以多对多关系 symfony2 的形式设置 multiple='false' [英] set multiple='false' in a form in a many to many relation symfony2
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问题描述
我有两个实体 A 和 B 之间的多对多关系.
I have a many-to-many relationship between two entities A and B.
所以在添加表单时,为了将entityA
添加到entityB
中,我是这样做的:
So when adding a form, in order to add entityA
to entityB
, I am doing the following:
$builder
->add('entityAs', 'entity', array(
'class' => 'xxxBundle:EntityA',
'property' => 'name',
'multiple' => true,
));}
一切都很好.
但是根据 entityA 的字段类型,我有时想将multiple"设置为 false,因此我正在执行以下操作:
But depending on the field type of entityA, I want to sometimes set 'multiple' to false, so I'm doing the following :
if($type=='a'){
$builder
->add('entityAs', 'entity', array(
'class' => 'xxxBundle:entityA',
'property' => 'name',
'multiple' => true,
));}
else {
$builder
->add('entityAs', 'entity', array(
'class' => 'xxxBundle:entityA',
'property' => 'name',
'multiple' => false,
));
}
这给了我以下错误:
Catchable Fatal Error: Argument 1 passed to DoctrineCommonCollectionsArrayCollection::__construct() must be an array, object given, called in C:wampwwwSymfonyvendordoctrineormlibDoctrineORMUnitOfWork.php on line 519 and defined in C:wampwwwSymfonyvendordoctrinecommonlibDoctrineCommonCollectionsArrayCollection.php line 48
有人可以帮我吗?
推荐答案
在 EntityA 中,你有这样的事情,对吧?
In EntityA, you have something like this, right?
public function setEntitiesB($data)
{
$this->entitiesB = $data ;
}
现在因为您也可以接收单个值而不是值数组,所以您需要这样的东西:
Now because you can also receive single value instead of array of values, you need something like this:
public function setEntitiesB($data)
{
if ( is_array($data) ) {
$this->entitiesB = $data ;
} else {
$this->entitiesB->clear() ;
$this->entitiesB->add($data) ;
}
}
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