Recaptcha2 'non-object' error in Zend - zend-framework

Question

I'm trying to implement a Recaptcha2 in an old project that uses Zend. I'm using this library for it https://packagist.org/packages/cgsmith/zf1-recaptcha-2
Initially I was getting this error
Uncaught Zend_Exception: No entry is registered for key 'application'
In my _initRecaptcha, I changed the first line from
$config = \Zend_Registry::get('application');
to
$config = \Zend_Registry::get('config')->application;
This is my _initRecaptcha now
public function _initRecaptcha()
{
$config = \Zend_Registry::get('config')->application;
$params = $config->recaptcha->toArray();
$params['messageTemplates'] = [
\Cgsmith\Validate\Recaptcha::INVALID_CAPTCHA => 'The captcha was invalid', // set custom/translated message
\Cgsmith\Validate\Recaptcha::CAPTCHA_EMPTY => 'The captcha must be completed'
];
\Zend_Registry::set('recaptcha', $params);
}
But now I am getting this error
Trying to get property of non-object in /var/www/my-site/application/Bootstrap.php on line 79
Line 79 is the first line in _initRecaptcha
Can anyone what I need to change?
Thanks.

Answer 1

The library seems to be assuming your config is stored in the registry under the key 'application' (which seems questionable to me). You could either add a method to your bootstrap that sets this up (see their example: https://github.com/cgsmith/zf1-recaptcha-2/blob/master/example/application/Bootstrap.php#L13-L18), or change the code to not require it:
public function _initRecaptcha()
{
$params = $this->getOptions()['recaptcha'];
$params['messageTemplates'] = [
\Cgsmith\Validate\Recaptcha::INVALID_CAPTCHA => 'The captcha was invalid', // set custom/translated message
\Cgsmith\Validate\Recaptcha::CAPTCHA_EMPTY => 'The captcha must be completed'
];
\Zend_Registry::set('recaptcha', $params);
}
(It's a long time since I used ZF1 but I think that should work.)
Both cases assume you've added recaptcha lines to your application.ini per the library instructons.