Custom date formats for a visualization

[alexfrancoeur]

Some users would like to customize the format of a date in a date histogram per visualization. This could technically be done with a scripted field and field formatters but that is not necessarily manageable. This issue to track additional date formatting customization options in a visualization, TSVB and Timelion

cc: @elastic/kibana-visualizations, @simianhacker

[tsullivan]

Let's revive this issue because I think there may be a more straightforward solution to customize date formats per visualization.

When I create a data table visualization using a date_histogram as the top-level agg, I am able to enter JSON that gets merged with with the definition of the date histogram DSL:

Elasticsearch performs as expected and formats the resulting bucket date-strings with my format:

The solution seems like it should be for the rendering to allow display of either key or key_as_string, depending on whether there was customization from the user.

[jvmlet]

Very anticipated ....

[lukeelmers]

This feels like a duplicate of #4957 -- @alexfrancoeur I'll let you confirm before closing.

[alexfrancoeur]

Confirmed 😎

[vikramnr]

@alexfrancoeur Just wanted to confirm if this has gone live in the latest version?