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https://issues.apache.org/jira/browse/NIFI-16217?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Rob Fellows updated NIFI-16217:
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Status: Patch Available (was: In Progress)
> UI - Unsaved Parameter Context changes silently lost when navigating to an
> inherited Parameter Context
> ------------------------------------------------------------------------------------------------------
>
> Key: NIFI-16217
> URL: https://issues.apache.org/jira/browse/NIFI-16217
> Project: Apache NiFi
> Issue Type: Bug
> Components: Core UI
> Reporter: Rob Fellows
> Assignee: Rob Fellows
> Priority: Major
> Time Spent: 10m
> Remaining Estimate: 0h
>
> h2. In the Edit Parameter Context dialog, unsaved edits are silently
> discarded in the following sequence:
> # Open Parameter Context A for edit and change a local parameter (do not
> click Apply).
> # On an inherited parameter, use **Go to** to open Parameter Context B (the
> inherited context).
> # In Parameter Context B, click Apply.
> Only changes made in step 2's destination context are saved. The unsaved
> change from step 1 in Parameter Context A is lost with no warning or
> confirmation.
> h3. Expected behavior
> When navigating away from an Edit Parameter Context dialog that has unsaved
> changes (for example via **Go to** on an inherited parameter), the UI should
> either:
> - prompt the user to save or discard pending changes before navigating, or
> - otherwise prevent silent loss of those changes
> consistent with save-before-leaving patterns used elsewhere in the UI.
> h3. Notes
> Parameter Context updates are asynchronous (submit / poll / delete update
> request) and the edit dialog shows a review/progress UI after Apply. Any fix
> should account for that flow rather than assuming a simple synchronous save.
> h3. Steps to reproduce
> # Create Parameter Context B with at least one parameter.
> # Create Parameter Context A that inherits from B.
> # Edit Parameter Context A, modify a local parameter, and do **not** Apply.
> # In the Parameters table, open the menu on an inherited parameter and choose
> **Go to**.
> # Observe that navigation proceeds immediately to Parameter Context B with no
> prompt.
> # Optionally Apply on B, then return to A — the earlier local edit is gone.
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