Yii Captcha error - php

Question

I am working in Yii and I am just a beginner and trying my best to learn the framework and here is where I am stuck at :
I have created a user model and the required forms that go with it, and I am trying to implement the Captcha for it :
This is my validation rules in the user model :
$public verifyCode
public function rules()
{
// NOTE: you should only define rules for those attributes that
// will receive user inputs.
return array(
array('username, password, email', 'required'),
array('username','unique'),
array('email','email'),
array('verifyCode', 'captcha', 'allowEmpty'=>!CCaptcha::checkRequirements()),
array('username, password', 'length', 'max'=>45),
array('email', 'length', 'max'=>100),
array('active', 'length', 'max'=>1),
array('created_on, updated_on', 'safe'),
// The following rule is used by search().
// Please remove those attributes that should not be searched.
array('id, username, password, email, created_on, updated_on, active', 'safe', 'on'=>'search'),
);
}
And this is my overriden action() in my userController :
public function actions(){
return array(
'captcha'=>array(
'class' => 'CCaptchaAction',
)
);
}
And this is my view file :
<?php if(CCaptcha::checkRequirements()): ?>
<div class="row">
<?php echo $form->labelEx($model,'verifyCode'); ?>
<div>
<?php $this->widget('CCaptcha'); ?>
<?php echo $form->textField($model,'verifyCode'); ?>
</div>
<div class="hint">Please enter the letters as they are shown in the image above.
<br/>Letters are not case-sensitive.</div>
<?php echo $form->error($model,'verifyCode'); ?>
</div>
<?php endif; ?>
According to me, I think that I am doing everything correctly however, the captcha image is not getting generated. Oh and yes the GD library is installed and if I navigate to the site/contact, there the captcha is generated fine.
I dont seem to understand, where am i getting it wrong.
This is the thing that I see :
The forms seems to be working fine however, I cant see the the captcha image.
Any help would be appreciated.
Regards,

Answer 1

I got the answer, it is because of the access rules that are defined in the controller, I had to modify the controller accessControl like so :
public function accessRules()
{
return array(
array('allow', // allow all users to perform 'index' and 'view' actions
'actions'=>array('index','view','captcha'),
'users'=>array('*'),
),
array('allow', // allow authenticated user to perform every action
'actions'=>array('create','update','admin','delete'),
'users'=>array('#'),
),
array('deny', // deny all users
'users'=>array('*'),
),
);
}