使用DOM选项定位DataTables元素

Posted 2021-05-03

我无法使用l选项在f的DT::datatable输出上分别正确地将shinyength更改和domiltering输入定位到右上角和左下角。码：

library(shiny)
library(DT)

set.seed(2282018)
company <- data.frame(Company = letters[1:10], Sales = scales::dollar(runif(10, 200, 1230)), stringsAsFactors = F)

# UI ---- 
ui <- function(){

  fluidPage(

    sidebarLayout(

      sidebarPanel(numericInput("nums", label = "Num Input", value = 1, min = 1, max = 10)),

      mainPanel(dataTableOutput("mytable"))

      )

  )

}

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

  output$mytable <- renderDataTable({
    datatable(company, 
              caption = tags$caption("StackOverflow Example"), 
              filter = "none", 
              options = list(
                autoWidth = T, 
                pageLength = 10, 
                scrollCollapse = T, 
                dom = '<"right"l>t<"left"f>')
              )

  })

}

runApp(list(ui = ui, server = server))

如前所述，我的目标是将l移至右上方，将f移至左下角。

谢谢！

答案

处理

在DataTable DOM positioning reference中，有移动元素到顶部/底部但不是左/右的示例。我不确定是否可以使用dom选项左/右移动元素。

但是，根据这个question about moving the search box，您可以分三步向左/向右移动元素：

1. 制作CSS课程 css <- html(".pull-left{float: left !important;} .pull-right{float: right !important;}")
2. 使用javascript / jQuery将类添加到数据表中 js <- HTML("$(function(){ setTimeout(function(){ $('.dataTables_filter').addClass('pull-left'); $('.dataTables_length').addClass('pull-right'); }, 200); });")
3. 将CSS和JS添加到闪亮应用程序的HTML标头中 fluidPage( tags$head(tags$style(css), tags$script(js)), ...)

---

完整的例子

library(shiny)
library(DT)

set.seed(2282018)
company <- data.frame(Company = letters[1:10], Sales = scales::dollar(runif(10, 200, 1230)), stringsAsFactors = F)

css <- HTML(".pull-left{float: left !important;}
            .pull-right{float: right !important;}")

js <- HTML("$(function(){
        setTimeout(function(){
           $('.dataTables_filter').addClass('pull-left');
           $('.dataTables_length').addClass('pull-right');
           }, 200);
           });")

# UI ---- 
ui <- function(){

        fluidPage(
                tags$head(tags$style(css),
                          tags$script(js)),

                sidebarLayout(

                        sidebarPanel(numericInput("nums", label = "Num Input", value = 1, min = 1, max = 10)),

                        mainPanel(dataTableOutput("mytable"))
                )       
        )
}

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

        output$mytable <- renderDataTable({
                datatable(company, 
                          caption = tags$caption("StackOverflow Example"), 
                          filter = "none", 
                          options = list(
                                  autoWidth = T, 
                                  pageLength = 10, 
                                  scrollCollapse = T, 
                                  dom = '<"top"l>t<"bottom"f>')
                )
        })
}
runApp(list(ui = ui, server = server))