Search a related table column in CDbCriteria search function for a CGridView

I have a CGridView which includes a table column that is linked through the relations method of the model

'cat'=>array(self::BELONGS_TO, 'Cat', 'cat_id','joinType'=>'INNER JOIN'),

I want to make this column searchable, but am not sure how to adapt the search method to do this. How do I access the related column? Currently I have:

$criteria=new CDbCriteria;

$criteria->with = array('cat');

...

$criteria->compare('cat.name',<img src='http://www.yiiframework.com/forum/public/style_emoticons/default/huh.gif' class='bbc_emoticon' alt='???' />???);

The view code simply includes ‘cat.name’, as a column to display the column.

Are you stuck getting a text field to display in the filter element of CGridView?

I create extra attributes in the model eg.

class Thing extends CActiveRecordModel {


public $searchCategoryName;


public function rules ()

{

    return array(

        '...,searchCategoryName,... ','safe','on'=>'search'

    );

}


public function search ()

{

    $criteria=new CDbCriteria;

    $criteria->with = array('cat');

    ...

    $criteria->compare('cat.name',$this->searchCategoryName);

}


}

Thanks Alex

That got me almost there.

I just had to change my view to include this for the relevant column

		array(

			'name'=>'searchCategoryName',

			'value'=>'$data->cat->name',

		),