SigNoz/signoz · warning

ErrCodePublicDashboardInvalidInput

ErrCodePublicDashboardInvalidInput

Error message

widget index is missing from the path

What it means

The public dashboard widget query-range handler requires a widget index path variable ({idx}) in the route. When the mux route match does not include the 'idx' variable, the handler rejects the request with ErrCodePublicDashboardInvalidInput.

Source

Thrown at pkg/modules/dashboard/impldashboard/handler.go:160

		return
	}

	render.Success(rw, http.StatusOK, gettablePublicDashboardData)
}

func (handler *handler) GetPublicWidgetQueryRange(rw http.ResponseWriter, r *http.Request) {
	ctx, cancel := context.WithTimeout(r.Context(), 10*time.Second)
	defer cancel()

	id, err := valuer.NewUUID(mux.Vars(r)["id"])
	if err != nil {
		render.Error(rw, err)
		return
	}

	widgetIndex, ok := mux.Vars(r)["idx"]
	if !ok {
		render.Error(rw, errors.New(errors.TypeInvalidInput, dashboardtypes.ErrCodePublicDashboardInvalidInput, "widget index is missing from the path"))
		return
	}

	dashboard, err := handler.module.GetDashboardByPublicID(ctx, id)
	if err != nil {
		render.Error(rw, err)
		return
	}

	publicDashboard, err := handler.module.GetPublic(ctx, dashboard.OrgID, valuer.MustNewUUID(dashboard.ID))
	if err != nil {
		render.Error(rw, err)
		return
	}

	widgetIdx, err := strconv.ParseUint(widgetIndex, 10, 64)
	if err != nil {
		render.Error(rw, errors.New(errors.TypeInvalidInput, dashboardtypes.ErrCodePublicDashboardInvalidInput, "invalid widget index"))

View on GitHub (pinned to 5069bf80b0)

Solutions

1. Include the widget index segment in the request URL (e.g. /public/{id}/3/query_range)
2. Verify the route pattern contains {idx}
3. Check gateway/ingress rewrite rules are not dropping the path segment

Example fix

// before
GET /api/v1/dashboards/{publicID}/query_range

// after
GET /api/v1/dashboards/{publicID}/3/query_range

const idxRe = /^\d+$/;
function buildWidgetURL(publicId, idx) {
  if (idx === undefined || idx === null || !idxRe.test(String(idx))) {
    throw new Error('widget index required');
  }
  return `/api/v1/dashboards/${publicId}/${idx}/query_range`;
}

function isValidWidgetIndex(idx) {
  return typeof idx === 'number' && Number.isInteger(idx) && idx >= 0;
}

try { const res = await fetch(url); } catch (e) { /* network */ }
if (res.status === 400 && body.code === 'public_dashboard_invalid_input') { /* rebuild URL with idx */ }

When it happens

Trigger: Issuing GET on a public dashboard widget metrics URL where the {idx} path segment is absent or the route was registered without the {idx} placeholder, so mux.Vars(r)['idx'] is missing.

Common situations: Route registered as /api/v1/query_range instead of /api/v1/{idx}/query_range; client building the URL without appending the widget index; reverse proxy or router rewrite stripping the path segment.

Related errors

• public_dashboard_invalid_input
• ErrCodeRoleInvalidInput
• invalid_input
• invalid_input
• dashboard_invalid_patch

AI-assisted analysis of SigNoz/signoz@5069bf80b0 (2026-08-28). Data as JSON: /api/errors/d2be5b239b3c7e28. Report an issue: GitHub.