[D] ECharts Configuration Overrides not working for me. [superset]

["ybulani (via GitHub)" <gi...@apache.org>]

GitHub user ybulani created a discussion: ECharts Configuration Overrides not working for me.

Since superset 6.0, Superset provides fine-grained control over ECharts visualizations through theme-level configuration overrides, which allows user to customize the appearance and behavior of all ECharts-based charts without modifying individual chart configurations. But even though configuring the echartsOptionsOverrides and echartsOptionsOverridesByChartType in superset_config.py THEME_DEFAULT, the changes are not reflected in the dashboard.

I have ENABLE_UI_THEME_ADMINISTRATION=True also enabled in the config. 

Any help will be appreciated.

GitHub link: https://github.com/apache/superset/discussions/41620

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Re: [D] ECharts Configuration Overrides not working for me. [superset]

["ybulani (via GitHub)" <gi...@apache.org>]

GitHub user ybulani added a comment to the discussion: ECharts Configuration Overrides not working for me.

the issue was mainly with superset 6.0.0 version, after updating the version to 6.1.0 i was able to make the changes with theme. Thanks for your inputs it really helped with debugging the issue

GitHub link: https://github.com/apache/superset/discussions/41620#discussioncomment-17971249

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Re: [D] ECharts Configuration Overrides not working for me. [superset]

["VectorPeak (via GitHub)" <gi...@apache.org>]

GitHub user VectorPeak added a comment to the discussion: ECharts Configuration Overrides not working for me.

This usually points to Superset not rendering with the theme object you think it is using, rather than ECharts ignoring the option itself.

The first thing I would check is the interaction with `ENABLE_UI_THEME_ADMINISTRATION=True`. Once theme administration is enabled, the active theme can come from the metadata DB / UI-managed theme configuration. In that case, changing `THEME_DEFAULT` in `superset_config.py` may not affect dashboards that are already using a UI-managed theme. As a quick test, either temporarily disable theme administration or add the same `echartsOptionsOverrides` directly to the active theme in the UI and refresh the dashboard.

A good debugging pattern is to start with an intentionally obvious global override, not a subtle chart-type-specific one:

```python
THEME_DEFAULT = {
 "themeName": "Custom theme",
 "echartsOptionsOverrides": {
 "backgroundColor": "#ffefef",
 "animation": False,
 "textStyle": {
 "fontFamily": "Arial",
 },
 },
 "echartsOptionsOverridesByChartType": {
 "echarts_timeseries_line": {
 "grid": {
 "left": 80,
 "right": 40,
 },
 },
 },
}
```

If `backgroundColor` or `animation` is not changing, the theme override is probably not being loaded at all. If the global override works but `echartsOptionsOverridesByChartType` does not, then the chart type key is probably the issue. The keys need to match the chart plugin / `viz_type`, not necessarily the human-readable chart name. For example, a Time-series Line chart may not be keyed as just `"line"`.

A few concrete things worth checking:

- Confirm the dashboard is using the theme you edited, especially if themes are managed through the UI.
- Restart the Superset web process after changing `superset_config.py`; in Docker/Kubernetes, also make sure the updated config is actually mounted into the running container.
- Hard-refresh the browser or clear frontend cache after changing theme config.
- Try a global `echartsOptionsOverrides` first, then add `echartsOptionsOverridesByChartType` once the global override is visible.
- Check the chart’s actual `viz_type` from the chart metadata / Explore URL / saved chart JSON and use that exact value as the chart-type key.
- Make sure the chart is actually ECharts-based; some visualizations may not go through the ECharts override path.

One subtle point: if a theme has already been created or selected via UI theme administration, updating `THEME_DEFAULT` may only change the configured default, not overwrite the existing stored theme. In that setup, the safer path is to edit the active theme through the theme administration UI, or delete/recreate the stored theme if you want it to be seeded again from config.

If it still does not apply, the most useful details would be the exact `THEME_DEFAULT` block, the chart type you are testing against, and whether the same override works when placed on the active UI-managed theme. That should make it pretty clear whether this is a theme-selection issue, a chart-type-key mismatch, or a specific override being overwritten later by the chart plugin.

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If my answer solved your problem, you can click **answered the question**. I'm really here to help, and along the way I'm also collecting Galaxy Brain badges haha 😆

GitHub link: https://github.com/apache/superset/discussions/41620#discussioncomment-17555551

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