javascript - how do i use cakephp 2.2 jshelper to call other jshelper functions?

Question

I have the following code:

$this->Js->get('#get_meters_today')->event('click',
    $this->Js->request(
        array('action' => 'getMetersToday'),
        array('async' => true, 'update' => '#meters_today')
    )
);

$this->Html->scriptBlock(
    $this->Js->domReady(
        $this->Js->request(
            array('action' => 'getMetersToday'),
            array('async' => true, 'update' => '#meters_today')
        )
    ), array('inline' => false)
);

what I want to do is just have the Js->request written once and referred to by the click method and the domReady method. How do I do this?

Thanks