CakePHP ajax post keeps returning 400 Bad Request

Question

I am tring to use an ajax post to an action. GET requests work fine but when I try to POST I see a \'400 Bad Request\' in firebug and the view return a \'Black hole\' response.<

Answer 1

Joseph's answer was missing one detail for me. My form and ajax call was in index.ctp and was calling /controller/edit.ctp so my $this->Form->create call needed 'action'=>'/controller/edit' added to it.