// User Model:

class User extends AppModel {
	var $actsAs = array('Containable');

	public $belongsTo = array(
		'Company' => array(
			'className' => 'Company',
			'foreignKey' => 'company_id'
		)
	);

	public $hasOne = array(
		'Membership' => array(
			'className' => 'Membership',
			'foreignKey' => 'user_id',
			'dependent' => false
		)
	);
}

// Company Model:

class Company extends AppModel {
	var $actsAs = array('Containable');
	public $displayField = 'name';

	public $hasMany = array(
		'User' => array(
			'className' => 'User',
			'foreignKey' => 'company_id',
			'dependent' => false
		)
	);

}

// Membership:

class Membership extends AppModel {
	var $actsAs = array('Containable');

	public $belongsTo = array(
		'User' => array(
			'className' => 'User',
			'foreignKey' => 'user_id'
		)
	);
}