Sort Cgridview By Custom Field - php

Question

I'm aware that similar questions have been asked, sorry, but I can't for the life of me see what I'm doing wrong. Any help would be greatly appreciated. All I want to do is to add an extra column to a CGridView that displays a total of two values in the database.
These are the steps I've taken:
Database
User(forename, surname, part1, part2)
class User extends Controller:
protected function getTotal($data,$row,$dataColumn){
return $data->getAttribute('part1')+$data->getAttribute('part2');
}
public function actionIndex(){
$dataProvider=new CActiveDataProvider('User');
$this->render('index',array(
'dataProvider'=>$dataProvider,
));
}
class Stadium extends CActiveRecord:
public function rules(){
return array(
array('forename, surname', 'required'),
array('forename', 'surname', 'max'=>50),
array('part1, part2', 'numerical', 'integerOnly'=>true),
array('forename, surname, part1, part2, total', 'safe', 'on'=>'search'),
);
}
public function attributeLabels()
{
return array(
'forename' => 'forename',
'surname' => 'surname',
'part1' => 'part1',
'part2' => 'part2',
'total' => array(
'asc'=>'part1 + part2',
'desc'=>'part1 + part2 desc',
),
);
}
public function search(){
$criteria=new CDbCriteria;
$criteria->compare('forename',$this->forename,true);
$criteria->compare('surname',$this->surname,true);
$criteria->compare('part1',$this->part1);
$criteria->compare('part2',$this->part2);
$criteria->compare('total',$this->part1 + $this->part2,true);
$sort = new CSort();
$sort->attributes = array(
'total'=>array(
'asc'=>'part1 + part2 ASC',
'desc'=>'part1 + part2 DESC',
),
'*',
);
return new CActiveDataProvider(User', array(
'criteria'=>$criteria,
'sort'=>$sort,
));
}
}
view/User/index.php
<?php $this->widget('zii.widgets.grid.CGridView', array(
'itemsCssClass'=>'table table-hover',
'dataProvider'=>$dataProvider,
'template'=>"{items}",
'columns'=>array(
array('name'=>'forename', 'header'=>'Forename'),
array('name'=>'surname', 'header'=>'Surname'),
array('name'=>'total', 'header'=>'Total', 'value'=>array($this, 'getTotal')),
),
)); ?>
<?php $this->endWidget();?>
Thanks a lot for any advice.

Answer 1

Solution:
Ok here is what you need to do:
class Stadium extends CActiveRecord:
public $total; //add this line
//your rules should be fine
//don't know if you need the asc and desc on attribute labels i just have one
'total' => 'Total',
$criteria->compare('total',$this->total); //change this line
//i didn't use a Csort you might be able to but this is they way i did it
return new CActiveDataProvider(User', array(
'criteria'=>$criteria,
'sort'=> array(
'attributes' => array(
'total'=>array(
'asc'=>'(part1 + part2) ASC',
'desc'=>'(part1 + part2) DESC',
),
'*',
),
),
));
//add this inside your model also
public function afterFind() {
parent::afterFind();
$this->total = $this->part1+ $this->part2;
return;
}
Everything else in your model is fine. Then on your CGridView just change the one line:
array('name'=>'total', 'header'=>'Total'), //don't need to set value it is part of the model like other columns now
http://www.yiiframework.com/forum/index.php/topic/21114-create-now-model-variable/
Original Answer:
I believe if you are going to use a CSort object you need to add it to the CActiveDataProvider using setSort() or you don't have to create a CSort you can put it straight into DataProvider.
Option 1:
$sort = new CSort();
$sort->attributes = array(
'total'=>array(
'asc'=>'part1 + part2 ASC',
'desc'=>'part1 + part2 DESC',
),
'*',
);
$data = new CActiveDataProvider(User', array(
'criteria'=>$criteria,
));
$data->setSort($sort);
return $data;
Option 2:
return new CActiveDataProvider(User', array(
'criteria'=>$criteria,
'sort'=> array(
'attributes' => array(
'total'=>array(
'asc'=>'part1 + part2 ASC',
'desc'=>'part1 + part2 DESC',
),
'*',
),
),
));
This may help
http://www.yiiframework.com/wiki/381/cgridview-clistview-and-cactivedataprovider/#hh11
http://www.yiiframework.com/doc/api/1.1/CDataProvider#setSort-detail

Answer 2

Pitchinnate's answer might help you, also, I've noticed a tendency from your part that you put commas where they shouldn't be present. For example
instead of:
$sort->attributes = array(
'total'=>array(
'asc'=>'part1 + part2 ASC',
'desc'=>'part1 + part2 DESC',
),
'*',
);
you need:
$sort->attributes = array(
'total'=>array(
'asc'=>'part1 + part2 ASC',
'desc'=>'part1 + part2 DESC'
),
'*'
);
you should get rid of all the commas put after the last element.