page from database

[eluser]Unknown[/eluser]
Hi!

I like this:
http://www.domain.com/lang/aboutus - it found DB, page table, but lang class no method
http://www.domain.com/lang/products - it found DB, page table, but lang class no method
http://www.domain.com/lang/contact - it not found DB, page table, but lang class method
...
this pages from database (SELECT * FROM page WHERE page_title = 'aboutus')
(page_title = $this->uri->segment(2))

IF ("select" return rows = 0) THEN
call contact() method,
ELSEIF ("select" return 1 rows) THEN
$this->load->view(DB->page_title);

achieved this somehow?