Yii CGridView and SQL Count - php

Question

I'm trying to load a cGridView with the results of a query between two tables (charity and votes).
Trying to show the number of votes in the vote table for a charity. The vote table has a FK to the charity table.
I could do this in SQL with a left join, but cGridView requires a CActiveDataProvider object to display the data and I am unsure how I can join the two tables to return a result that not only counts, but also doesn't show any results that are equal to 0 and ordered by the votes.
I currently am doing:
in the Vote Model:
public function relations()
{
return array(
'voteCount'=>array(self::STAT, 'Vote', 'charity_id'),
);
}
charity_id being the FK for the charity table.
Then to build the CGridView widget:
$criteria=new CDbCriteria(array(
'with' => 'voteCount',
));
$dataProvider=new CActiveDataProvider('Charity', array(
'pagination' => false,
'criteria' => $criteria,
));
$this->widget('zii.widgets.grid.CGridView', array(
'dataProvider'=>$dataProvider,
'ajaxUpdate'=>true,
'columns'=>array(
'Name',
array(
'name'=>'vote.voteCount',
'value'=>'CHtml::encode($data->voteCount)',
),
),
));
Right now it's returning multiple results and I can't seem to figure out how to sort and add a where clause as well.
Any help?

Answer 1

Try add to Charity model
public function relations()
{
return array(
'vote'=>array(self::HAS_ONE, 'Vote', 'charity_id'),
);
}
$this->widget('zii.widgets.grid.CGridView', array(
'dataProvider'=>$dataProvider,
'ajaxUpdate'=>true,
'columns'=>array(
'Name',
array(
'name'=>'Vote Count',
'value'=>'CHtml::encode($data->vote->voteCount)',
),
),
));

Answer 2

You need some minor changes in
Vote.php (Vote Model)
public function relations()
{
return array(
'voteCount'=>array(self::STAT, 'Vote', 'charity_id'),
);
}
Add a field in attributeLabels()
'voteCount'=>'Votes',
and In CGridView add the 'Votes' column
$this->widget('zii.widgets.grid.CGridView', array(
'dataProvider'=>$dataProvider,
'ajaxUpdate'=>true,
'columns'=>array(
'Name',
'Votes',
),
));