yii - The attribute must be specified in the format of "Name:Type:Label", where "Type" and "Label" are optional -

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i have 2 models/mysql tables: user , truck. in truck table have row user_id , in truck _form.php created dropdownlist field user_id populating user table. code:

<?php echo $form->dropdownlist($model,'user_id', chtml::listdata(user::model()->findall(), 'id', 'name')); ?>

and works fine, manage list users in dropdown. when save form data should redirect me cdetailview instead error:

"the attribute must specified in format of "name:type:label", "type" , "label" optional."

could tell me what's causing problem, tried set relations , still error.. thanks


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