Comment 2 for bug 1304533

Reviewed: https://review.openstack.org/86086
Committed: https://git.openstack.org/cgit/openstack/horizon/commit/?id=301569b81d46e7896f78296a5775f69cf7f8935f
Submitter: Jenkins
Branch: master

commit 301569b81d46e7896f78296a5775f69cf7f8935f
Author: woodm1979 <email address hidden>
Date: Tue Apr 8 10:38:52 2014 -0600

    Fix KeyError in router:AddInterface error handle

    Under some circumstances the exception handling on adding an interface
    to a router will produce a KeyError.

    The exception happens in
    openstack_dashboard/dashboards/project/routers/ports/forms.py in
    AddInterface.populate_subnet_id_choices.

    In the exception handling code, a reverse() is called an argument of
    request.REQUEST['router_id'] which doesn't always exist.

    The fix is quite simple: try to look for it in the initial form data as
    well, and if 'router_id' is in neither location, fall-back to the index
    page.

    Change-Id: I74eaf8cd024d2929fed3d4e00b644e5850e2d5b3
    Closes-Bug: 1304533