Feature Request: replaceData

[uriahf]

Hi, first of all a great package! Thank you for your time and effort!

Is it possible to make a function like replaceData in DT?
https://rdrr.io/cran/DT/man/replaceData.html

I'd like to update my table without regenerating it every time I change the inputs.

[glin]

Hi,

Yup this is possible, and something I started working on a while back. It'll be added through something like updateReactable(data = newData), most likely for the next release. Thanks for the feature request!

[uriahf]

It sounds great!
Honestly, that's the only reason why I don't use reactable in most cases yet. By the way, the update for crosstalk is extremely important for me!

Ideally, I would like to make a proxy table with other nested proxy tables inside. Unfortunately it doesn't seem possible with DT, maybe it will be possible with reactable in the future?

[glin]

Added a data argument to update data via updateReactable(): https://glin.github.io/reactable/reference/updateReactable.html. When updating data, the selection, expansion, and current page state will reset by default, but all other state (e.g. sorting, filtering) should persist.

The updateReactable() example app uses this to implement custom data filtering: https://glin.github.io/reactable/articles/examples.html#update-a-reactable-instance

And here's another toy app that simulates real-time data updates: https://github.com/glin/reactable/blob/master/inst/examples/shiny-data-streaming.R

[glin]

Nested proxy tables should already be supported, but it's definitely not well tested. You may stumble upon some bugs :). To use updateReactable() with a nested table, you'll have to render the nested table as a Shiny output, like:

reactable(
  details = function(index) {
    reactableOutput("nested_table")
  }
)

Here's an example app that uses updateReactable() with a nested table.

library(shiny)
library(reactable)

data <- MASS::Cars93[, 1:7]

ui <- fluidPage(
  selectInput("filter_type", "Filter type", unique(data$Type), multiple = TRUE),
  reactableOutput("table")
)

server <- function(input, output) {
  output$table <- renderReactable({
    reactable(
      data,
      defaultExpanded = TRUE,
      details = function(index) {
        if (index == 2) {
          reactableOutput("nested_table")
        }
      }
    )
  })
  
  output$nested_table <- renderReactable({
    reactable(data, selection = "multiple", bordered = TRUE)
  })
  
  observeEvent(input$filter_type, {
    if (length(input$filter_type) > 0) {
      filtered <- data[data$Type %in% input$filter_type, ]
    } else {
      filtered <- data
    }
    updateReactable("nested_table", data = filtered)
  }, ignoreNULL = FALSE)
}

shinyApp(ui, server)

[uriahf]

This is awesome!
Thank you so much!

[lemuelemos]

Added a data argument to update data via updateReactable(): https://glin.github.io/reactable/reference/updateReactable.html. When updating data, the selection, expansion, and current page state will reset by default, but all other state (e.g. sorting, filtering) should persist.

The updateReactable() example app uses this to implement custom data filtering: https://glin.github.io/reactable/articles/examples.html#update-a-reactable-instance

And here's another toy app that simulates real-time data updates: https://github.com/glin/reactable/blob/master/inst/examples/shiny-data-streaming.R

It's possible to update and not reset expansion?