codeant-ai-for-open-source[bot] commented on PR #38568:
URL: https://github.com/apache/superset/pull/38568#issuecomment-4037720273
## **Sequence Diagram**
This PR lets dashboard authors pre-select which time grain options are
available in a native time grain filter and ensures those selections are stored
and used to filter the runtime options while remaining backward compatible.
```mermaid
sequenceDiagram
participant Author as Dashboard author
participant ConfigUI as Filter config UI
participant Dataset as Dataset metadata
participant Storage as Dashboard storage
participant Viewer as Dashboard viewer
participant Filter as Time grain filter
Author->>ConfigUI: Open time grain filter config
ConfigUI->>Dataset: Load supported time grains
Dataset-->>ConfigUI: Return list of time grain choices
Author->>ConfigUI: Select subset of allowed time grains
ConfigUI->>Storage: Save filter config with optional time_grains
allowlist
Viewer->>Filter: Open time grain filter on dashboard
Filter->>Storage: Read filter config and data
alt time_grains allowlist present
Filter-->>Viewer: Show only allowed time grain options
else time_grains missing or empty
Filter-->>Viewer: Show all available time grain options
end
```
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