how to find raw query from cakephp query builder code example

Example: combox with auto filter, auto search cakephp

use: selectpicker (bootstrap) + data-live-search: true
  

<?php
    echo $this->Form->input('config_reset_free_credit_month', array(
    'class' => 'form-control selectpicker',
    'data-live-search' => true, 
    'required' 	=> 'required',
    'id'		=> 'config_reset_free_credit_month',
    'label' => "<font class='red'> * </font>" . __d('company', 'config_reset_free_credit_month'),
    'empty' => __("Please select")
    ));
    ?>