DataMapper ORM v1.8.2

[eluser]matyhaty[/eluser]
Hi All

Struggling to do a many/many relationship pull....
Ill try and explain this as best as possible.......

A task has one or more departments who are dealing with the Task
A user has one or more departments.

Thus, I would like to get all tasks for 'a user' which are related to any of that users' department(s)
This is easy if the user has one department, but cant seem to work it out if they have more than one.....

The code which would sorta do it is this:

Code:

$t = new Task();
$res = $t->where_related_department('code', 'OPS')->where_related_department('code', 'PRO')->get();

(which doesnt work)

Running either of these seperatly work fine....

Code:

$t = new Task();
$res = $t->where_related_department('code', 'OPS')->get();
or
$t = new Task();
$res = $t->where_related_department('code', 'PRO')->get();

As the system get more complex with more filters it would be good to further that still...
E.g. Show all tasks which are related to departments, depots (and other models) which are related to 'a user'

Is this possible?

Thanks in advance.