thinkphp自定义业务逻辑有有关问题

thinkphp自定义业务逻辑有问题?
模型:

PHP code

<!--Code highlighting produced by Actipro CodeHighlighter (freeware)http://www.CodeHighlighter.com/-->class DepartmentModel extends Model{        public function getIndexDepart()    {        return 1;     }      

控制器

PHP code

 <br> class IndexAction extends Action <br> { <br>     public function index() <br>     { <br> 		$a = D('Department'); <br> 		echo " <pre class="brush:php;toolbar:false">"; <br> 		print_r($a->getIndexDepart()); <br> 		echo " 

";
        //echo THINK_PATH;
    }

}

可是TP提示:

Model:getIndexDepart您所请求的方法不存在！


求解


------解决方案--------------------

PHP code

class IndexAction extends Action{    public function index()    {        $a = D('Department');[color=#FF0000]        get_class($a);[/color]        echo "<pre class="brush:php;toolbar:false">";        print_r($a->getIndexDepart());        echo "

"; //echo THINK_PATH; }}