Something along the way public function init(){ if($this->config->ajax && $this->input->InputfieldMyAjaxBomb){ // handle your ajax request header('Content-Type: application/json'); echo "{'yo':'yo'}"; exit; } } .. in your Inputfield init(). Then you can make a post or get AJAX request to any backend or public url the current url containing the key InputfieldMyAjaxBomb=1. Edit: Originally I didn't really mean that there's "no need". Well, of course a hidd
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