Expression For Image's Url In Cbuttoncolumn

Archives Feature Requests
1

Hi guys.

Sometimes I want some buttons in CButtonColumn::buttons to have an image URL depending on $data contents of each CGridView’s row. So it would be nice to have an alternative way to specify imageUrl as PHP expression.

2

Hello Ezze! At this moment the easy way would be to extend the cbutton class and put the class in protected/components, could be something like this:




class CButtonColumnImageURL extends CButtonColumn

{


    /**

     * Renders a link button.

     * @param string $id the ID of the button

     * @param array $button the button configuration which may contain 'label', 'url', 'imageUrl' and 'options' elements.

     * See {@link buttons} for more details.

     * @param integer $row the row number (zero-based)

     * @param mixed $data the data object associated with the row

     */

    protected function renderButton($id, $button, $row, $data)

    {

        if (isset($button['visible']) && !$this->evaluateExpression($button['visible'], array('row' => $row, 'data' => $data))) {

            return;

        }

        $label = isset($button['label']) ? $button['label'] : $id;

        $url = isset($button['url']) ? $this->evaluateExpression($button['url'], array('data' => $data, 'row' => $row)) : '#';

        $imageUrl = isset($button['imageUrl']) ? $this->evaluateExpression($button['imageUrl'], array('data' => $data, 'row' => $row)) : '';

        $options = isset($button['options']) ? $button['options'] : array();

        if (!isset($options['title'])) {

            $options['title'] = $label;

        }

        echo CHtml::link(CHtml::image($imageUrl, $label), $url, $options);

    }


}

Then in the cgridview widget you could do something like this:




        array(

            'class' => 'CButtonColumnImageURL',

            'template' => '{customButton}',

            'buttons' => array(

                'customButton' => array(

                    'label' => '',

                    'imageUrl' => 'MyModel::getImage($data->id)',

                    'url' => 'MyModel::getURL($data->id)',

                ),

            ),

        ),