在Sonata管理员上导出一对多关系

问题描述

我试图在网上搜索这个问题的明确解决方案，但是对于新手来说，确实没有具体的解决方案.

I have tried to search online for a definite solution to this question but there's really no concrete solution for newbies out there.

我有一个条目，其中包含许多EntryListing.在我的EntryAdmin listMapper中，我可以轻松地通过一条语句来列出条目，例如

I have an Entry which has many EntryListing. In my EntryAdmin listMapper, i comfortably can list entries by a statement as simple as

->add('listings')

仅返回EntryListing __toString()函数中定义的列表.

which simply returns the listings as defined in the EntryListing __toString() function.

在导出数据时是否有一种方法可以通过覆盖如下的getExportFields()函数来实现相同的目的:

Is there a way to achieve the same when exporting the data by overiding the getExportFields() functions as below:

public function getExportFields()
{
    return array('name','tel','email','deviceType','postedOn','createdAt','facilitator','listings');
}

非常感谢您的帮助

推荐答案

还有另一种方法，您可以在实体中添加一个属性，该属性将获取与之相关的所有条目列表，并在getter函数中返回相关条目的__toString() ，我的订单场景相同，如果与订单相关的产品也需要列表，所以我通过在orders实体中创建exportProducts来做到这一点

There is another work around you can add a property in your entity which will get all entry listing related to that and in getter function return __toString() of related ones, I had the same scenario for orders and also need the list if products associated with order so i have done it this way by creating exportProducts in orders entity

protected $exportProducts;

public function getExportProducts()
{
    $exportProducts = array();
    $i = 1;
    foreach ($this->getItems() as $key => $val) {
        $exportProducts[] = $i .
           ') Name:' . $val->getProduct()->__toString()() .
           ' Size:' . $val->getProductsize() .
           .../** Other properties */;
        $i++;
    }
    return $this->exportProducts = join(' , ', $exportProducts);
}

然后为了管理类，我在getExportFields()中将exportProducts属性定义为

And in order admin class i defined exportProducts property in getExportFields() as

public  function getExportFields(){
    return array(
        'Products'=>'exportProducts',
         ....// Other properties
        );
}

在已下载的csv中，每个订单都包含在Products单元格下的产品列表(以逗号分隔的列表)

In downloaded csv each order contains the list of products under Products cell as comma separated list

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