($name)
{
$this->name = $name;
}
public function __toString()
{
return $this->name;
}
public function getProducts()
{
return $this->products;
}
public function setProducts($products)
{
die("fasdf"); //here is not entering
$this->products[] = $products;
}
public function addProduct($product)
{
die("rwerwe"); //here is not entering
$this->products[] = $product;
}
}
namespace Prueba'FrontendBundle'Entity;
use Gedmo'Mapping'Annotation as Gedmo;
use Doctrine'ORM'Mapping as ORM;
use Doctrine'Common'Collections'ArrayCollection;
/**
* @ORM'Entity
* @ORM'Table(name="product")
*/
class Product
{
/**
* @ORM'Id
* @ORM'Column(type="integer")
* @ORM'GeneratedValue(strategy="AUTO")
*/
protected $id;
/**
* @ORM'ManyToOne(targetEntity="Category", inversedBy="products")
* @ORM'JoinColumn(name="category_id", referencedColumnName="id")
*/
protected $category;
/**
* @ORM'Column(type="string", length=100)
*/
protected $name;
public function getId()
{
return $this->id;
}
public function getName()
{
return $this->name;
}
public function setName($name)
{
$this->name = $name;
}
public function getCategory()
{
return $this->category;
}
public function setCategory($category)
{
$this->category = $category;
}
public function __toString()
{
return $this->name;
}
}
作为双向的，您需要更新两侧的关联。
将此函数添加到类别实体中(如果您愿意，可以将其称为addChild(：
public function addProduct($product)
{
$this->children->add($product);
}
然后同时更新两个关联：
public function setProductCategory($product_category)
{
$this->productCategory = $product_category;
$product_category->addProduct($this);
}
提示：请勿使用 $children/$parent 来描述实体。称它为$category/$product，当您想添加另一个"父"关系时，您会遇到问题。
另一个简短的解决方案：
在类别实体中，将此行添加到 addProduct 函数中
public function addProduct($product)
{
$product->setCategory($this); // setting the cateogry of product
$this->products[] = $product;
}