Missing default values for Time breaks grafana 6.7.2

[Humper]

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The Board type contains a Time structure, which has two strings in it. If you don't fill those strings in, and you try to just create a simple board (following roughly the sample code in the README), the call succeeds but the resulting board gives a javascript error because Grafana thinks the board has a timerange but there are no from or to values.

Specifically, on line 55 of grafana's template_srv.ts, we have:

     const from = this.timeRange.from.valueOf().toString();

The structure this.Timerange is not null, but this.timeRange.from is undefined.

This means that very simple code like:

	board := grafana.NewBoard("MY TITLE")
	row := board.AddRow("MY ROW")
	row.Add(grafana.NewGraph("MY GRAPH"))
	response, err := client.SetDashboard(context.Background(), *board, grafana.SetDashboardParams{
		Overwrite: true,
	})

creates a board that breaks Grafana's front end.

This is more a bug with Grafana's API than anything else, but the SDK should work around it IMO.

[GiedriusS]

The Board type contains a Time structure, which has two strings in it. If you don't fill those strings in, and you try to just create a simple board (following roughly the sample code in the README), the call succeeds but the resulting board gives a javascript error because Grafana thinks the board has a timerange but there are no from or to values.

Specifically, on line 55 of grafana's template_srv.ts, we have:

     const from = this.timeRange.from.valueOf().toString();

The structure this.Timerange is not null, but this.timeRange.from is undefined.

This means that very simple code like:

	board := grafana.NewBoard("MY TITLE")
	row := board.AddRow("MY ROW")
	row.Add(grafana.NewGraph("MY GRAPH"))
	response, err := client.SetDashboard(context.Background(), *board, grafana.SetDashboardParams{
		Overwrite: true,
	})

creates a board that breaks Grafana's front end.

This is more a bug with Grafana's API than anything else, but the SDK should work around it IMO.

I wonder what kind of default values Grafana sets for these. Will need to investigate. Perhaps you know? Also, is there some kind of upstream bug report about this?