Load Specific Form Fields Upon Radio Button Selection - ajax

Question

I am a fairly new user of Yii.. Have been using it for less than 2 months..
I am trying to do a registration form that upon loading, it only shows 2 radio buttons(say choice 1 is Person, choice 2 is Organization), when the user selects a choice i want to dynamically display the fields corresponding to his selection using ajax.
Note: I am using the yii-user extension, and I am intending to use the same table to store both Person & Organization users, since they only differ in 3 attributes.
I have been stuck with this problem for 2 days and am not able to solve it..
This is a snippet of my code:
registration.php (view)
<?php $this->pageTitle=Yii::app()->name . ' - '.UserModule::t("Registration");
$this->breadcrumbs=array(
UserModule::t("Registration"),
);
?>
<h1><?php echo UserModule::t("Registration"); ?></h1>
<?php if(Yii::app()->user->hasFlash('registration')): ?>
<div class="success">
<?php echo Yii::app()->user->getFlash('registration'); ?>
</div>
<?php else: ?>
<div class="form">
<?php $form=$this->beginWidget('UActiveForm', array(
'id'=>'registration-form',
'enableAjaxValidation'=>true,
'disableAjaxValidationAttributes'=>array('RegistrationForm_verifyCode'),
'clientOptions'=>array(
'validateOnSubmit'=>true,
),
'htmlOptions' => array('enctype'=>'multipart/form-data'),
)); ?>
<p class="note"><?php echo UserModule::t('Fields with <span class="required">*</span> are required.'); ?></p>
<?php echo $form->errorSummary(array($model,$profile)); ?>
<div class="row">
<?php echo $form->radioButtonList($model, 'profile_type', array(0=>'Person',1=>'Company'),array('separator'=>'', 'labelOptions'=>array('style'=>'display:inline'), 'onclick' =>CHtml::ajax(array("type"=>"GET", "url"=>array("registration/add"), "data"=>array('test'=>'js:this.value'), "update"=>"#test")))); ?>
</div>
RegistrationController.php
public function actionAdd() {
if(Yii::app()->request->isAjaxRequest){
$this->renderPartial("/user/test",array('model'=>$model),false,true);
Yii::app()->end();
}
}
test.php
<?php
$val = $_GET['test'];
if($val == 1){
echo "yes";
//nothing added yet
}
else{
echo "no";
?>
<div class="row">
<?php echo $form->labelEx($model,'username'); ?>
<?php echo $form->textField($model,'username'); ?>
<?php echo $form->error($model,'username'); ?>
</div>
<div class="row">
<?php echo $form->labelEx($model,'email'); ?>
<?php echo $form->textField($model,'email'); ?>
<?php echo $form->error($model,'email'); ?>
</div>
<div class="row">
<?php echo $form->labelEx($model,'password'); ?>
<?php echo $form->passwordField($model,'password'); ?>
<?php echo $form->error($model,'password'); ?>
<p class="hint">
<?php echo UserModule::t("Minimal password length 4 symbols."); ?>
</p>
</div>
<div class="row">
<?php echo $form->labelEx($model,'verifyPassword'); ?>
<?php echo $form->passwordField($model,'verifyPassword'); ?>
<?php echo $form->error($model,'verifyPassword'); ?>
</div>
<?php
}
?>
The erros am recieving when I select Person (choice 0) is the following:
Fatal error: Call to a member function labelEx() on a non-object in test.php
Any help is much appreciated!

Answer 1

The smoking gun is the error Fatal error: Call to a member function labelEx() on a non-object in test.php - it's telling you that labelEx() is not a method. Looking at your view.php, you can see labelEx() is called as a method of $form.
The issue is that when the view test.php is being rendered, it has no idea about the $form you've created in registration.php. test.php only knows about parameters you've passed to it (in this case, only $model).
Instead of using $form->method(), just use CActiveForm::method in your view, e.g.:
<div class="row">
<?php
echo CActiveForm::labelEx($model,'username')
echo CActiveForm::textField($model,'username');
echo CActiveForm::error($model,'username');
?>
</div>
I also combined your consecutive PHP blocks into a single block for easier reading/parsing/etc.