Query Strings are a total turn off to CodeIgniter

[eluser]floweringmind88[/eluser]
I have spent days trying to just send some variables to the page I am at. It would be really nice if there was a good tutorial on how you do this as this seems to be the method that you think is best.

For example I go to the page:
http://domain.com/page/

Now I want send a variable but I always get a 404 page not found:
http://domain.com/page/variable

This is how my code looks:

class Welcome extends Controller {

function Welcome()
{
parent::Controller();

}

function index()
{
$product_id = $this->uri->segment(2);

$this->load->view('header');
$this->load->view('welcome');
$this->load->view('footer');
}

[eluser]MCrittenden[/eluser]
I believe you're getting a 404 because if there is anything after the controller name in the query string (in your case, the thing after is "variable") it assumes it's a function of that controller. So it's looking for a function named variable and freaking out because there's not one.

Read the URL section of the user guide for more info: http://ellislab.com/codeigniter/user-gui.../urls.html

Try linking to http://domain.com/page/index/variable instead, and change your uri call from "segment(2)" to "segment(3)". That should do it.

[eluser]floweringmind88[/eluser]
Finally!

I didn't get that you had to pass the function first in the segment and then variable.

Thanks so much.

Chris

[eluser]MCrittenden[/eluser]
No problem. Welcome to CI!

[eluser]gtech[/eluser]
you don't have to use url segment if you don't want to either

Code:

function index($product_id)
{
...

will achieve the same thing.

[eluser]MCrittenden[/eluser]
[quote author="gtech" date="1211919526"]you don't have to use url segment if you don't want to either

Code:

function index($product_id)
{
...

will achieve the same thing.[/quote]
I like that! What if no param is passed, could you change $product_id into $product_id=null in the function declaration to handle either case?

I'm still a CI newbie too!

[eluser]gtech[/eluser]
yes you can default the parameter(s) like you suggest.

Code:

function index($product_id=NULL,$somthing_else=2,$and_another='tree')
{