fix(rnd): Fix broken list input pin execution ordering & unlinked dyn…

…amic pins on save (#8108)

autogpt_platform/backend/backend/blocks/time_blocks.py

@@ -23,7 +23,7 @@ def __init__(self):
                 {"trigger": "Hello", "format": "{time}"},
             ],
             test_output=[
-                ("time", time.strftime("%H:%M:%S")),
+                ("time", lambda _: time.strftime("%H:%M:%S")),
             ],
         )
 

autogpt_platform/backend/backend/data/execution.py

@@ -396,19 +396,19 @@ def merge_execution_input(data: BlockInput) -> BlockInput:
 
     # Merge all input with <input_name>_$_<index> into a single list.
     items = list(data.items())
-    list_input: list[Any] = []
+
     for key, value in items:
         if LIST_SPLIT not in key:
             continue
         name, index = key.split(LIST_SPLIT)
         if not index.isdigit():
-            list_input.append((name, value, 0))
-        else:
-            list_input.append((name, value, int(index)))
+            raise ValueError(f"Invalid key: {key}, #{index} index must be an integer.")
 
-    for name, value, _ in sorted(list_input, key=lambda x: x[2]):
         data[name] = data.get(name, [])
-        data[name].append(value)
+        if int(index) >= len(data[name]):
+            # Pad list with empty string on missing indices.
+            data[name].extend([""] * (int(index) - len(data[name]) + 1))
+        data[name][int(index)] = value
 
     # Merge all input with <input_name>_#_<index> into a single dict.
     for key, value in items:

autogpt_platform/frontend/src/lib/utils.ts

@@ -152,21 +152,22 @@ export function setNestedProperty(obj: any, path: string, value: any) {
 
 export function removeEmptyStringsAndNulls(obj: any): any {
   if (Array.isArray(obj)) {
-    // If obj is an array, recursively remove empty strings and nulls from its elements
-    return obj
-      .map((item) => removeEmptyStringsAndNulls(item))
-      .filter(
-        (item) =>
-          item !== null && (typeof item !== "string" || item.trim() !== ""),
-      );
+    // If obj is an array, recursively check each element,
+    // but element removal is avoided to prevent index changes.
+    return obj.map((item) =>
+      item === undefined || item === null
+        ? ""
+        : removeEmptyStringsAndNulls(item),
+    );
   } else if (typeof obj === "object" && obj !== null) {
     // If obj is an object, recursively remove empty strings and nulls from its properties
     for (const key in obj) {
       if (obj.hasOwnProperty(key)) {
         const value = obj[key];
         if (
           value === null ||
-          (typeof value === "string" && value.trim() === "")
+          value === undefined ||
+          (typeof value === "string" && value === "")
         ) {
           delete obj[key];
         } else {