Codeigniter DB Query with where, or, and.. and like

Question

I have a query the conditions of it below (minus select, from, etc)

$this->db->where('show_year', $yyyy);
$this->db->or_where('idn', $idn);
$this->db->or_like('post_slug', $idn);

which forms

SELECT * FROM (`nyb_articles`) 
WHERE `show_year` = '2009' 
OR `idn` = 'the' 
AND `post_slug` LIKE '%the%'

However I am looking to have it be more like

SELECT * FROM (`nyb_articles`) 
WHERE `show_year` = '2009' 
AND (`idn` = 'the' OR `post_slug` LIKE '%the%')

My problem is Im not sure if CI's active record supports this notion, and if it does, how would I tackle it, as I can't find notion of it anywhere in the docs. No matter how I change up the like, or_like, where, or_where I can't even nail something similar. So anyone got any ideas? I'd prefer to stay away from a raw query if at all possible, but if I have to prepare one and do it that way, I will, just prefer not to.

Solution

Did you try this?

SELECT * FROM (`nyb_articles`) 
WHERE `show_year` = '2009' AND `idn` = 'the' 
OR `show_year`='2009' AND `post_slug` LIKE '%the%'

I think the following produces expression above:

$this->db->select(...)->from(...)->
where("show_year","2009")->where("idn","the")->
or_where("show_year","2009")->like("post_slug","%the%")