Excel Model \app\Model\Excel.php

Excel.php

<?php
App::uses('AppModel', 'Model');
/**
 * Excel Model
 *
 */
class Excel extends AppModel {

/**
 * Use table
 *
 * @var mixed False or table name
 */
	public $useTable = 'excel';

/**
 * Primary key field
 *
 * @var string
 */
	public $primaryKey = 'ID';

/**
 * Display field
 *
 * @var string
 */
	public $displayField = 'LastName';


    public $belongsTo = Array(
                            'Alias2' => array(
                                                'className' => 'TimeSlot',
                                                'foreignKey' => 'ID'
                                             )
                             );


}