FIXBUG: когда не выбран порт то вылетало

abonapp/views.py

@@ -851,10 +851,13 @@ def save_user_dev_port(request, gid, uid):
     if request.method != 'POST':
         messages.error(request, _('Method is not POST'))
         return redirect('abonapp:abon_home', gid, uid)
-    user_port = request.POST.get('user_port')
+    user_port = mydefs.safe_int(request.POST.get('user_port'))
     is_dynamic_ip = request.POST.get('is_dynamic_ip')
     try:
-        port = DevPort.objects.get(pk=user_port)
+        if user_port == 0:
+            port = None
+        else:
+            port = DevPort.objects.get(pk=user_port)
         abon = models.Abon.objects.get(pk=uid)
         abon.dev_port = port
         if abon.is_dynamic_ip != is_dynamic_ip: