Fixed /api/nodes functionality.

Data/server.py

@@ -2,6 +2,7 @@ from flask import Flask, send_from_directory, jsonify, request, abort
 import os
 import importlib
 import inspect
+from OdenGraphQt import BaseNode
 
 # Determine the absolute path for the React build folder
 build_folder = os.path.join(os.getcwd(), "web-interface", "build")
@@ -20,10 +21,6 @@ workflow_data = {
 }
 
 def import_nodes_from_folder(package_name):
-    """
-    Recursively import all modules from the given package.
-    Returns a dictionary where keys are subfolder names, and values are lists of node names.
-    """
     nodes_by_category = {}
     package = importlib.import_module(package_name)
     package_path = package.__path__[0]
@@ -39,7 +36,9 @@ def import_nodes_from_folder(package_name):
                 try:
                     module = importlib.import_module(module_name)
                     for name, obj in inspect.getmembers(module, inspect.isclass):
-                        if hasattr(obj, "NODE_NAME"):
+                        # Filter out only actual node classes you define:
+                        if (issubclass(obj, BaseNode) 
+                            and obj.__module__ == module.__name__):
                             if category_name not in nodes_by_category:
                                 nodes_by_category[category_name] = []
                             nodes_by_category[category_name].append(obj.NODE_NAME)