使用shiny的DT包中的select扩展中的select all按钮，只选择过滤的行。

Question

我试图使用shiny的DT包中自带的select extension的select all按钮只选择过滤的行，但它选择了所有的行。以下是shiny的示例 应用

以下是该应用的可复制代码。

library(DT)
data(mpg)
# Define UI for application 
ui <- fluidPage(

    # Application title
    titlePanel("Select only filtered rows using selectall button"),

    br(),
    br(),

    DT::dataTableOutput("table")


)

# Define server logic 
server <- function(input, output) {

    output$table <- DT::renderDataTable({
        datatable(mpg, escape=F,
                  rownames=F,
                  filter = 'top',
                  #  colnames = c("Data Type","Variable","Description", "Filename"),
                  class = "compact hover row-border",
                  extensions = c('Scroller','Select', 'Buttons'),

                  options = list(
                      select = list(style = "multi", items = "row"),
                      columnDefs = list(list(className = 'dt-center', targets = "_all")),
                      language = list(
                          info = 'Showing _START_ to _END_ of _TOTAL_ variables'),
                      deferRender = TRUE,
                      scrollY = 500,
                      scroller = TRUE,
                      dom = "Blfrtip",
                      buttons = c('selectAll', 'selectNone')
                  ),
                  selection="none"
        ) }, server = F
    )
}

# Run the application 
shinyApp(ui = ui, server = server)

我想我可能需要添加一些自定义的javascript来解决这个问题，但我不擅长这个问题.谁能帮忙或给点建议。

谢谢你的帮助

Answer 1

不知怎的，我想出了我的问题的解决方法。把它贴在这里，所以它可能会帮助其他人。我从几个地方得到了帮助。数据化文档 和 叠叠乐

利用这些帮助，我扩展了我的selectall按钮功能，同时也扩展了deselectall按钮（取消选择任何过滤行）。

下面是更新后的闪亮的 应用

下面是更新后的代码。

library(shiny)
library(DT)
data(mpg)
# Define UI for application that draws a histogram
ui <- fluidPage(

    # Application title
    titlePanel("Select only filtered rows using selectall button"),

    br(),
    br(),

    DT::dataTableOutput("table")



)

# Define server logic required to draw a histogram
server <- function(input, output) {

    output$table <- DT::renderDataTable({
        datatable(mpg, escape=F,
                  rownames=F,
                  filter = 'top',
                  #  colnames = c("Data Type","Variable","Description", "Filename"),
                  class = "compact hover row-border",
                  extensions = c('Scroller','Select', 'Buttons'),

                  options = list(
                      select = list(style = "multi", items = "row"),
                      columnDefs = list(list(className = 'dt-center', targets = "_all")),
                      language = list(
                          info = 'Showing _START_ to _END_ of _TOTAL_ variables'),
                      deferRender = TRUE,
                      scrollY = 500,
                      scroller = TRUE,
                      dom = "Blfrtip",
                      buttons = list(list(extend='selectAll',className='selectAll',
                                text="select all rows",
                                action=DT::JS("function () {
                                var table = $('#DataTables_Table_0').DataTable();
                                table.rows({ search: 'applied'}).deselect();
                                table.rows({ search: 'applied'}).select();
                }")
                                ), list(extend='selectNone',
                                        text="DeselectAll",
                                        action=DT::JS("function () {
                                var table = $('#DataTables_Table_0').DataTable();
                                table.rows({ search: 'applied'}).select();
                                table.rows({ search: 'applied'}).deselect();
                }")
                                ))

                  ),
                  selection="none"
        ) }, server = F
    )
}

# Run the application 
shinyApp(ui = ui, server = server)

希望对大家有所帮助