How to put contrasting information into a CGridView column based on a condition? - yii

Question

I'm looking into showing/hiding specific column data on a CGridView widget for the Wii Framework.
I have a CButtonColumn which contains 3 buttons. However, on certain conditions, I want to display something different for a particular row.
I have 3 different conditions which determin what gets displayed for particular row.
The following illustrates what I want to do:
| 1 | Title A | [hide][view][update] <-- if (condition == 'a')
| 2 | Title B | [hide][view][update] <-- if (condition == 'a')
| 3 | Title C | display text or link or button <-- if (condition == 'b')
| 4 | Title D | display alternative buttons <-- if (condition == 'c')
What is my best approach to take here?
I can't use 'visible'=> $model->processingStatus != "processed" on the column because this will remove the whole column. I need to target each row insatead.
Should I use the 'visible' parameter on each individual button? I have tried this using the commented out code below but it breaks the page.
FYI: I have successfully tried the 'visible' parameter on the CButtonColumn itself, but its not what I need. Plus not sure which row's status it is reading.
Or should I add a function to the controller? Have it do the if/else statements and return back what is to be displayed. How would this work?
Here is my code:
<?php $this->widget('zii.widgets.grid.CGridView', array(
'id'=>'my-grid',
'dataProvider'=>$model->search(),
'filter'=>$model,
'columns'=>array(
array(
'name'=>'myid',
'header'=>'ID',
),
'Title',
array(
'class'=>'CButtonColumn',
'visible'=> $model->status != "done",
'template'=>'{hide}{view}{update}',
'buttons'=>array(
'hide'=>array(
'label'=>'Hide', //Text label of the button.
'imageUrl'=>Yii::app()->request->baseUrl . '/img/icons/bulb-off.png' //Image URL of the button.
//'click'=>'function(){alert("Toggle Hide!");}', //A JS function to be invoked when the button is clicked.
//'options'=>array(), //HTML options for the button tag.
//'url'=>'javascript:void(0)', //A PHP expression for generating the URL of the button.
//'visible'=> $model->status == "done", //A PHP expression for determining whether the button is visible.
),
'view'=>array(
//Text label of the button.
'label'=>'View',
//Image URL of the button.
'imageUrl'=>Yii::app()->request->baseUrl . '/img/icons/view-record.png'
),
'update'=>array(
'label'=>'Update/Edit',
'imageUrl'=>Yii::app()->request->baseUrl . '/img/icons/edit-pencil.png',
'url'=>'Yii::app()->createUrl("metadataandchapters/create?bookid=" . $data->bookid)',
)
)
)
)
)); ?>
Hope I am making good enough sense here!

Answer 1

You should use visible button option, but it should be a PHP expression string, e.g. :
'visible'=> '$data->status == "done"',
http://www.yiiframework.com/doc/api/1.1/CButtonColumn#buttons-detail

Answer 2

Extend CButtonColumn with your own class, then you should be able to change this function to whatever you need to render or hide buttons or do any changes you want.
/**
* Renders a link button.
* #param string $id the ID of the button
* #param array $button the button configuration which may contain 'label', 'url', 'data-icon', 'imageUrl' and 'options' elements.
* #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)
More details about the function http://www.yiiframework.com/doc/api/1.1/CButtonColumn#renderButton-detail