Question

我有一个我使用ShinydashboardPlus和Shinydashboard制作的闪亮应用程序，当用户单击带有情节的menuItem时，我想自动打开rightSidebar。

两个小时以来，我一直在努力寻找答案，但没有发现任何问题。我不确定这是否可行，但我想我想问一下是否有人对此有任何见识（如果可能）。

示例应用程序：

library(shiny)
library(shinydashboard)
library(shinydashboardPlus)

header<-dashboardHeaderPlus(enable_rightsidebar = TRUE,
rightSidebarIcon = "bars")

sidebar<- dashboardSidebar(
sidebarMenu(
menuItem("Data",
tabName = "data"),
menuItem("Plots",
tabName = "plots",
icon = icon("bar-chart-o"))))

body<-dashboardBody(
tabItems(
tabItem(tabName = "data","DATA"),
tabItem(tabName = "plots",
box(plotOutput("plot1")))))

rightsidebar<-rightSidebar(
background = "dark",
rightSidebarTabContent(
id=1,
title = "Customize Plots",
icon = "desktop",
active = T,
sliderInput("slider", "Number of observations:", 1, 100, 50)))

ui<- dashboardPagePlus(header = header,
sidebar = sidebar,
body = body,
rightsidebar = rightsidebar,

)

server<- function(input,output,session){
set.seed(122)
histdata <- rnorm(500)

output$plot1<- renderPlot({
data <- histdata[seq_len(input$slider)]
hist(data)
})

}
shinyApp(ui, server)

Answer 1

看一下HTML，您可以看到打开时，css类“ control-sidebar-open”已添加到右侧边栏中。

每当在左侧栏中选择了plots菜单项时，就可以使用Shinyjs包在Shiny中进行编程，以添加此类。首先，您需要为左侧栏添加id，以便Shiny然后知道选择了哪个选项卡，然后每当选中/取消选择“绘图”选项卡时，就使用Shinyjs添加/删除该类。

下面的工作代码。

library(shiny)
library(shinydashboard)
library(shinydashboardPlus)
library(shinyjs)

header<-dashboardHeaderPlus(enable_rightsidebar = TRUE,
                            rightSidebarIcon = "bars")

sidebar<- dashboardSidebar(
  sidebarMenu(id = "left_sidebar",
    menuItem("Data",
             tabName = "data"),
    menuItem("Plots",
             tabName = "plots",
             icon = icon("bar-chart-o"))))

body<-dashboardBody(
  tabItems(
    tabItem(tabName = "data","DATA"),
    tabItem(tabName = "plots",
            box(plotOutput("plot1")))))

rightsidebar<-rightSidebar(
  background = "dark",
  rightSidebarTabContent(
    id=1,
    title = "Customize Plots",
    icon = "desktop",
    active = T,
    sliderInput("slider", "Number of observations:", 1, 100, 50)))

ui<- dashboardPagePlus(
  shinyjs::useShinyjs(),
  header = header,
  sidebar = sidebar,
  body = body,
  rightsidebar = rightsidebar,

)

server <- function(input,output,session){
  set.seed(122)
  histdata <- rnorm(500)

  observe({
    if (input$left_sidebar == "plots") {
      shinyjs::addClass(selector = "aside.control-sidebar", class = "control-sidebar-open")
    } else {
      shinyjs::removeClass(selector = "aside.control-sidebar", class = "control-sidebar-open")
    }
  })

  output$plot1<- renderPlot({
    data <- histdata[seq_len(input$slider)]
    hist(data)
  })

}
shinyApp(ui, server)

在ShinydashboardPlus中单击menuItem时，会自动弹出rightSidebar

1 个答案: