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filter column with 2 levels #384

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guillaumechaumet opened this issue Jul 23, 2024 · 4 comments
Closed

filter column with 2 levels #384

guillaumechaumet opened this issue Jul 23, 2024 · 4 comments
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doc Documentation issue or suggestion

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@guillaumechaumet
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guillaumechaumet commented Jul 23, 2024

I use the following code to filter 4 columns:

pathogenicity_label = colDef(
  na = "Not Classified",
  filterInput = function(values, name) {
  tags$select(
    onchange = sprintf("Reactable.setFilter('genomtab', '%s', event.target.value || undefined)", name),
    tags$option(value = "", "All"),
    purrr::map(sort(unique(values)), tags$option),
    "aria-label" = sprintf("Filter %s", name),
    style = "width: 100%; height: 28px;"
     )
  }
)

It work for every columns but not for 1 column which only have 2 levels. When I choose the first level, It has the same result as "All".

Is it a known bug ?

Edit:

Here, a simple code with this bug


library(reactable)
library(htmltools)
mytable = data.frame(group = c(rep('HP',26),rep('NHP',26)),var1 = rep(LETTERS,2), rnorm(52,mean = 30,sd = 10))


htmltools::browsable(
  tagList(
    reactable(mytable,
      searchable = TRUE,
      highlight = TRUE,
      bordered = TRUE,
      rowStyle = list(cursor = "pointer"),
      defaultPageSize = 5,
      striped = TRUE,
      wrap = FALSE,
      filterable = TRUE,
      columns = list(
        group = colDef(
          filterInput = function(values, name) {
            tags$select(
            onchange = sprintf("Reactable.setFilter('mytab', '%s', event.target.value || undefined)", name),
            tags$option(value = "", "All"),
            lapply(sort(unique(values)), tags$option),
            "aria-label" = sprintf("Filter %s", name),
            style = "width: 100%; height: 28px;"
          )
        }
      )
      ),
      elementId = "mytab"
    )
  )
)

@radovan-miletic
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radovan-miletic commented Jul 26, 2024

According to ChatGPT we should apply custom filter method to ensure that the filtering is based on exact matches (only rows with exact matches to the filter value are returned), which should resolve the issue with overlapping substrings like 'HP' and 'NHP' or 'AB' and 'CAB'.

filterMethod = JS("function(rows, columnId, filterValue) {
                    return rows.filter(function(row) {
                      if (filterValue === '') {
                        return true;
                      }
                      return row.values[columnId] === filterValue;
                    });
                  }")

It seems to work well but Greg's opinion or someone's from {reactable} community experienced in JS is needed !

library(reactable)
library(htmltools)

mytable <- data.frame(group = c(rep('AB', 26), rep('CAB', 26)), var1 = rep(LETTERS, 2), rnorm(52, mean = 30, sd = 10))

htmltools::browsable(
  tagList(
    reactable(mytable,
              searchable = TRUE,
              highlight = TRUE,
              bordered = TRUE,
              rowStyle = list(cursor = "pointer"),
              defaultPageSize = 5,
              striped = TRUE,
              wrap = FALSE,
              filterable = TRUE,
              columns = list(
                group = colDef(
                  filterInput = function(values, name) {
                    tags$select(
                      id = sprintf("filter-%s", name),
                      onchange = sprintf("Reactable.setFilter('mytab', '%s', event.target.value || undefined)", name),
                      tags$option(value = "", "All"),
                      lapply(sort(unique(values)), function(value) {
                        tags$option(value = value, value)
                      }),
                      "aria-label" = sprintf("Filter %s", name),
                      style = "width: 100%; height: 28px;"
                    )
                  },
                  filterMethod = JS("function(rows, columnId, filterValue) {
                    return rows.filter(function(row) {
                      if (filterValue === '') {
                        return true;
                      }
                      return row.values[columnId] === filterValue;
                    });
                  }")
                )
              ),
              elementId = "mytab"
    )
  )
)

@guillaumechaumet
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guillaumechaumet commented Jul 26, 2024 via email

@glin
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glin commented Aug 5, 2024

@radovan-miletic Thanks for answering. Yep, the default filter method is a case-insensitive string match like grep(..., ignore.case = TRUE), so you'll need that custom filter method for exact matches. I just noticed we're missing an example for exact match filtering at https://glin.github.io/reactable/articles/custom-filtering.html#examples, so I'll get that added at some point.

@glin glin added the doc Documentation issue or suggestion label Aug 5, 2024
@glin
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glin commented Sep 9, 2024

Added an example in 2b69b49

@glin glin closed this as completed Sep 9, 2024
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