我是 CakePHP 的新手。现在,我正在使用 cakephp(版本 2.8.5)。
我尝试创建自定义查询分页,因为我需要加入多个表。但是,它不起作用,我得到了Unsupported operand types
错误。
在我的User
模型中,我尝试创建paginate()
和paginateCount()
运行如下所示。
public function paginate($conditions, $fields, $order, $limit, $page = 1, $recursive = null, $extra = array()) {
$recursive = -1;
// // Mandatory to have
// $this->useTable = false;
$sql = '';
$sql .= "SELECT u.id,u.name, u.password, r.display_name, GROUP_CONCAT(p.display_name SEPARATOR ', ') as per_name ";
$sql .= "FROM `users` u ";
$sql .= "LEFT JOIN roles r ON (u.role_id = r.id) ";
$sql .= "LEFT JOIN user_permission up ON (u.id = up.user_id) ";
$sql .= "LEFT JOIN permissions p ON (up.permission = p.id) ";
$sql .= "WHERE 1 GROUP BY u.name ORDER BY u.id ";
// Adding LIMIT Clause
$sql .= "LIMIT ".(($page - 1) * $limit) . ', ' . $limit;
$results = $this->query($sql);
return $results;
}
public function paginateCount($conditions = null, $recursive = 0,
$extra = array()) {
$sql = '';
$sql .= "SELECT COUNT(*) as count FROM
(SELECT u.id,u.name, u.password, r.display_name, GROUP_CONCAT(p.display_name SEPARATOR ', ') as per_name
FROM `users` u
LEFT JOIN roles r ON (u.role_id = r.id) LEFT JOIN user_permission up ON (u.id = up.user_id)
LEFT JOIN permissions p ON (up.permission = p.id)
WHERE 1
GROUP BY u.name
ORDER BY u.id ) AS Temp";
$this->recursive = $recursive;
$results = $this->query($sql);
return $results;
}
在我的UsersController
,
public function index() {
$users = $this->User->getAllUser();
//for pagination
$this->paginate = array(
'limit' => 4
);
$page = $this->paginate();
$count = $this->paginateCount();
$this->set('page',$page);
$this->set('rowCount',$count);
$this->set('users',$users);
$this->render('index');
}
但它不起作用,我得到了Unsupported operand types
致命的错误。我想可能是我在这里错了($this->paginate()
)。但实际上不确定我的代码有什么问题。
我已经在网上搜索了很多地方,但无法解决。我非常感谢任何建议。