Php 从Doctrine中的两个表中检索数据

我这里有个小问题：

$advList = Doctrine::getTable('Advertiser')
        ->createQuery('a')
        ->leftJoin('a.PrincCity p')
        ->leftJoin('a.TourCity t')
        ->leftJoin('a.Category')
        ->orderBy('a.new DESC')
        ->where('a.is_activated = ?', true)
        ->andWhereNotIn('a.category_id', array(4, 5))
        ->andWhere('( (t.slug IS NULL AND p.slug = ?) OR t.slug = ?)', array($city_slug, $city_slug))
        ->addOrderBy('a.created_at DESC');

    $this->pager = new sfDoctrinePager('Advertiser', 50);
    $this->pager->setQuery($advList);
    $this->pager->setPage($request->getParameter('page', 1));
    $this->pager->init();

这段代码获取一个城市的所有广告商（由表Advertiser中的ID表示）-现在我有了第二个表Advertiser city，其中包含ID、AdvertiserId和CityID，因此我可以为一个广告商设置多个城市（例如，有5行，其中AdvertiserId 99和不同的CityID）

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问题是，我需要从一个城市获取所有广告商，但上面的代码只能在DB中的一个表中使用，因此我不知道如何在第二个表中搜索（使用其他城市）。

我不确定我是否能理解您的问题，但我认为如果您定义了n-m广告商-城市关系：

Advertiser:
  ...
  relations:
    Cities: { class: City, refClass: AdvertiserCity, local: advertiser_id, foreign: city_id } 

AdvertiserCity:
  columns:
    advertiser_id: { type: integer,...}
    city_id: { type: integer,....}
  ...
  relations:
    City: { local: city_id, foreign: id, foreignAlias: AdvertiserCities } 
    Advertiser: { local: advertiser_id, foreign: id, foreignAlias: AdvertiserCities } 

然后，您的查询可以如下所示：

$advList = Doctrine::getTable('Advertiser')
        ->createQuery('a')
        ->innerJoin('a.Cities c')
        ...
        ->addWhere('c.id = ?',$city_id)
        ...;

---

我不确定我是否能理解您的问题，但我认为如果您对n-m广告商与城市的关系有明确的定义：

Advertiser:
  ...
  relations:
    Cities: { class: City, refClass: AdvertiserCity, local: advertiser_id, foreign: city_id } 

AdvertiserCity:
  columns:
    advertiser_id: { type: integer,...}
    city_id: { type: integer,....}
  ...
  relations:
    City: { local: city_id, foreign: id, foreignAlias: AdvertiserCities } 
    Advertiser: { local: advertiser_id, foreign: id, foreignAlias: AdvertiserCities } 

然后，您的查询可以如下所示：

$advList = Doctrine::getTable('Advertiser')
        ->createQuery('a')
        ->innerJoin('a.Cities c')
        ...
        ->addWhere('c.id = ?',$city_id)
        ...;