Construct JavaScript method to capture Shiny inputs on change.

This captures the state of a sortable list. It will look for a data-rank-id attribute of the first child for each element. If no? attribute exists for that particular item's first child, the inner text will be used as an identifier.

Usage

sortable_js_capture_input(input_id)

sortable_js_capture_bucket_input(input_id, input_ids, css_ids)

Arguments

input_id

Shiny input name to set

input_ids

Set of Shiny input ids to set corresponding to the provided css_ids

css_ids

Set of SortableJS css_id values to help retrieve all to set as an object

Value

A character vector with class JS_EVAL. See htmlwidgets::JS().

Details

This method is used with the onSort option of sortable_js. See sortable_options().

See also

sortable_js and rank_list.

Other JavaScript functions: chain_js_events()

Examples

## -- example-sortable-js-capture -----------------------------------------
# Simple example of sortable_js_capture.
# Important: set the tags CSS `id` equal to the sortable_js `css_id`

if(interactive()) {
  library(shiny)
  library(sortable)

  ui <- fluidPage(
    div(
      id = "sortable",
      div(id = 1, `data-rank-id` = "HELLO", class = "well", "Hello"),
      div(id = 2, `data-rank-id` = "WORLD", class = "well", "world")
    ),
    verbatimTextOutput("chosen"),
    sortable_js(
      css_id = "sortable",
      options = sortable_options(
        onSort = sortable_js_capture_input(input_id = "selected")
      )
    )
  )

  server <- function(input, output){
    output$chosen <- renderPrint(input$selected)
  }

  shinyApp(ui, server)
}



## ------------------------------------
# For an example, see the Shiny app at
system.file("shiny/drag_vars_to_plot/app.R", package = "sortable")
#> [1] "/home/runner/work/_temp/Library/sortable/shiny/drag_vars_to_plot/app.R"