How to use sql 'between' command with CakePhp requestAction()

I have an element that grabs data from mysql. Here is my working code:

$this->requestAction('posts/index/sort:id/direction:desc');
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I want to grab only posts between id 1 and 6. How can I run that query via requestAction? Some of scripts that I have tried are below. None is working:

$this->requestAction('posts/index/sort:id/direction:desc', array('id between ? and ?' => array('1,6')));

or

$this->requestAction('posts/index/sort:id/between:1,6/direction:desc');

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If I was going to be calling it via requestAction (!) then I would write a custom method in my controller, then I'd probably pass the two id's into that method as parameters.

Then you can process the parameters and formulate your query.

$this->Model->find('all', 'conditions' => array('id'=>array(1,2,3,4,5,6)));

Not ideal by any means, but I'm not quite sure how else I would approach this kind of problem.

If it's static id's then perhaps

$this->Model->find('all', null, null, 'order' => 'id ASC LIMIT 0,6');

** Now I'm not sure if that would work as I haven't tried it, but I often hacked little things like this into Cake with some success. So perhaps give it a try, be sure to set debug = 2 so you can see the query, or grab DebugKit from OhLo

PS, Dont forget if you write requestAction methods, to check that $this->params['requested'] is true, so you know it come from a requestAction