是否可以在禁用和启用 DT table 之间切换？

Question

我有一个应用程序，它的 DT table 启用了行 selection。是否可以在不重新渲染的情况下在禁用和启用整个 table 之间切换？使用 shinyjs::disable 和 shinyjs::enable 将禁用和启用 table 中用于过滤的文本框，但不会 select 行。我也不知道有任何 DT 代理方法可以完成我正在尝试做的事情。

library(shiny)
library(DT)
library(shinyjs)

ui <- fluidPage(
  DTOutput("table"),
  actionButton(inputId = "disable",
               label = "Disable"),
  actionButton(inputId = "enable",
               label = "Enable"),
  useShinyjs()
)

server <- function(input, output, session) {

  output$table <- renderDT({
    data <- data.frame(COL_1 = c(1, 2, 3, 4),
                       COL_2 = c("A", "B", "C", "D"),
                       stringsAsFactors = FALSE)
    datatable(data,
              escape = FALSE,
              filter = list(position = "top"),
              rownames = FALSE)
  })


  observeEvent(input$disable, {
    disable(id = "table")
  })

  observeEvent(input$enable, {
    enable(id = "table")
  })

}

shinyApp(ui = ui, server = server)

Answer 1

似乎没有 proxy method 符合您的需求，因此您必须重新渲染 table。

但是，您不需要 library(shinyjs)。

请检查以下内容：

library(shiny)
library(DT)

ui <- fluidPage(
  DTOutput("table"),
  actionButton(inputId = "disable",
               label = "Disable"),
  actionButton(inputId = "enable",
               label = "Enable")
)

server <- function(input, output, session) {

  dtSettings <- reactiveValues(searchable = TRUE, mode = "multiple")

  output$table <- renderDT({
    data <- data.frame(COL_1 = c(1, 2, 3, 4),
                       COL_2 = c("A", "B", "C", "D"),
                       stringsAsFactors = FALSE)
    datatable(data,
              escape = FALSE,
              filter = list(position = "top"),
              rownames = FALSE,
              selection = list(mode = dtSettings$mode , selected = NULL, target = 'row'),
              options = list(
                columnDefs = list(list(targets = seq_len(ncol(data))-1, searchable = dtSettings$searchable)),
                pageLength = 5
              ))
  }, server = FALSE)

  observeEvent(input$disable, {
    dtSettings$searchable <- FALSE
    dtSettings$mode <- "none"
  })

  observeEvent(input$enable, {
    dtSettings$searchable <- TRUE
    dtSettings$mode <- "multiple"
  })
}

shinyApp(ui = ui, server = server)

Answer 2

我发现我可以通过在数据表的 tbody 元素中使用 event.stopPropagation() 来完成此操作。

library(shiny)
library(DT)
library(shinyjs)

ui <- fluidPage(
  DTOutput("table"),
  actionButton(inputId = "disable",
               label = "Disable"),
  actionButton(inputId = "enable",
               label = "Enable"),
  useShinyjs()
)

server <- function(input, output, session) {

  output$table <- renderDT({
    data <- data.frame(COL_1 = c(1, 2, 3, 4),
                       COL_2 = c("A", "B", "C", "D"),
                       stringsAsFactors = FALSE)
    datatable(data,
              escape = FALSE,
              filter = list(position = "top"),
              rownames = FALSE)
  })


  observeEvent(input$disable, {
    runjs("document.getElementById('table').getElementsByTagName('tbody')[0].setAttribute('onmousedown', 'event.stopPropagation();');")
  })

  observeEvent(input$enable, {
    runjs("document.getElementById('table').getElementsByTagName('tbody')[0].removeAttribute('onmousedown');")
  })

}

shinyApp(ui = ui, server = server)

是否可以在禁用和启用 DT table 之间切换？

Is it possible to toggle between disabling and enabling a DT table?

r

shiny

dt

shinyjs