Dashboards: Grafana shows datasource UID instead of name in legend

[dmitriishaburov]

What happened?

We're using datasource variable in dashboard, and putting it into legend in some panels.
Before it was rendering datasource name picked via dropdown.
After update to 10.1.0 and later it's rendering datasource UID instead.

What did you expect to happen?

Panel legend that's using ${datasource} should render datasource name instead of UID

Did this work before?

Yes, last version is 10.0.9

How do we reproduce it?

1. Create datasource kind variable in dashboard, i.e. named datasource
2. Put it into legent in panel, i.e. ${datasource} - usage
3. Datasource will be shown as UID instead of name in dropdown.
   

Is the bug inside a dashboard panel?

No response

Environment (with versions)?

Grafana: 10.2.2
OS: Windows 11
Browser: Chrome

Grafana platform?

Kubernetes

Datasource(s)?

No response

[adela-almasan]

Hi @dmitriishaburov, thank you for submitting this issue. Could you please provide the (correct) last working version? Thanks!

[dmitriishaburov]

@adela-almasan sorry, last working version was 10.0.9, not 10.9.0 😄

[baldm0mma]

Hey @dmitriishaburov , this was an intentional change, and can be reflected in the "breaking changes" category of our CHANGELOG for 10.1.0 (2023-08-22), and was created in this PR: #69259.

From the above CHANGELOG:

"The data source template variable type has changed the way it represents its options. The text field still represents the data source name, but the value has been changed to the uid of the data source. This allows dashboards to declare the currently selected option by uid, however it changes how a datasource template variable value will be rendered by default. If the name of the data source is expected, the variable syntax will have to be changed to specify the text format."

In other words, if you try ${datasourceVariable:text} instead of ${datasourceVariable}, I believe that should solve the issue.

[dmitriishaburov]

Oh, sorry, will pay more attention to that changelog instead of what's new in Grafana X 😢
Thanks for explanation

[baldm0mma]

Oh, sorry, will pay more attention to that changelog instead of what's new in Grafana X 😢 Thanks for explanation

No worries. There's a lot of new features and changes all the time; it's even hard for us to keep track! ☺️