Question

我正在为MySQL结果保湿：

public function getMiscdamage($id) 
{
    $sql = new Sql($this->dbAdapter);
    $select = $sql->select('misc_damage');
    $select->where(array('vehicle_id = ?' => $id))->order('date_added DESC');
    $select->join('user','user.user_id = misc_damage.added_user_id', array('added_user_display_name' => 'display_name'), 'left');

    $stmt = $sql->prepareStatementForSqlObject($select);
    $result = $stmt->execute();

    if ($result instanceof ResultInterface && $result->isQueryResult()) {
        $resultSet = new HydratingResultSet(new \Zend\Stdlib\Hydrator\ClassMethods(), new \Application\Model\Miscdamage());

        return $resultSet->initialize($result);
    }

    throw new \InvalidArgumentException("Vehicle with given ID:{$id} not found.");
}

查询具有LEFT连接，查询可以正常工作。但是当我在循环中var_dump时，added_user_display_name`为null：

/var/www/zf-skeleton/module/Application/view/application/live/details.phtml:337:
object(Application\Model\Miscdamage)[662]
  protected 'id' => string '100' (length=3)
  protected 'vehicle_id' => string '8' (length=1)
  protected 'added_user_id' => string '1' (length=1)
  protected 'added_user_display_name' => null
  protected 'description' => string 'dfgdggfdd' (length=9)
  protected 'date_added' => string '2016-04-15 12:26:40' (length=19)
  protected 'date_repaired' => null
  protected 'repaired_user_id' => null
  protected 'status' => string '0' (length=1)

如何使用左连接和保湿器？任何帮助表示赞赏。

Answer 1

您的sql结果是来自功能需要数据的响应。因此，您应该使用专为此功能需求而构建的定制保湿器。这种保湿剂通常是一种聚合剂保湿剂，它使用多个保湿剂来构建定制模型。你应该看看

ZF2 Hydrator和LEFT JOIN

1 个答案: