[ic] RE: mv_ib and overriding default catalog

[interchange-users@icdevgroup.org (Jerry Brady)]

Folks,

I have two products tables in a single catalog and system requirements
are such that the catalog a person is able to search and order from is
determined by a flag in their userdb record.

Searches work because I use the fi=<product table name> to limit the
search based on the type of user that is logged in.  No problem here.

The checkout and backend systems work because I pull product attributes
from the correct  by using things like [item-data <table> price] instead
of [item-price], and so, on.

There is one exception and that is the basket page which loads the
'cart' component by default.  I've modified the cart component to permit
adding a sku and quantity to an existing or empty cart.

If a user enters a sku from their permitted catalog everything is fine.
If a user enters a sku that doesn't exist in either catalog everything
is fine.
If a user enters a sku from the catalog they are not permitted to use
there is a problem.

When the page refreshes the item is added to the cart using data from
the other products table, but of course since I only pull data from the
catalog the user can see, the result is a basket entry with blank values
except for the quantity field.

Using [dump] and combing the docs and archives, I believe that this is
caused by the value of mv_ib="products" (the other products table is
called spot_products) which is set internally by Interchange.

Basically, if the cart gets refreshed with mv_order_item set to a valid
sku from the unauthorized catalog, it gets added to the cart anyway
because mv_ib="products".

How can I override this behavior to tell Interchange to only add items
from a specific product table?

Any help would be appreciated.

- Jerry