Cakephp HABTM many to many relation

Question

Hello I'm having trouble setting up a simple HABTM in cakephp.

Please tell me what is wrong? I followed the documentation closely.

My controller (it's a REST service)

class UsersController extends AppController {

    public $components = array('RequestHandler');

    public function index() {
        $this->set(array(
            'users' => $this->User->find('all'),
            '_serialize' => array('users')
        ));
    }
}

My User.php model:

class User extends AppModel {

    public $hasAndBelongsToMany = array(
        'Sport' => array(
            'className' => 'Sport',
            'joinTable' => 'sports_users',
            'foreignKey' => 'user_id',
            'associationForeignKey' => 'sport_id',
            'unique' => true,
            'conditions' => '',
            'fields' => '',
            'order' => '',
            'limit' => '',
            'offset' => '',
            'finderQuery' => '',
            'with' => ''
        )
    );
}

My Sport.php Model

class Sport extends AppModel{

    public $hasAndBelongsToMany = array(
        'User' => array(
            'className' => 'User',
            'joinTable' => 'sports_users',
            'foreignKey' => 'sport_id',
            'associationForeignKey' => 'user_id',
            'unique' => true,
            'conditions' => '',
            'fields' => '',
            'order' => '',
            'limit' => '',
            'offset' => '',
            'finderQuery' => '',
            'with' => ''
        )
    );
} 

And this is how my DB looks like:

The users table:

The sports table:

Finally the sports_users table:

Lastly this is the error I'm getting:

Fatal error: Call to a member function schema() on a non-object in C:\wamp\www\SportsAround\lib\Cake\Model\Model.php on line 3627

Full image:

So where did I got it wrong? Thank you

Answer 1

I solved it by changing

public $hasAndBelongsToMany = array(
    'Sport' => array(
        'className' => 'Sport',
        'joinTable' => 'sports_users',
        'foreignKey' => 'user_id',
        'associationForeignKey' => 'sport_id',
        'unique' => true,
        'conditions' => '',
        'fields' => '',
        'order' => '',
        'limit' => '',
        'offset' => '',
        'finderQuery' => '',
        'with' => ''
    )
);

To

public $hasAndBelongsToMany = array('Sport');

And

public $hasAndBelongsToMany = array(
    'User' => array(
        'className' => 'User',
        'joinTable' => 'sports_users',
        'foreignKey' => 'sport_id',
        'associationForeignKey' => 'user_id',
        'unique' => true,
        'conditions' => '',
        'fields' => '',
        'order' => '',
        'limit' => '',
        'offset' => '',
        'finderQuery' => '',
        'with' => ''
    )
);

To

public $hasAndBelongsToMany = array('User');

But I still don't understand why that solved it.