var-picker not update when edges change in node panel

[HiChen404]

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Dify version

0.8.0

Cloud or Self Hosted

Cloud

Steps to reproduce

When focusing on a node and changing the connection, the variables in the var-picker will not be updated to the latest.

https://github.com/user-attachments/assets/d51d62e5-0c65-4aee-822d-b91d6b268a56

✔️ Expected Behavior

var list updated to the latest when connected edges change.

❌ Actual Behavior

Refresh only when switching node panel.

[dosubot[bot]]

Hey @HiChen404! 👋 I'm here to help you with bug fixes, questions, and more while you wait for a human maintainer. Let's squash those bugs together!

The var-picker does not update when edges change in the node panel in Dify version 0.8.0 because the current implementation lacks logic to update the var-picker when edges are modified. The existing code handles various node interactions but does not include functionality to update the var-picker based on edge changes ^[1].

To resolve this issue, you need to add logic to update the var-picker whenever edges are changed. This could involve adding a function that specifically updates the var-picker and calling it within the relevant edge-handling functions. The useEdgesInteractions hook includes functions like handleEdgesChange that manage edge interactions and could be extended to trigger updates to the var-picker ^[2].

Additionally, leveraging the event emitter context (useEventEmitterContextContext) could help trigger updates to the var-picker by subscribing to relevant events and dispatching commands accordingly ^[3].

To continue talking to Dosu, mention @dosu.

[iamjoel]

Fixed: https://github.com/langgenius/dify/pull/8259