creating a Yii calculator - yii

Question

I'm new to Yii and MVC, and still trying to figure things out.
I am trying to create a calculator in Yii, below is my file directory for my calculators modules.
Now in my DefaultController.php I have this
<?php
class DefaultController extends Controller
{
public function actions() {
return array(
'page' => array('class' => 'CViewAction'),
);
}
public function actionIndex()
{
$this->render('index');
}
public function actionLoanCalculator()
{
/* loan calculations goes here?? */
}
}
And in my CalculatorsModule.php
<?php
class CalculatorsModule extends CWebModule
{
public function init()
{
// this method is called when the module is being created
// you may place code here to customize the module or the application
// import the module-level models and components
$this->setImport(array(
'calculators.models.*',
'calculators.components.*',
));
$model = new CalculatorsForm();
}
public function beforeControllerAction($controller, $action)
{
if(parent::beforeControllerAction($controller, $action))
{
// this method is called before any module controller action is performed
// you may place customized code here
return true;
}
else
return false;
}
}
Here is my loan-calculator.php
<div class="form-box ">
<div class="form-body">
<?php $form=$this->beginWidget('CActiveForm', array(
'id'=>'calc-form',
'enableAjaxValidation'=>true,
'enableClientValidation'=>true,
'clientOptions'=>array(
'validateOnSubmit'=>true,
'validateOnChange'=>true,
),
)); ?>
<?php echo $form->errorSummary($model); ?>
<div class="form-group">
<?php echo $form->labelEx($model,'price'); ?>
<?php echo $form->textField($model,'price', array('class'=> 'form-control')); ?>
</div>
<div class="form-group">
<?php echo $form->labelEx($model,'downpayment'); ?>
<?php echo $form->textField($model,'downpayment', array('class'=> 'form-control')); ?>
</div>
<div class="form-group">
<?php echo CHtml::submitButton('Submit', array('class' => 'btn btn-lg btn-primary btn-block')); ?>
</div>
<?php $this->endWidget(); ?>
</div><!-- form -->
<?php endif; ?>
</div>
in my models/CalculatorsForm.php folder i have this
<?php
class CalculatorsForm extends CFormModel
{
public $price;
public $downpayment;
/**
* Declares the validation rules.
* title is required
*/
public function rules()
{
return array(
);
}
/**
* Declares attribute labels.
*/
public function attributeLabels()
{
return array(
'price'=>'Price',
'downpayment'=>'Down Payment',
);
}
}
?>
Using ajax, how would I get the input from my loan-calculator.php calculate it in the backend and send the results back to loan-calculator.php
I know i could use JavaScript, but i do not want to share my calculation formula's.
Secondly i'm getting this error when viewing domainname.com/dev/loan-calculator
Undefined variable: model
Any ideas?
Thanks in advance.

Answer 1

Use ajaxSubmitButton:
http://www.yiiframework.com/doc/api/1.1/CHtml#ajaxSubmitButton-detail
You can use this to send the form data to your action and then post back some result and use it with Javascript.
Should look something like this:
<?php
echo CHtml::ajaxSubmitButton('blah txt', array('/default/loanCalculator'), array(
'success' => 'function(data) {
// 'data' will be the output of the loanCalculator action
}',
));
?>