How To Use A Dropbox List In Cgridview

hello everyone!

This is a part of my CGridview:-




<?php $this->widget('zii.widgets.grid.CGridView', array(

	'id'=>'recordbook-grid',

	'dataProvider'=>$model->search(),

	//'filter'=>$model,

        'summaryText' => 'Your Record book shows {start} - {end} of {count} number of records',

    

	'columns'=>array(

		//'recordBookId',

		'date',

         

                array(

                'name'=>'grade',

                'type'=>'raw',

                'value'=>'CHtml::dropDownList(

                    "grade",$data->grade,array(Recordbook::model()->getGrades()),

                        array("empty"=>"Grade")

                        

                  )',

                    

                    'htmlOptions'=>array("width"=>"50px"),

                    'id'=>'grade_dropbox',

                  ),

            

                array(

                'name'=>'class1',

                'type'=>'raw',

                'value'=>'CHtml::dropDownList("class1[$data->recordBookId",$data->work,array(Recordbook::model()->getClasses(6)),

                     array("empty"=>"Class")

                )',

                'htmlOptions'=>array("width"=>"50px"),

                 ),



The first drop down lists’ result is to be passed onto the getClases method… how can I do this? i tried searching but so far no success…!

Thanks for your time!

Cheerz! :)