ZF-10804: Zend_Form_Decorator_Captcha render duplication issues
Description
I am not sure if this is a bug or just misunderstanding of the functionality. In summary I basically want to add a wrapper or a break in the html of the captcha like this (notice the
):
I am using this to create the element:
$captcha = new Zend_Form_Element_Captcha('Captcha', array(
'label' => 'Captcha Label',
'captcha' => 'Image',
'captchaOptions' => array(
'captcha' => 'Image',
'width' => 140,
'height' => 50,
'wordLen' => 5,
'fontSize' => 25,
'font' => APPLICATION_PATH . '/../public/fonts/BRLNSDB.TTF',
'imgDir' => APPLICATION_PATH . '/../public/images/captcha',
'imgUrl' => '/images/captcha/'
)
));
$captcha->addPrefixPath('My_Form_Decorator', 'My/Form/Decorator/', 'decorator');
$this->addElement($captcha);
This can be accomplished by creating a Custom Decorator and overwriting the Captcha Decorator something like below :
class My_Form_Decorator_Captcha extends Zend_Form_Decorator_Abstract
{
public function render($content)
{
$element = $this->getElement();
$view = $element->getView();
$placement = $this->getPlacement();
$separator = $this->getSeparator();
$captcha = $element->getCaptcha();
$markup = '' . $captcha->render($view, $element) . '
';
switch ($placement) {
case 'PREPEND':
$content = $markup . $separator . $content;
break;
case 'APPEND':
default:
$content = $content . $separator . $markup;
}
return $content;
}
}
Hopefully there would be an easier way to do a simple thing like this but the problem I cant figure out is is if you DO NOT want to overwrite the captcha say calling it something like: My_Form_Decorator_CustomCaptchaStyle instead of My_Form_Decorator_Captcha
Recreating my element below:
$captcha = new Zend_Form_Element_Captcha('Captcha', array(
'label' => 'Captcha Label',
'captcha' => 'Image',
'captchaOptions' => array(
'captcha' => 'Image',
'width' => 140,
'height' => 50,
'wordLen' => 5,
'fontSize' => 25,
'font' => APPLICATION_PATH . '/../public/fonts/BRLNSDB.TTF',
'imgDir' => APPLICATION_PATH . '/../public/images/captcha',
'imgUrl' => '/images/captcha/'
)
));
$captcha->addPrefixPath('My_Form_Decorator', 'My/Form/Decorator/', 'decorator');
$captcha->setDecorators(array(
'CustomCaptchaStyle',
array('HtmlTag', array('tag' => 'dd')),
'Label'
));
$this->addElement($captcha);
THE PROBLEM is there is no way of deleting or stopping the Zend_Form_Decorator_Captcha from being rendered which always results to 2 captcha images being displayed like the code below:
Ive also tried $captcha->removeDecorator('Captcha') to no avail;
Comments
Posted by Guy Halford-Thompson (guyht) on 2011-01-24T05:32:41.000+0000
I think that the reason for this is that by default Zend_Form_Captcha will add Zend_Form_Decorator_Captcha and so you are basically rendering it twice because both Zend_Form_Decorator_Captcha and My_Form_Decorator_Captcha are being called.
This is not actually a bug so I will mark it as closed, you might have more success querying the mailing list if you are still having issues (form decorators can be a real pain sometimes).
Posted by Kai Uwe (kaiuwe) on 2011-01-24T05:46:08.000+0000
Look also here: ZF-8094