Cakephp Find conditions on related table with hasAndBelongsToMany

Question

I have the following code that gives an error from the moment I do a find condition on the associated Model (HABTM):

class Users extends Model{
    public $useTable = 'users';

    public $hasAndBelongsToMany = array(
        'UserCategories' => array(
            'className' => 'UserCategories',
            'joinTable' => 'user_categories_link',
            'foreignKey' => 'user_id',
            'associationForeignKey' => 'category_id',
            'unique' => false,
        )
    );
    public function getData($page = 0, $category = '', $subcategory = ''){
    return $this->find('all', array(
        'limit'     => 6,
        'page'      => $page,
        'conditions'=> array(
            'active'=> 1,
            'UserCategories.category_name' => $category, // THIS GIVES ERROR
            'UserCategories.category_subcategory' => $subcategory, // THIS GIVES ERROR

        )
    ));
}

In my Controller:

$this->Users->getData(0, 'somemaincategory', 'somesubcategory');

I can't seem to do conditions on the related HABTM-Model (UserCategories in this case). I also tried to use 'contain' (with $actsAs), but then he stills gives me all the User data even if there is no Category linked with it. The Category array is in that case just blank.

Hope someone can help me. Thanks in advance,

Aäron

Answer 1

Do a manual join. You can use this to do an actual inner join (contain will act as a left join). http://book.cakephp.org/2.0/en/models/associations-linking-models-together.html#joining-tables

$this->find('all', 
     array(
         'conditions' => array(
              'active' => 1,
          ), 
         'joins' => array(
               array(
                   'table' => 'user_categories_link',
                   'alias' => 'UserCategoriesLink',
                   'type' => 'inner',
                   'conditions' => array(
                        'UserCategoriesLink.user_id = User.id'
                   ),
              ),
              array(
                   'table' => 'user_categories',
                   'alias' => 'UserCategories',
                   'type' => 'inner',
                   'conditions' => array(
                        'UserCategories.id = UserCategoriesLink.category_id',
                        'UserCategories.category_name' => $category,
                        'UserCategories.category_subcategory' => $subcategory,
                   ),
              )
         ),
     )
);