DropDownList from database in YII - php

Question

i am creating yii application first time, i have used following code to create dropdownlist in my view
echo $form->dropDownList($model,'CodeLookupId',Forms::model()->findAll());
it show me error
include(Forms.php): failed to open stream: No such file or directory
C:\wamp\www\LearningYii\protected\views\codelookup_form.php(35):
<?php echo $form->textField($model,'ShortDesc',array('size'=>50,'maxlength'=>50)); ?>
<?php echo $form->error($model,'ShortDesc'); ?>
</div>
<div class="row">
<?php echo $form->dropDownList($model,'CodeLookupId',Forms::model()->findAll()); ?>
</div>
<div class="row buttons">
<?php echo CHtml::submitButton($model->isNewRecord ? 'Create' : 'Save'); ?>
</div>

Answer 1

$opts = CHtml::listData(Codelookup::model()->findAll(),'CodeLookupId','CodeDesc');
echo $form->dropDownList($model,'ParentCodeLookupId',$opts,array('empty'=>''));
This code is working

Answer 2

use CHtml::listData to convert the db object to list data:
Here ID , NAME is your table values which should be used in option value and option text.
<?php
$opts = CHtml::listData(Forms::model()->findAll(),'CodeLookupId','CodeLookupId');
//to check list
print_r($opts);
echo $form->dropDownList($model,'CodeLookupId',$opts);
?>

Answer 3

try hope this will help..
<div class="row">
<?php echo $form->labelEx($model,'username'); ?>
<?php
$records = loaddataform::model()->findAll();
$list = CHtml::listData($records, 'id', 'username');
echo CHtml::dropDownList('loaddataform', $model,
CHtml::listData($records,
'a_id', 'a_name'),
array('empty' => '(Select a name)'));
?>
</div>
and in controller
public function actionloaddata()
{
$model = new loaddataform;
$models = loaddataform::model()->findAll(array('order' => 'a_name'));
$list = CHtml::listData($models, 'a_id', 'a_name');
$this->render('loaddata',array('model'=>$model));
}
This works correctly..it retrives name from database.