如何使用KNPPaginatorBundle使用Doctrine存储库对结果进行分页? [英] How to use KNPPaginatorBundle to paginate results using Doctrine Repository?

问题描述

我正在研究Symfony2项目，所以我决定使用KNPPaginatorBundle构建一个简单的分页系统.因此，我创建了一个Product实体，并希望将分页器添加到indexAction操作(由CRUD命令生成)中.

I'm working on a Symfony2 project and I decided to use KNPPaginatorBundle to build an easy pagination system. So I created a Product entity and I want to add the paginator to indexAction action (generated by CRUD command).

// Retrieving products.
$em = $this->getDoctrine()->getManager();

//$entities = $em->getRepository('LiveDataShopBundle:Product')->findAll();

$dql   = "SELECT a FROM LiveDataShopBundle:Product a";
$entities = $em->createQuery($dql);

// Creating pagnination
$paginator  = $this->get('knp_paginator');
$pagination = $paginator->paginate(
    $entities,
    $this->get('request')->query->get('page', 1),
    20
);

它工作正常，但我想使用产品的存储库，而不是直接在控制器中创建查询.我怎样才能做到这一点 ? 实际上，直接将结果集合添加到分页对象太慢了，因为它加载了所有乘积，然后分页了ArrayCollection.

It works fine but I want to use the Product's repository instead of creating the query directly in the controller. How can I do that ? In fact, directly add the collection of results to the paginate object is just too slow because its load all products then paginate the ArrayCollection.

谢谢.

K4

推荐答案

我建议在您的ProductRepository中使用QueryBuilder，然后将其传递给分页器:

I suggest using QueryBuilder in your ProductRepository and then passing that to the paginator:

ProductRepository extends EntityRepository
{
    // This will return a QueryBuilder instance
    public function findAll()
    {
        return $this->createQueryBuilder("p");
    }
}

在控制器中:

$products = $productRepository->findAll();

// Creating pagnination
$paginator  = $this->get('knp_paginator');
$pagination = $paginator->paginate(
    $products,
    $this->get('request')->query->get('page', 1),
    20
);

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