Cakephp: Contain Behavior, conditions on array of array - cakephp

Question

I have a problem with contain behavior conditions and empty array.
There is part of code:
$menusTopUser = $this->Menu->find('all', array(
'contain' => array('TemplateRegion', 'Language', 'Item', 'MenusUserGroup' => array('conditions' => array('MenusUserGroup.user_group_id ' => $this->Auth->user('UserGroup.id')))
),
'conditions' => array(
'TemplateRegion.alias' => 'menu_top_user',
'Menu.active' => 1,
'Language.ISO-639-2' => $this->Session->read('Config.frontendLanguage'),
),
'fields' => array('Menu.title', 'Item.slug', 'Menu.url', 'Menu.target', 'Language.ISO-639-2'),
'order' => array('Menu.lft'),
'recursive' => 0));
$this->set(compact('menusTopUser'));
My associations look like:
Menu
hasMany: MenusUserGroup
MenusUserGroup
belongsTo: Menu, UserGroup
After executing the find, I have the next array where there are many MenusUserGroup empty. How make to filter only the record with 'MenusUserGroup.user_group_id ' => $this->Auth->user('UserGroup.id')?
Array(
[0] => Array
(
[Menu] => Array
(
[title] => Offerte e modulistica promoter
[url] =>
[target] => _self
[id] => 11
)
[Item] => Array
(
[slug] => offerte-e-modulistica-promoter
[id] => 36
)
[Language] => Array
(
[ISO-639-2] => ita
[id] => 1
)
[TemplateRegion] => Array
(
[id] => 10
)
[MenusUserGroup] => Array
(
)
)
[1] => Array
(
[Menu] => Array
(
[title] => Offerte e modulistica agenti
[url] =>
[target] => _self
[id] => 10
)
[Item] => Array
(
[slug] => offerte-modulistica
[id] => 29
)
[Language] => Array
(
[ISO-639-2] => ita
[id] => 1
)
[TemplateRegion] => Array
(
[id] => 10
)
[MenusUserGroup] => Array
(
[0] => Array
(
[id] => 7
[menu_id] => 10
[user_group_id] => 5
)
)
)
[2] => Array
(
[Menu] => Array
(
[title] => Gestione contratti
[url] =>
[target] => _self
[id] => 13
)
[Item] => Array
(
[slug] =>
[id] =>
)
[Language] => Array
(
[ISO-639-2] => ita
[id] => 1
)
[TemplateRegion] => Array
(
[id] => 10
)
[MenusUserGroup] => Array
(
[0] => Array
(
[id] => 10
[menu_id] => 13
[user_group_id] => 5
)
)
)

Answer 1

Use a join.
$menusTopUser = $this->Menu->find('all', array(
// join statement
'joins' => array(
array(
'table' => 'menus_user_groups',
'alias' => 'MenuUserGroupJoin',
'type' => 'INNER',
'conditions' => array(
'MenuUserGroupJoin.menu_id = Menu.id',
// condition
'MenuUserGroupJoin.user_group_id = ' . $this->Auth->user('UserGroup.id'),
),
),
),
'contain' => array('TemplateRegion', 'Language', 'Item', 'MenusUserGroup'),
'conditions' => array(
'TemplateRegion.alias' => 'menu_top_user',
'Menu.active' => 1,
'Language.ISO-639-2' => $this->Session->read('Config.frontendLanguage'),
),
'fields' => array('Menu.title', 'Item.slug', 'Menu.url', 'Menu.target', 'Language.ISO-639-2'),
'order' => array('Menu.lft'),
'recursive' => 0));