[英]symfony2 embedded form collection and entity mapping
我一直遵循有关如何创建嵌入式表单集合的symfony2教程,但由于仅创建联结表而无法实现它。
根据doctrine2文档的说明:“为什么多对多关联不那么常见?因为经常要将其他属性与一个关联相关联,因此引入了关联类。因此,直接的多对多关联消失了,由3个参与班级之间的一对多/多对一关联取代。”
以下是我的代码片段:
src / AppBundle / Entity / Ingredient.php
/**
* Defines the properties of the Ingredient entity to represent the portal ingredients.
*
* @author furious_snail
*
* @ORM\Entity()
* @ORM\Table(name="ingredients")
* @UniqueEntity("name")
*/
class Ingredient
{
/**
* @ORM\Id()
* @ORM\Column(type="integer")
* @ORM\GeneratedValue(strategy="AUTO")
*/
private $id;
/**
* @ORM\ManyToOne(targetEntity="IngredientCategory")
* @ORM\JoinColumn(name="category_id", referencedColumnName="id", nullable=true)
*/
private $category;
/**
* @ORM\Column(type="string", unique=true)
*/
private $name;
/**
* @ORM\OneToMany(targetEntity="IngredientNutrient", mappedBy="ingredient", cascade={"persist", "remove"})
*/
private $nutrientsPer100G;
public function __construct()
{
$this->substitute = new ArrayCollection();
$this->nutrientsPer100G = new ArrayCollection();
}
public function getId()
{
return $this->id;
}
public function setName($name)
{
$this->name = $name;
}
public function getName()
{
return $this->name;
}
/**
* @param mixed $nutrientsPer100G
*/
public function setNutrientsPer100G($nutrientsPer100G)
{
$this->nutrientsPer100G = $nutrientsPer100G;
}
/**
* @return array
*/
public function getNutrientsPer100G()
{
return $this->nutrientsPer100G;
}
}
src / AppBundle / Entity / IngredientNutrient.php
/**
* @ORM\Entity()
* @ORM\Table(name="ingredient_nutrient")
*/
class IngredientNutrient
{
/**
* @ORM\Id()
* @ORM\Column(type="integer")
* @ORM\GeneratedValue(strategy="AUTO")
*/
private $id;
/**
* @var integer
*
* @ORM\ManyToOne(targetEntity="Ingredient", inversedBy="nutrientsPer100G")
* @ORM\JoinColumn(name="ingredient_id", referencedColumnName="id", nullable=true)
*/
protected $ingredient;
/**
* @var integer
*
* @ORM\ManyToOne(targetEntity="Nutrient")
* @ORM\JoinColumn(name="nutrient_id", referencedColumnName="id", nullable=true)
*/
protected $nutrient;
/**
* @ORM\Column(type="float")
*/
private $quantity;
/**
* @ORM\ManyToOne(targetEntity="Unit")
* @ORM\JoinColumn(name="unit_id", referencedColumnName="id", nullable=true)
*/
private $unit;
/**
* @return mixed
*/
public function getId()
{
return $this->id;
}
/**
* @return mixed
*/
public function getIngredient()
{
return $this->ingredient;
}
/**
* @param mixed $ingredient
*/
public function setIngredient($ingredient)
{
$this->ingredient = $ingredient;
}
/**
* @return mixed
*/
public function getNutrient()
{
return $this->nutrient;
}
/**
* @param mixed $nutrient
*/
public function setNutrient($nutrient)
{
$this->nutrient = $nutrient;
}
/**
* @return mixed
*/
public function getQuantity()
{
return $this->quantity;
}
/**
* @param mixed $quantity
*/
public function setQuantity($quantity)
{
$this->quantity = $quantity;
}
/**
* @return mixed
*/
public function getUnit()
{
return $this->unit;
}
/**
* @param mixed $unit
*/
public function setUnit($unit)
{
$this->unit = $unit;
}
}
src / AppBundle / Form / Type / IngredientNutrientType.php
class IngredientNutrientType extends AbstractType
{
public function buildForm(FormBuilderInterface $builder, array $options)
{
$builder
->add('nutrient', 'entity', array(
'class' => 'AppBundle\Entity\Nutrient',
'choice_label' => 'name',
'label' => 'Nutrient',
))
->add('quantity', null, array('label' => 'Cantitate'))
->add('unit', 'entity', array(
'class' => 'AppBundle\Entity\Unit',
'choice_label' => 'unit',
'label' => 'Unitate de masura'
));
}
public function configureOptions(OptionsResolver $resolver)
{
$resolver->setDefaults(array(
'data_class' => 'AppBundle\Entity\IngredientNutrient',
));
}
public function getName()
{
return 'app_ingredient_nutrient';
}
}
src / AppBundle / Form / Type / IngredientType.php
class IngredientType extends AbstractType
{
public function buildForm(FormBuilderInterface $builder, array $options)
{
$builder
->add('name', null, array('label' => 'Name'))
->add('nutrients_per_100_g', 'collection', array(
'type' => new IngredientNutrientType(),
'allow_add' => true,
'label' => 'Nutrient quantity per 100g',
'options' => array('label' => false),
));
}
public function configureOptions(OptionsResolver $resolver)
{
$resolver->setDefaults(array(
'data_class' => 'AppBundle\Entity\Ingredient',
));
}
public function getName()
{
return 'app_ingredient';
}
}
这项工作有效,但我确实获得了一个嵌入式表单集合,但问题是Ingredient_营养表中的Ingredient_id为空。 如何使用正确的ID填写表格?
这些是我在页面上获得的字段:
名称:
养分:
数量:
单元:
这个想法是,如果我将IngredientNutrient形式与Ingredient形式联系在一起,则用户不必两次指定成分名称。
谢谢。
首先,您需要“交叉引用”您的实体:
public function setNutrientsPer100G($nutrientsPer100G)
{
$this->nutrientsPer100G = $nutrientsPer100G;
$nutrientsPer100G->setIngrediant($this);
}
确保关系的两侧都已设置。 这将解决null id问题。
另一个问题是您在Ingrediant / Nutrient实体中使用集合,但是set方法未使用数组运算符。
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