4 files changed, 28 insertions, 14 deletions
diff --git a/src/client/views/GlobalKeyHandler.ts b/src/client/views/GlobalKeyHandler.ts
index b9b771027..89292a445 100644
--- a/src/client/views/GlobalKeyHandler.ts
+++ b/src/client/views/GlobalKeyHandler.ts
@@ -226,7 +226,7 @@ export class KeyManager {
                 if (e.target !== document.body) {
                     stopPropagation = false;
                     preventDefault = false;
-                };
+                }
                 break;
             case "v":
                 stopPropagation = false;
diff --git a/src/fields/List.ts b/src/fields/List.ts
index c9e4bd3c1..dca8d111c 100644
--- a/src/fields/List.ts
+++ b/src/fields/List.ts
@@ -43,7 +43,7 @@ const listHandlers: any = {
             }
         }
         const res = list.__fields.push(...items);
-        this[Update]();
+        this[Update]("$addToSet");
         return res;
     }),
     reverse() {
@@ -314,7 +314,7 @@ class ListImpl<T extends Field> extends ObjectField {
         // console.log(diff);
         const update = this[OnUpdate];
         // update && update(diff);
-        update?.();
+        update?.(diff);
     }
 
     private [Self] = this;
diff --git a/src/fields/util.ts b/src/fields/util.ts
index 4da9fce74..90446f531 100644
--- a/src/fields/util.ts
+++ b/src/fields/util.ts
@@ -371,17 +371,19 @@ export function deleteProperty(target: any, prop: string | number | symbol) {
 export function updateFunction(target: any, prop: any, value: any, receiver: any) {
     let current = ObjectField.MakeCopy(value);
     return (diff?: any) => {
-        if (true || !diff) {
+        if (diff === "$addToSet") {
+            diff = { '$addToSet': { ["fields." + prop]: SerializationHelper.Serialize(value) } };
+        } else {
             diff = { '$set': { ["fields." + prop]: SerializationHelper.Serialize(value) } };
-            const oldValue = current;
-            const newValue = ObjectField.MakeCopy(value);
-            current = newValue;
-            if (!(value instanceof CursorField) && !(value?.some?.((v: any) => v instanceof CursorField))) {
-                UndoManager.AddEvent({
-                    redo() { receiver[prop] = newValue; },
-                    undo() { receiver[prop] = oldValue; }
-                });
-            }
+        }
+        const oldValue = current;
+        const newValue = ObjectField.MakeCopy(value);
+        current = newValue;
+        if (!(value instanceof CursorField) && !(value?.some?.((v: any) => v instanceof CursorField))) {
+            UndoManager.AddEvent({
+                redo() { receiver[prop] = newValue; },
+                undo() { receiver[prop] = oldValue; }
+            });
         }
         target[Update](diff);
     };
diff --git a/src/server/websocket.ts b/src/server/websocket.ts
index b33e76c0b..7d13480f5 100644
--- a/src/server/websocket.ts
+++ b/src/server/websocket.ts
@@ -201,7 +201,7 @@ export namespace WebSocket {
 
     function setField(socket: Socket, newValue: Transferable) {
         Database.Instance.update(newValue.id, newValue, () =>
-            socket.broadcast.emit(MessageStore.SetField.Message, newValue));
+            socket.broadcast.emit(MessageStore.SetField.Message, newValue));  // broadcast set value to all other clients
         if (newValue.type === Types.Text) {  // if the newValue has sring type, then it's suitable for searching -- pass it to SOLR
             Search.updateDocument({ id: newValue.id, data: { set: (newValue as any).data } });
         }
@@ -271,7 +271,19 @@ export namespace WebSocket {
         return typeof value === "string" ? value : value[0];
     }
 
+    function updateListField(socket: Socket, diff: Diff, results?: Transferable): void {
+        diff.diff.$set = diff.diff.$addToSet;  // convert add to set to a query of the current fields, and then a set of the composition of the new fields with the old ones
+        delete diff.diff.$addToSet;
+        const updatefield = Array.from(Object.keys(diff.diff.$set))[0];
+        const list = (results as any).fields?.[updatefield.replace("fields.", "")].fields;
+        list.forEach((item: any) => !diff.diff.$set[updatefield].fields.some((x: any) => x.fieldId === item.fieldId) && diff.diff.$set[updatefield].fields.push(item));
+        Database.Instance.update(diff.id, diff.diff,
+            () => socket.broadcast.emit(MessageStore.UpdateField.Message, diff), false);
+        console.log(results, diff.diff.$set);
+    }
+
     function UpdateField(socket: Socket, diff: Diff) {
+        if (diff.diff.$addToSet) return GetRefField([diff.id, (result?: Transferable) => updateListField(socket, diff, result)]); // would prefer to have Mongo handle list additions direclty, but for now handle it on our own
         Database.Instance.update(diff.id, diff.diff,
             () => socket.broadcast.emit(MessageStore.UpdateField.Message, diff), false);
         const docfield = diff.diff.$set || diff.diff.$unset;