how to modify the django admin urls?

Question

Hi all,

So i have a page with the following url format: http://tld/admin/main/report/, and i would like to pass a get request to the end to filter the queryset: ?q=+2 is all of my report for example. In the ReportAdmin(ModelAdmin), when overriding queryset(self, request), inside that, i'd like to do request.GET.get('somevar'), but the somevar is only good with q, not with anything else (will switch to e, which is error, if passed anything else). I've discovered that q is used for search query string, so there is a conflict. Is there any way of adding new parameter variable to the list?

Thanks a lot!

Jason