summary_rows() for one group in multi-group table

[steveputman]

When a table has multiple grouping variables (and therefore the groupnames show up as Group 1 - Subgroup 1), is it possible to generate summary_rows for the group higher in the hierarchy (Group 1 in this example)?

I have tried calling out only the "higher" group in addition to the subgrouping you get with groups = TRUE but get an error.

library(tidyverse)
library(gt)

exibble %>%
  mutate(subgroup = c(1,1,2,2,1,1,2,2)) %>%
  gt(groupname_col = c("group", "subgroup"),
     rowname_col = "row") %>%
  summary_rows(groups = TRUE,
               columns = vars(num),
               fns = list(Total = ~sum(., na.rm = TRUE))) %>%
  summary_rows(groups = "group",
               columns = vars(num),
               fns = list(Total = ~sum(., na.rm = TRUE)))
#> Error: All `groups` should be available in the gt object:
#>  * The following groups aren't present: group

^{Created on 2020-04-14 by the reprex package (v0.3.0)}

Thanks and congrats on getting it onto CRAN!

Steve