Modified tweak behaviour to be overridable if env variable is set on the GUI.

Author: dkaushik94

src/backend/base/langflow/processing/process.py

@@ -171,16 +171,33 @@ def apply_tweaks(node: dict[str, Any], node_tweaks: dict[str, Any]) -> None:
                 for k, v in tweak_value.items():
                     k_ = "file_path" if field_type == "file" else k
                     template_data[tweak_name][k_] = v
+                # If the user didn't explicitly set load_from_db in the dict,
+                # we default to False for the override.
+                if "load_from_db" not in tweak_value and "load_from_db" in template_data[tweak_name]:
+                    template_data[tweak_name]["load_from_db"] = False
             else:
                 key = "file_path" if field_type == "file" else "value"
                 template_data[tweak_name][key] = tweak_value
+                if "load_from_db" in template_data[tweak_name]:
+                    template_data[tweak_name]["load_from_db"] = False
 
 
 def apply_tweaks_on_vertex(vertex: Vertex, node_tweaks: dict[str, Any]) -> None:
     for tweak_name, tweak_value in node_tweaks.items():
         if tweak_name and tweak_value and tweak_name in vertex.params:
             vertex.params[tweak_name] = tweak_value
 
+            # Determine if we should load from DB
+            tweak_load_from_db = False
+            if isinstance(tweak_value, dict):
+                tweak_load_from_db = tweak_value.get("load_from_db", False)
+
+            if tweak_load_from_db:
+                if tweak_name not in vertex.load_from_db_fields:
+                    vertex.load_from_db_fields.append(tweak_name)
+            elif tweak_name in vertex.load_from_db_fields:
+                vertex.load_from_db_fields.remove(tweak_name)
+
 
 def process_tweaks(
     graph_data: dict[str, Any], tweaks: Tweaks | dict[str, dict[str, Any]], *, stream: bool = False

src/lfx/src/lfx/processing/process.py

@@ -196,16 +196,33 @@ def apply_tweaks(node: dict[str, Any], node_tweaks: dict[str, Any]) -> None:
                 for k, v in tweak_value.items():
                     k_ = "file_path" if field_type == "file" else k
                     template_data[tweak_name][k_] = v
+                # If the user didn't explicitly set load_from_db in the dict,
+                # we default to False for the override.
+                if "load_from_db" not in tweak_value and "load_from_db" in template_data[tweak_name]:
+                    template_data[tweak_name]["load_from_db"] = False
             else:
                 key = "file_path" if field_type == "file" else "value"
                 template_data[tweak_name][key] = tweak_value
+                if "load_from_db" in template_data[tweak_name]:
+                    template_data[tweak_name]["load_from_db"] = False
 
 
 def apply_tweaks_on_vertex(vertex: Vertex, node_tweaks: dict[str, Any]) -> None:
     for tweak_name, tweak_value in node_tweaks.items():
         if tweak_name and tweak_value and tweak_name in vertex.params:
             vertex.params[tweak_name] = tweak_value
 
+            # Determine if we should load from DB
+            tweak_load_from_db = False
+            if isinstance(tweak_value, dict):
+                tweak_load_from_db = tweak_value.get("load_from_db", False)
+
+            if tweak_load_from_db:
+                if tweak_name not in vertex.load_from_db_fields:
+                    vertex.load_from_db_fields.append(tweak_name)
+            elif tweak_name in vertex.load_from_db_fields:
+                vertex.load_from_db_fields.remove(tweak_name)
+
 
 def process_tweaks(
     graph_data: dict[str, Any], tweaks: Tweaks | dict[str, dict[str, Any]], *, stream: bool = False