fix: Show path of saved file in Save File Component (#8403)

* Show path of saved file in Save File Component

* Update src/backend/base/langflow/components/processing/save_file.py

Co-authored-by: Edwin Jose <edwin.jose@datastax.com>

* [autofix.ci] apply automated fixes

* Update src/backend/base/langflow/components/processing/save_file.py

Co-authored-by: Edwin Jose <edwin.jose@datastax.com>

* [autofix.ci] apply automated fixes

* Switch to message output

---------

Co-authored-by: Edwin Jose <edwin.jose@datastax.com>
Co-authored-by: autofix-ci[bot] <114827586+autofix-ci[bot]@users.noreply.github.com>

src/backend/base/langflow/components/processing/save_file.py

@@ -14,6 +14,7 @@ from langflow.schema import Data, DataFrame, Message
 from langflow.services.auth.utils import create_user_longterm_token
 from langflow.services.database.models.user.crud import get_user_by_id
 from langflow.services.deps import get_session, get_settings_service, get_storage_service
+from langflow.template.field.base import Output
 
 
 class SaveToFileComponent(Component):
@@ -51,7 +52,9 @@ class SaveToFileComponent(Component):
         ),
     ]
 
-    async def save_to_file(self) -> str:
+    outputs = [Output(display_name="File Path", name="result", method="save_to_file")]
+
+    async def save_to_file(self) -> Message:
         """Save the input to a file and upload it, returning a confirmation message."""
         # Validate inputs
         if not self.file_name:
@@ -90,7 +93,10 @@ class SaveToFileComponent(Component):
         # Upload the saved file
         await self._upload_file(file_path)
 
-        return confirmation
+        # Return the final file path and confirmation message
+        final_path = Path.cwd() / file_path if not file_path.is_absolute() else file_path
+
+        return Message(text=f"{confirmation} at {final_path}")
 
     def _get_input_type(self) -> str:
         """Determine the input type based on the provided input."""