how to get cakephp recursive data - cakephp

Question

CREATE TABLE IF NOT EXISTS `employees` (
`employees_id` int(11) NOT NULL AUTO_INCREMENT,
`employees_firstname` varchar(100) DEFAULT NULL,
`employees_middlename` varchar(45) DEFAULT NULL,
`employees_lastname` varchar(100) DEFAULT NULL,
`employee_gender` enum('M','F') NOT NULL,
`employees_dob` date DEFAULT NULL,
`employees_emailaddress` varchar(255) DEFAULT NULL,
`employees_password` varchar(45) DEFAULT NULL,
`employees_datejoined` date DEFAULT NULL,
`employees_code` varchar(45) DEFAULT NULL,
`employees_status` tinyint(1) DEFAULT '1',
`employees_mobile` varchar(15) DEFAULT NULL,
`employees_designation` int(11) DEFAULT NULL,
`employees_bussiness_account` int(11) DEFAULT NULL,
`employees_image` varchar(255) DEFAULT NULL,
`employees_supervisers_id` int(11) DEFAULT NULL,
`employees_work_location_id` int(11) DEFAULT NULL,
`employees_date_added` datetime DEFAULT NULL,
PRIMARY KEY (`employees_id`),
UNIQUE KEY `employees_code_UNIQUE` (`employees_code`)
) ENGINE=InnoDB DEFAULT CHARSET=latin1 AUTO_INCREMENT=20 ;
--
-- Dumping data for table `employees`
--
INSERT INTO `employees` (`employees_id`, `employees_firstname`, `employees_middlename`, `employees_lastname`, `employee_gender`, `employees_dob`, `employees_emailaddress`, `employees_password`, `employees_datejoined`, `employees_code`, `employees_status`, `employees_mobile`, `employees_designation`, `employees_bussiness_account`, `employees_image`, `employees_supervisers_id`, `employees_work_location_id`, `employees_date_added`) VALUES
(16, 'Aneesh', 'C', 'S', 'M', '2012-11-05', 'aneesh.cs#calpinetech.com', '7106499a88fd79197ddbff61829993c9', '2010-12-07', 'cas927', 1, '9876543210', 1, 1, 'Betson.JPG', 0, 1, '2012-11-27 00:00:00'),
(17, 'Betson', 'T', 'Thomas', 'M', '2012-11-05', 'betson#calpinetech.com', '7106499a88fd79197ddbff61829993c9', '2008-12-06', 'cas450', 1, '9876543210', 6, 1, NULL, 16, 1, '2012-11-27 00:00:00'),
(18, 'test', 'test', 'test', 'M', '2012-11-12', 'test#calpinetech.com', '7106499a88fd79197ddbff61829993c9', '2012-11-06', 'cas999', 1, '9876543210', 1, 1, NULL, 16, 1, '2012-11-27 00:00:00'),
(19, 'asdsa', 'asdsad', 'asdsad', 'M', '2012-12-03', 'test#calpinetech.com', 'd8578edf8458ce06fbc5bb76a58c5ca4', '2012-12-24', 'ca0999', 1, '9876543210', 1, 1, NULL, 17, 1, '2012-12-04 00:00:00');
This is my table. Here employees_supervisers_id is the employees_id. How can we get the recursive data through cakephp?

Answer 1

I think that you are trying to create parent/child relationships between records in the same table. If that is what you are asking, you can create those relationships in the Employee model like this:
public $belongsTo = array(
'Supervisor' => array(
'className' => 'Employee',
'foreignKey' => 'employee_id',
'conditions' => '',
'fields' => '',
'order' => ''
),
);
public $hasMany = array(
'Underlings' => array(
'className' => 'Employee',
'foreignKey' => 'employees_supervisers_id',
'dependent' => false,
'conditions' => '',
'fields' => '',
'order' => '',
'limit' => '',
'offset' => '',
'exclusive' => '',
'finderQuery' => '',
'counterQuery' => ''
),
);

Answer 2

CakePHP gets it by default if you create the relationships between models.
If you do:
$employees = $this->Employee->find('all');
And you have created the relationships between models, you would be able to access the recursive data with something like this:
$employees['Employee']['Supervisor']['employees_firstname'];
I would recommend you to take a look at the documentation referring to the linking between models:
http://book.cakephp.org/2.0/en/models/associations-linking-models-together.html

Answer 3

To build a tree you need to use the TreeBehavior, and have parent_id and/or lft, rght field in your model.
lft and rght are for MPTT data
In your case you can configure the behavior to use your employees_supervisers_id field