Retrieve data using JOIN sql in Zend Framework 2 - php

Question

I need to retrive data from 2 tables using join.
I have this code, but it fails with Call to undefined method Zend\Db\ResultSet\ResultSet::from():
public function getUsers($id){
$id = (int) $id;
$rowset = $this->tableGateway->select()->from(array('u' => 'user'))
->join(array('l' => 'levels'),
'u.user_id = l.id_user');
$row = $rowset->current();
if (!$row) {
throw new \Exception("Could not find row $id");
}
return $row;
}
The SQL command would be:
select user.*,levels.name from user left join levels on user.user_id=levels.id_user
Thanks
UPDATE
Using #Mohamad changes I get:
The table name of the provided select object must match that of the table
My UsersTable.php looks like this now:
<?php
// module/Users/src/Users/Model/UsersTable.php:
namespace Users\Model;
use Zend\Db\TableGateway\TableGateway;
use Zend\Db\Sql\Select;
class UsersTable
{
protected $tableGateway;
public function __construct(TableGateway $tableGateway)
{
$this->tableGateway = $tableGateway;
}
public function fetchAll()
{
$select = new Select();
$select->from('levels');
$select->join('user', 'levels.id=user.user_id',Select::SQL_STAR,Select::JOIN_RIGHT);
$rowset = $this->tableGateway->selectWith ( $select );
$resultSet = $rowset->current();
if (!$resultSet) {
throw new \Exception("Could not find row $id");
}
return $resultSet;
}

Answer 1

i think you must pass two TableGetway to UserTable construct. you have to change Module.php
look this:
public function getServiceConfig()
{
return array(
'factories' => array(
'User\Model\UserTable' => function($sm) {
$userTableGateway = $sm->get('UserTableGateway');
$levelTableGateway = $sm->get('LevelTableGateway');
$table = new UserTable($userTableGateway,$levelTableGateway);
return $table;
},
'UserTableGateway' => function ($sm) {
$dbAdapter = $sm->get('Zend\Db\Adapter\Adapter');
$resultSetPrototype = new ResultSet();
$resultSetPrototype->setArrayObjectPrototype(new User());
return new TableGateway('user', $dbAdapter, null, $resultSetPrototype);
},
'LevelTableGateway' => function ($sm) {
$dbAdapter = $sm->get('Zend\Db\Adapter\Adapter');
$resultSetPrototype = new ResultSet();
$resultSetPrototype->setArrayObjectPrototype(new Level());
return new TableGateway('level', $dbAdapter, null, $resultSetPrototype);
},
),
);
}
then in your model:
protected $userTableGateway;
protected $levelTableGateway;
public function __construct($userTableGateway,$levelTableGateway)
{
$this->userTableGateway = $userTableGateway;
$this->levelTableGateway = $levelTableGateway;
}
public function fetchAll()
{
$select = new Select();
$select->from('levels');
$select->join('user', 'levels.id=user.user_id',Select::SQL_STAR,Select::JOIN_RIGHT);
$rowset = $this->levelTableGateway->selectWith ( $select );
$resultSet = $rowset->current();
if (!$resultSet) {
throw new \Exception("Could not find row $id");
}
return $resultSet;
}
i hope helped you