Custom pagination query error in CakePHP - pagination

Question

I am new in CakePHP. Now, I am using cakephp (version 2.8.5).
I try to create custom query pagination because I need to join multiple tables. But, its not work and I got Unsupported operand types error.
In my User model, I try to create paginate() and paginateCount() function as shown in below.
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;
}
In my 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);
$this->render('index');
}
But its not work and I got Unsupported operand types fatal error. I think may be I was wrong in here($this->paginate()). But actually not sure what is wrong in my code.
I already searching a lot of place on web and can't solve. I'm very appreciate for any suggestion.

Answer 1

Ok, now I understand what's wrong in my code.
Problem is not in controller. I was wrong when I return $results in paginateCount() function. The correct way to returning the result must be like return $results[0][0]['count']; in the paginateCount() function.
Because the query result in paginateCount() will return like this:
array(1) { [0]=> array(1) { [0]=> array(1) { ["count"]=> string(1) "5"
} } }
Complete code for paginateCount() is as shown in below.
public function paginateCount($conditions = null, $recursive = 0,
$extra = array()) {
$sql = '';
$sql = "SELECT COUNT(*) as count FROM
(SELECT User.id,User.name, User.password, r.display_name, GROUP_CONCAT(p.display_name SEPARATOR ', ') as per_name
FROM `users` User
LEFT JOIN roles r ON (User.role_id = r.id) LEFT JOIN user_permission up ON (User.id = up.user_id)
LEFT JOIN permissions p ON (up.permission = p.id)
WHERE 1
GROUP BY User.name
ORDER BY User.id ) AS Temp";
$this->recursive = $recursive;
$results = $this->query($sql);
return $results[0][0]['count'];
}