cakephp 2.6 confirm message spanish chars fails due to json_encode - json

Question

my view code:
$confirm='¿Está seguro de que quiere borrar el nº 1?';
$this->Html->link(__d('phkapa', 'Send'), array('action' => 'send', $ticket['Ticket']['id']),array('escape' => true, 'confirm'=> $confirm));
result in alert box is :
\u00bfEst\u00e1 seguro de que quiere borrar el n\u00ba 1?
cakephp 2.6 and all app is on utf8 ...
is this a bug on cake 2.6 or am i missing something? or any ideas how to resolve this without changing the core function that returns a string to be used as onclick handler for confirm dialogs.
this function uses json_encode like $message = json_encode($message) and this is the problem, the json_enconde outputs \u00bf instead of ¿
unfortunaly we cant use option JSON_UNESCAPED_UNICODE, that encodes multibyte Unicode characters literally (default is to escape as \uXXXX), since is only available since PHP 5.4.0.

Answer 1

Try encoding the value with PHP first via urlencode. Hopefully CakePHP decodes the values when it produces the HTML output.
$confirm = urlencode ( '¿Está seguro de que quiere borrar el nº 1?' );
$this->Html->link(__d('phkapa', 'Send'), array('action' => 'send', $ticket['Ticket']['id']),array('escape' => true, 'confirm'=> $confirm));
You can also see this JS fiddle https://jsfiddle.net/daeyebpu/ that demonstrates encoding/decoding.
Saludos desde Colorado