cmc-sales/controllers/line_items_controller.php

<?php
class LineItemsController extends AppController {

    var $name = 'LineItems';
    var $helpers = array('Html', 'Form', 'Javascript');

    var $components = array('RequestHandler');



    function ajax_add() {
	$this->layout = 'ajax';
	if(!empty($this->data)) {
	    $this->LineItem->create($this->data);

	    if ($this->LineItem->saveAll($this->data)) {
		echo "SUCCESS";
	    }
	    else {
		echo "FAILURE";
	    }
	}
	else {
	    echo "NO-DATA";
	}

    }


    function getTable($documentID = null) {
	$this->layout = 'ajax';
	if($documentID == null) {
	    echo "INVALID DOCUMENT ID";
	}
	else {
	    $document = $this->LineItem->Document->find('first',array('conditions'=>array('Document.id'=>$documentID)));
	    $this->set('document',$document);

	    $currencies = $this->LineItem->Document->Quote->Currency->find('list', array('fields'=>array('Currency.id','Currency.iso4217')));
	    $this->set('currencies',$currencies);
	}
    }


    function edit($id = null) {

    }

    function add($documentID = null) {
	$document = $this->LineItem->Document->read(null, $documentID);
	$this->set('document', $document);
	$this->set('principles', $this->LineItem->Product->Principle->find('list'));
    }

}
?>