langgenius/dify
1
0
Fork 0
mirror of https://github.com/langgenius/dify.git synced 2026-07-21 12:05:30 -04:00
Code Issues 775 Packages Projects Releases 10 Wiki Activity

[PR #27089] fix: support structured output in streaming mode for LLM node #31664

New Issue
Closed
opened 2026-02-21 20:49:54 -05:00 by yindo · 0 comments
yindo commented 2026-02-21 20:49:54 -05:00
Owner
Copy Link
Copy Source

Original Pull Request: https://github.com/langgenius/dify/pull/27089

State: closed
Merged: Yes

Important

  1. Make sure you have read our contribution guidelines
  2. Ensure there is an associated issue and you have been assigned to it
  3. Use the correct syntax to link this PR: Fixes #<issue number>.

Summary

This PR fixes structured output not working in streaming mode for LLM node.

Problem:
When "Structured Output" is enabled in the LLM node and running in streaming mode (Chatflow), downstream nodes fail with "Variable not found" errors when trying to access structured_output fields.

Solution:
Collect structured_output from streaming chunks and pass it to ModelInvokeCompletedEvent, following the same pattern used in non-streaming mode.

Changes:

  • File: api/core/workflow/nodes/llm/node.py
  • Modified handle_invoke_result method to collect and pass structured_output
  • Total: +6 lines

Testing:

  • ✅ Manually tested with Chatflow using structured output
  • ✅ Downstream nodes can now access structured_output fields without errors
  • ✅ Backward compatible

Fixes #27088

Screenshots

Before After
Error: Variable ['llm', 'structured_output', 'selected_agent'] not found Structured output correctly returned, downstream nodes work normally

Checklist

  • This change requires a documentation update, included: Dify Document
  • I understand that this PR may be closed in case there was no previous discussion or issues. (This doesn't apply to typos!)
  • I've added a test for each change that was introduced, and I tried as much as possible to make a single atomic change.
  • I've updated the documentation accordingly.
  • I ran dev/reformat(backend) and cd web && npx lint-staged(frontend) to appease the lint gods
**Original Pull Request:** https://github.com/langgenius/dify/pull/27089 **State:** closed **Merged:** Yes --- > [!IMPORTANT] > > 1. Make sure you have read our [contribution guidelines](https://github.com/langgenius/dify/blob/main/CONTRIBUTING.md) > 1. Ensure there is an associated issue and you have been assigned to it > 1. Use the correct syntax to link this PR: `Fixes #<issue number>`. ## Summary This PR fixes structured output not working in streaming mode for LLM node. **Problem:** When "Structured Output" is enabled in the LLM node and running in streaming mode (Chatflow), downstream nodes fail with "Variable not found" errors when trying to access `structured_output` fields. **Solution:** Collect `structured_output` from streaming chunks and pass it to `ModelInvokeCompletedEvent`, following the same pattern used in non-streaming mode. **Changes:** - File: `api/core/workflow/nodes/llm/node.py` - Modified `handle_invoke_result` method to collect and pass `structured_output` - Total: +6 lines **Testing:** - ✅ Manually tested with Chatflow using structured output - ✅ Downstream nodes can now access `structured_output` fields without errors - ✅ Backward compatible Fixes #27088 ## Screenshots | Before | After | |--------|-------| | Error: `Variable ['llm', 'structured_output', 'selected_agent'] not found` | Structured output correctly returned, downstream nodes work normally | ## Checklist - [ ] This change requires a documentation update, included: [Dify Document](https://github.com/langgenius/dify-docs) - [x] I understand that this PR may be closed in case there was no previous discussion or issues. (This doesn't apply to typos!) - [x] I've added a test for each change that was introduced, and I tried as much as possible to make a single atomic change. - [ ] I've updated the documentation accordingly. - [ ] I ran `dev/reformat`(backend) and `cd web && npx lint-staged`(frontend) to appease the lint gods
yindo added the pull-request label 2026-02-21 20:49:54 -05:00
yindo closed this issue 2026-02-21 20:49:54 -05:00
Sign in to join this conversation.
No Branch/Tag Specified
Branches Tags
Labels
Clear labels
Knowledge Pipeline
Proposal
WIP
cloud
dependencies
feat:webapp
good first issue
outdated
performance
pull-request
Mirrored from GitHub Pull Request
 python:uv
refactor
size:L
stale
status: accepting prs
status: blocked
status: in discussion
stt & tts
vulnerablity
web
wont-fix
🌊 feat:workflow
🌚 invalid
🐞 bug
👻 feat:rag
💪 enhancement
📚 documentation
🔨 feat:tools
🙋‍♂️ question
🙏 help wanted
🤔 cant-reproduce
🤖 feat:agent
No Label pull-request
Milestone
No items
No Milestone
Projects
Clear projects
No project
Assignees
Clear assignees
yindo
No Assignees
1 Participants
Notifications
Due Date
No due date set.
Dependencies

No dependencies set.

Reference: langgenius/dify#31664
Delete Branch "%!s()"

Deleting a branch is permanent. Although the deleted branch may continue to exist for a short time before it actually gets removed, it CANNOT be undone in most cases. Continue?