[mv] how I can dynamically generate "Routes" for each item?

[Mark Stosberg <mark@summersault.com>]

******    message to minivend-users from Mark Stosberg <mark@summersault.com>     ******


Hello,

  I'm working with MV4 and am setting up a marketplace system where many
sellers can sign up. When someone shops at the site they can put items
from many different vendors in one cart. Because the number of vendors
is expected to change frequently, and also be potentionally large, it's
not feasible to maintain their Routing information in catalog.cfg. So
I'm interested in a system where I dynamically generate the Routes for
each item at checkout (or rather, 1 route for each distinct vendor
represented in the basket. :). I tried out two ideas for modifying
catalog.cfg, but neither of them worked. Both relied on the idea of
grabbing some information from the environment as needed, which I'm not
sure I can do. 

<snip>
ParseVariables Yes
 [sql  type=list sql="select email, last_name from seller where id =
[scratch seller_id]"]
 Variable    SELLER_EMAIL	 [sql-param email]
 Variable	    SELLER_LAST_NAME [sql-param last_name]
 [/sql]

Route    SELLER	email 	_SELLER_EMAIL__    

Route	SELLER	email	[data base="seller" field="email" key="[scratch seller_id]"]
</snip>

So that approach didn't seem to work. 

Another idea I had was to change configurations through custom perl,
possibly setting variables with a syntax like:
  
   $Config->{key} = $value;

BUT, it's not all clear how to do this with Route, because there are 4
different parts to each data element, so how should I arrange this as a
name = value pair? Or is there an appropriate hash I can adjust? If
there's some documentation I missed on this, a pointer is appreciated. 

Thanks for help on this! 

   -mark

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