Dropdown list in yii from other controller - list

Question

I want list all objects of my model, and write to file the id of selected model. Using SiteController I render my page but what model I shall use?
$models = myModel::model()->findAll();
$list = CHtml::listData($models, 'id', 'name');
echo CHtml::dropDownList( ???? , $select, $list);

Answer 1

If I get what you're trying to do, You're talking about two models. Like tbl_product => Product and tbl_category => Category.
For demonstration purpose: Say, you want to create a new product and every product must belong to a category, then you might make use of the active dropdown. Using code similar to yours, you can say:
$category = Category::model()->findAll();
$list = CHtml::listData($category, 'id', 'name');
An important thing to note is that CHtml::activeDropDownList() expects different kinds of arguments. The main difference between it and CHtml::dropDownList() is that activeDropDownList( is tied to a Model while dropDownList() isn't.
public static string activeDropDownList(CModel $model, string $attribute, array $data, array $htmlOptions=array ())
public static string dropDownList(string $name, string $select, array $data, array $htmlOptions=array ())
So, using the example, assuming our Product model has a field called category_id, then the dropdown list would be generated using either:
CHtml::activeDropDownList($model, 'category_id', $list);
or if you've created an Activeform object like this:
$form=$this->beginWidget('CActiveForm');
then you could create the dropDown list like this:
$form->dropDownList($model, 'category_id', $list);
Where $model would be the Product model.
I hope this has been helpful.