Question

I have GoodsCats model with next relations:

public function relations(){
  return array(
    'GoodsCatsContent' => array(self::HAS_MANY, 'GoodsCatsContent', 'parent_id'),
  );
}

And now I want to find all GoodsCats elements but with one child element (with specific language_id):

$cats = GoodsCats::model()->with(
  array(
    'GoodsCatsContent'=>array(
      'on'=>'languages_id = 1'
    )
  )
)->findAll();

And recive an array where each elemt is like GoodsCats.id=>GoodsCatsContent.name:

CHtml::listData(cats, 'id', 'name')

But for now I’m getting an error GoodsCats.name not defined.
When I set GoodsCats relations as self::HAS_ONE all works good but I can’t change it for whole project.
Is it posible somehow set model()->with() to use not defined relation type but a specific one?

UPD my models rules:

GoodsCatsContent:

public function rules()
{
    return array(
        array('parent_id', 'required'),
        array('active', 'numerical', 'integerOnly'=>true),
        array('parent_id', 'length', 'max'=>10),
        array('name, seo_title, seo_keywords, seo_description', 'length', 'max'=>255),
        array('short_content, content', 'safe'),
        array('id, parent_id, active, name, short_content, content, seo_title, seo_keywords, seo_description', 'safe', 'on'=>'search'),
    );
}

GoodsCats:

public function rules()
{
    return array(
        array('active, prior', 'numerical', 'integerOnly'=>true),
        array('photo', 'length', 'max'=>255),
        array('id, photo, active, prior', 'safe', 'on'=>'search'),
    );
}

Answer 1

You can’t dynamically change the relation type.

But, since you are sure that using language_id = 1 gives you only one related GoodsCatsContent record, you can do this instead of using listData() :

$myList=array();
foreach ($cats as $acat){
    $myList[$acat->id]=isset($acat->GoodsCatsContent[0]->name)? $acat->GoodsCatsContent[0]->name :''; 
    // you need isset incase some of the GoodsCats don't have a related GoodsCatsContent
}
// you can now use $myList as you would have used the array returned by listData()

Because this is a HAS_MANY relation, each GoodsCats will have x number of related GoodsCatsContent records, and therefore the relation will return an array always, even if there is only 1 related record, and an empty array if there is no related record. So when there is 1 related record, the relationName[0] will return that record.