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fix: 500 error when downloading projects with non-ASCII characters (ex. Cyrillic) names (#8483)

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* fix: encode Cyrillic filenames in Content-Disposition header

* [autofix.ci] apply automated fixes

---------

Co-authored-by: Ilia Krupin <ilia.krupin@tedo.ru>
Co-authored-by: autofix-ci[bot] <114827586+autofix-ci[bot]@users.noreply.github.com>
Co-authored-by: Gabriel Luiz Freitas Almeida <gabriel@langflow.org>
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Ilia Krupin 2025-06-13 19:26:08 +03:00 • committed by GitHub
commit 1236643711
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1 changed files with 6 additions and 2 deletions
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8
src/backend/base/langflow/api/v1/projects.py
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@ -3,6 +3,7 @@ import json
import zipfile import zipfile
from datetime import datetime, timezone from datetime import datetime, timezone
from typing import Annotated from typing import Annotated
from urllib.parse import quote
from uuid import UUID from uuid import UUID
import orjson import orjson
@ -292,17 +293,20 @@ async def download_file(
with zipfile.ZipFile(zip_stream, "w") as zip_file: with zipfile.ZipFile(zip_stream, "w") as zip_file:
for flow in flows_without_api_keys: for flow in flows_without_api_keys:
flow_json = json.dumps(jsonable_encoder(flow)) flow_json = json.dumps(jsonable_encoder(flow))
zip_file.writestr(f"{flow['name']}.json", flow_json) zip_file.writestr(f"{flow['name']}.json", flow_json.encode("utf-8"))
zip_stream.seek(0) zip_stream.seek(0)
current_time = datetime.now(tz=timezone.utc).astimezone().strftime("%Y%m%d_%H%M%S") current_time = datetime.now(tz=timezone.utc).astimezone().strftime("%Y%m%d_%H%M%S")
filename = f"{current_time}_{project.name}_flows.zip" filename = f"{current_time}_{project.name}_flows.zip"
# URL encode filename handle non-ASCII (ex. Cyrillic)
encoded_filename = quote(filename)
return StreamingResponse( return StreamingResponse(
zip_stream, zip_stream,
media_type="application/x-zip-compressed", media_type="application/x-zip-compressed",
headers={"Content-Disposition": f"attachment; filename={filename}"}, headers={"Content-Disposition": f"attachment; filename*=UTF-8''{encoded_filename}"},
) )
except Exception as e: except Exception as e: