单个EntityType生成大量查询

时间:2016-10-20 13:39:12

标签: symfony doctrine-orm

我正在尝试提供> 300个选项的选择

$form->add('products', EntityType::class, array(
    'class' => Product::class,
    'query_builder' => function (ProductRepository $er) use ($customerId) {
        return $er->QBByCustomer($customerId);
    },
    'choice_label' => 'l.name',
));

QueryBuilder:

public function QBByCustomer($customer = null)
{
    return $this->QB()
        ->addSelect('p.name AS HIDDEN name')
        ->join('p.customer', 'c')
        ->join('p.label', 'l')
        ->where('c.customer = :customer')
        ->setParameter('customer', $customer)
        ->addOrderBy('name')
    ;
}

当我渲染表单时,Doctrine会生成> 300个查询来加载每个相关对象。

有没有办法告诉Doctrine使用我提供的QueryBuilder中的标签,而不是像可选项一样激发查询?

1 个答案:

答案 0 :(得分:2)

由于显示的标签是从链接的实体(label)中提取的,我们必须帮助Doctrine加载它。

以下是QueryBuilder的外观:

'query_builder' => function (ProductRepository $er) use ($customerId) {
    $qb = $er->QBByCustomer($customerId);
    $qb->addSelect('partial p.{id}');
    $qb->addSelect('partial l.{id, name}');
    return $qb;
},
'choice_label' => 'label.name',