def get_doors_you_manage(request):
"""
Give template the list of door names that the staff user can manage,
or 'None'
"""
lua = LockUserAdmin(LockUser, AdminSite())
doors_to_show_qs = lua.get_doors_to_show(request)
return_val = 'None' # avoiding a test for 'None'...
if doors_to_show_qs:
return_val = ', '.join([door.name for door in doors_to_show_qs])
return return_val
