Yiimongodbsuite And Dropdown Lists

does anybody know how to populate a dropdown list with a mongodb collection?

$list = CHtml::listData($industryModels, '_id', 'name');

echo $form->dropDownListRow($model, 'industry_id', $list);'

wont work because


is a mongoId object and toString is not automatically called. i get the following error:

PHP warning Illegal offset type…which based on the stack-trace means an object cannot be used as an array key.

so how do i get the mongoId string to use as the key in the dropdown list???

you could add virtual attribute to your model:

function getStringId() {

   return $this->_id->toString();


and use it in CHtml::listData($industryModels, ‘stringId’, ‘name’);

redguy solved half of my problem - the other half is sometimes the dropdown will not select the correct item if the model’s attribute is not stringified. So something like this helps out:

$model->industry_id = (string) $model->industry_id;

echo $form->dropDownListRow($model, 'industry_id', $list);

Or you just set up your model’s afterFind() method to stringify the IDs, and the beforeSave() method to re-MongoIdify them. :)