add fix variable into every url location

[zador]

Hi,

 

exist any posibility for add fix variable into every url location?

 

before user registration and before enter on the shop i need select user group:

 

student? - profesor? - institution?

 

after select id group i want send this variable on every page on PS for load categories, content and prices for this group. user can go back and select other id group and load other categories, other content and other prices.

 

http://www.i-culture-online.com/tienda/es/?ig=5

 

in first load i send /?ig=5  (id_group = 5), and i load content as id group 5 but when i change category or product, variable "ig" is disappear.

 

in class/group.php i change this line

 

if (Validate::isLoadedObject($customer))
            $id_group = (int)$customer->id_default_group;
        else
            $id_group = $_GET["ig"];

 

// when id group is not defined, get id group from URL

 

but how i can maintain this variable in URL when location is change?

 

thank you for any answer, best regards, Jozef

Edited July 7, 2014 by zador (see edit history)

[zador]

i solved it with cookie, but i would like know how make it without cookies