您好我正在尝试使用Zend 2,并且我对表网关中的where子句有一些问题。
以下是我的课程表:
//module\Detectos\src\Detectos\Model\OperatingSystemTable.php
namespace Detectos\Model;
use Zend\Db\TableGateway\TableGateway;
class OperatingSystemsTable
{
public function findOs($userAgent)
{
$resultSet = $this->tableGateway->select();
foreach ($resultSet as $osRow)
{
//check if the OS pattern of this row matches the user agent passed in
if (preg_match('/' . $osRow->getOperatingSystemPattern() . '/i', $userAgent)) {
return $osRow; // Operating system was matched so return $oses key
}
}
return 'Unknown'; // Cannot find operating system so return Unknown
}
}
模型如下:
class Detectos
{
public $id;
public $operating_system;
public $operating_system_pattern;
public function exchangeArray($data)
{
$this->id = (isset($data['id'])) ? $data['id'] : null;
$this->operating_system = (isset($data['operating_system '])) ? $data['operating_system '] : null;
$this->operating_system_pattern = (isset($data['operating_system_pattern'])) ? $data['operating_system_pattern'] : null;
}
public function getOperatingSystemPattern()
{
return $this->operating_system_pattern;
}
}
我有什么作品,但我应该能够做到这样的事情:
public function findOs($userAgent)
{
$resultSet = $this->tableGateway->select()->where('operating_system_pattern like %' . $userAgent . '%';
}
但我无法找到正确的方法。
编辑(12/11/2012 07:53): 我从Sam的回答中尝试了以下内容但却出现了错误:
$spec = function (Where $where) {
$where->like('operating_system_type', '%' . $this->userAgent . '%');
};
$resultSet = $this->tableGateway->select($spec);
但是出现了以下错误:
Catchable fatal error: Argument 1 passed to Detectos\Model\OperatingSystemsTable::Detectos\Model\{closure}() must be an instance of Detectos\Model\Where, instance of Zend\Db\Sql\Select given.
我还想补充一点,我已阅读文档并遵循教程。没有提到在那里使用Zend \ Db \ Sql。我不能在tableGateway中使用高级where子句的示例。我可能错过了一些东西,但我不认为这很明显。
答案 0 :(得分:10)
为什么人们会忽略official documentation?简单的例子是:
$artistTable = new TableGateway('artist', $adapter);
$rowset = $artistTable->select(array('id' => 2));
但是,您可以为select()函数提供类型为Zend\Db\Sql\Where
的参数。 this part of the official documentation再次帮助很多。使用Where
,您可以执行更清晰的代码,例如:
$where = new Where();
$where->like('username', 'ralph%');
$this->tableGateway->select($where)
希望这会对你有所帮助。不要忽视文档! ;)