How to develop dependant drop down without database - php

Question

I have following code in my controller:
public function getData($property)
{
$data = array(
'type'=>array(
'PC',
'Laptop'
),
'brand'=>array(
'1'=>array(
'ASUS PC',
'DELL PC',
),
'2'=>array(
'ASUS laptop',
'DELL laptop',
),
);
return $data[$property];
}
In my view:
<?= $form->dropDownList($model, 'type',$model->getData('type'), array('class' => 'form-control')) ?>
This code(in the view) returns types.(e.g shows pc and laptop options in the drop down ).
I need to develop dependant drop that will show 'ASUS PC'and 'DELL PC' in the drop down, if user chooses pc option from the the first drop down(type). How can I do it.

Answer 1

1) add two dropdown fields in view page.
<?php echo $form->dropDownList($model, 'type',array('PC'=>'PC','Laptop'=>'Laptops'),
array(
'empty'=>'--Select Product Type---' ,
'ajax' => array(
'type'=>'POST', //request type
'url'=>CController::createUrl('yourcontroller/getData'), //url to call.
'data'=>array('type'=>'js:this.value'),// value to send
'update'=>'#dependent_value', //selector to update
))); ?>
//empty since it will be filled by the other dropdown
<div class="row">
<?php echo CHtml::dropDownList('dependent_value','', array()); ?>
</div>
Controller
public function actionGetData() {
$data = array('type' => array('PC', 'Laptop'), 'brand' => array('1' => array('ASUS PC', 'DELL PC'), '2' => array('ASUS laptop', 'DELL laptop')));
//echo "<pre>";print_r($_POST['type']);die;
if ($_POST['type'] == 'PC') {
$arr = $data['brand'][1];
} elseif ($_POST['type'] == 'Laptop') {
$arr = $data['brand'][2];
} else {
$arr = array();
}
echo CHtml::tag('option', array('value' => $value), CHtml::encode("Select Product Brand--"), true);
foreach ($arr as $value => $name) {
echo CHtml::tag('option', array('value' => $value), CHtml::encode($name), true);
}
}
Note : Make sure to set permission to access this action in accessRules