From 868c39acfe8a9cecb2f7224f5ba3137db25bc157 Mon Sep 17 00:00:00 2001
From: grossmj <grossmj@gns3.net>
Date: Sat, 14 Mar 2020 17:22:43 +1030
Subject: [PATCH] Fix issues with empty project variables. Fixes
 https://github.com/GNS3/gns3-gui/issues/2941

---
 gns3server/controller/topology.py | 5 +++++
 gns3server/schemas/project.py     | 3 ++-
 2 files changed, 7 insertions(+), 1 deletion(-)

diff --git a/gns3server/controller/topology.py b/gns3server/controller/topology.py
index 2c1a6b89..8e764472 100644
--- a/gns3server/controller/topology.py
+++ b/gns3server/controller/topology.py
@@ -171,6 +171,11 @@ def load_topology(path):
             if "console_type" in node and node["console_type"] is None:
                 node["console_type"] = "none"
 
+        # make sure we can open a project with empty variable name
+        variables = topo.get("variables")
+        if variables:
+            topo["variables"] = [var for var in variables if var.get("name")]
+
     try:
         _check_topology_schema(topo)
     except aiohttp.web.HTTPConflict as e:
diff --git a/gns3server/schemas/project.py b/gns3server/schemas/project.py
index 23f23ac2..1c4e50d1 100644
--- a/gns3server/schemas/project.py
+++ b/gns3server/schemas/project.py
@@ -38,7 +38,8 @@ VARIABLES_OBJECT_SCHEMA = {
         "properties": {
             "name": {
                 "type": "string",
-                "description": "Variable name"
+                "description": "Variable name",
+                "minLength": 1
             },
             "value": {
                 "type": "string",