Question

I have this code:

echo $form->dropDownList($model, 
                 'defaultPrinterId', 
                  CHtml::listData(Printer::model()->findAll(), 'id', 'name'), 
                  array('prompt' => '-- None--')); 

Which gives me a dropdown list like this:

<select id="LabelType_defaultPrinterId" name="LabelType[defaultPrinterId]">
    <option value="">-- None --</option>
</select>

However, when the form posts, it adds a value to my table where the defaultPrinterId is 0. Instead of that, how would I make it null, since it’s a nullable field?

Answer 1

In your controller, after you load the attributes from $_POST do a

$model->defaultPrinterId = $model->defaultPrinterId ? $model->defaultPrinterId : null;

This changes 0 to null otherwise leaves it unmodified.