FIX: dbeditor: allow hybird operation

src/components/db-editor/APIObjectDBEditor.vue

@@ -87,7 +87,7 @@ export default {
           if (e[0] in new_params && this.object_definition.attributes[e[0]].data_type.endsWith('_array')) {
             new_params[e[0]].push(e[1])
           } else {
-            if (this.object_definition.attributes[e[0]].data_type.endsWith('_array')) {
+            if (e[0] in this.object_definition.attributes && this.object_definition.attributes[e[0]].data_type.endsWith('_array')) {
               new_params[e[0]] = [e[1]]
             } else {
               new_params[e[0]] = e[1]