Dashboard variables: A 1:Many list dependent on previous variable

[gelicia]

Why is this needed:

There are many cases where a user may want to have a second variable list populate off a previous selected value. This relationship may be static and not represented in a database, so providing an option where this relationship can be entered manually would provide a good use case.

For example, there may be systems that are only relevant to dev or staging or prod. The user would first select the environment, and a second list of systems would show up, dependent on the environment.

What would you like to be added:

A way to type a static 1 to many relationship based on the value of a previous variable.

There should be a list of previous variables to select from, and form where one enters a value, then a comma separated list of values that should be in the dropdown when that value is selected.

Who is this feature for?

For users with a simple one to many mapping that is not available via query variables.