[英]Zend Framework 2 TableGateway Select error
I want to know how many reservations are made at $reservation_datetime
. 我想知道在$reservation_datetime
进行了多少次$reservation_datetime
。 I wrote this code however I have error 我写了这段代码但是有错误
Catchable fatal error: Argument 1 passed to Reservations\\Model\\ReservationTable::Reservations\\Model{closure}() must be an instance of Reservations\\Model\\Select, instance of Zend\\Db\\Sql\\Select given, called in /home/.../vendor/zendframework/zend-db/src/TableGateway/AbstractTableGateway.php on line 190 and defined in /home/.../module/Reservations/src/Reservations/Model/ReservationTable.php on line 99 可捕获的致命错误:传递给Reservations \\ Model \\ ReservationTable :: Reservations \\ Model {closure}()的参数1必须是Reservations \\ Model \\ Select的实例,Zend \\ Db \\ Sql \\ Select的实例已给定,在/ home /中调用... /第190行的/vendor/zendframework/zend-db/src/TableGateway/AbstractTableGateway.php并在第99行的/home/.../module/Reservations/src/Reservations/Model/ReservationTable.php中定义
The line 99 is: 第99行是:
$this->num = $this->tableGateway->select(function (Select $select) {
$select->columns(array('num' => new \Zend\Db\Sql\Expression('COUNT(*)')));
$select->where(array('reservation_date' => $reservation_datetime));
});
Of this code 这段代码
class ReservationTable
{
protected $tableGateway;
public function __construct(TableGateway $tableGateway)
{
$this->tableGateway = $tableGateway;
}
public function saveReservation(Reservation $reservation)
{
$data = array(
'reservation_date' => $reservation_datetime,
...
);
$reservation_spot = (int)1;
$rsn = $this->getReservationCount($reservation_datetime);
if($rsn < 4) {
for($i=1; $i<4; $i++){
if($rsn = $i) {
$reservation_spot++;
}
}
}
else {
throw new \Exception('No available spots');
}
}
public function getReservationCount($reservation_datetime)
{
$this->num = $this->tableGateway->select(function (Select $select) {
$select->columns(array('num' => new \Zend\Db\Sql\Expression('COUNT(*)')));
$select->where(array('reservation_date' => $reservation_datetime));
});
return $this->num;
}
}
You have forgot to include the Select
class from Zend. 您忘记了包含Zend中的Select
类。 At the top of the class add this line. 在课程的顶部添加此行。
use Zend\\Db\\Sql\\Select;
use Zend\Db\Sql\Select;
class ReservationTable
{
protected $tableGateway;
public function __construct(TableGateway $tableGateway)
{
$this->tableGateway = $tableGateway;
}
public function saveReservation(Reservation $reservation)
{
$data = array(
'reservation_date' => $reservation_datetime,
...
);
$reservation_spot = (int)1;
$rsn = $this->getReservationCount($reservation_datetime);
if($rsn < 4) {
for($i=1; $i<4; $i++){
if($rsn = $i) {
$reservation_spot++;
}
}
}
else {
throw new \Exception('No available spots');
}
}
public function getReservationCount($reservation_datetime)
{
$this->num = $this->tableGateway->select(function (Select $select) {
$select->columns(array('num' => new \Zend\Db\Sql\Expression('COUNT(*)')));
$select->where(array('reservation_date' => $reservation_datetime));
});
return $this->num;
}
}
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