在shinyDashboard中切换menuSubItems

Question

我正在尝试使用shinydashboard设置一个闪亮的应用程序,并且在大多数情况下,祝你好运.但是,我正在遇到一个我认为可以避免的侧边栏行为的怪癖,但还没有找到.

下面是一个小例子,它重现了我遇到的问题.基本上,有两个sidebarMenus - Menu One和Menu Two,每个都有两个menuSubItems.在菜单项中切换子项可以正常工作.所以,如果我想从subItemOne切换到subItemTwo,没有问题.我可以整天这样做.

我也可以跨菜单切换到subItems,这样从subItemOne跳转到subItemThree,这很好.问题在于试图切换回来.如果选择了subItemOne,我尝试转到subItemThree并返回 subItemOne,我无法做到.我必须去subItemTwo,然后我可以打开SubItemOne.

有没有办法纠正这个设置,以便我可以直接从subItemOne跳转到subItemThree(或两个和四个),然后再回来？

library('shiny')
library('shinydashboard')
# Sidebar #############################
sidebar <- dashboardSidebar(
  width = 290,

  sidebarMenu(
    menuItem('Menu One', tabName = 'menuOne', icon = icon('line-chart'), 
        collapsible = 
            menuSubItem('Sub-Item One', tabName = 'subItemOne'),
            menuSubItem('Sub-Item Two', tabName = 'subItemTwo')
            )
  ),

  sidebarMenu(
    menuItem('Menu Two', tabName = 'menuTwo', icon = icon('users'), 
             collapsible = 
               menuSubItem('Sub-Item Three', tabName = 'subItemThree'),
             menuSubItem('Sub-Item Four', tabName = 'subItemFour')
    )
  )

)
# Body #############################
body <- dashboardBody(

  tabItems(
    tabItem(tabName = 'subItemOne',
            h2('Selected Sub-Item One')
    ),
    tabItem(tabName = 'subItemTwo',
            h2('Selected Sub-Item Two')
    ),
    tabItem(tabName = 'subItemThree',
            h2('Selected Sub-Item Three')
    ),
    tabItem(tabName = 'subItemFour',
            h2('Selected Sub-Item Four')
    )
  )
)
# UI #############################
ui <- dashboardPage(
  dashboardHeader(title = 'Test', titleWidth = 290),
  sidebar,
  body
)
# Server #############################
server <- function(input, output){

}

shinyApp(ui, server)

Answer 1

问题是选项卡项保持活动状态,单击活动选项卡项不会更新UI.这可以通过一些Javascript来修复.

library('shiny')
library('shinydashboard')
# Sidebar #############################
sidebar <- dashboardSidebar(
  tags$head(
    tags$script(
      HTML(
        "
        $(document).ready(function(){
          // Bind classes to menu items, easiet to fill in manually
          var ids = ['subItemOne','subItemTwo','subItemThree','subItemFour'];
          for(i=0; i<ids.length; i++){
            $('a[data-value='+ids[i]+']').addClass('my_subitem_class');
          }

          // Register click handeler
          $('.my_subitem_class').on('click',function(){
            // Unactive menuSubItems
            $('.my_subitem_class').parent().removeClass('active');
          })
        })
        "
      )
    )
  ),
  width = 290,

  sidebarMenu(
    menuItem('Menu One', tabName = 'menuOne', icon = icon('line-chart'),
             collapsible = 
               menuSubItem('Sub-Item One', tabName = 'subItemOne'),
             menuSubItem('Sub-Item Two', tabName = 'subItemTwo')
    )
  ),

  sidebarMenu(
    menuItem('Menu Two', tabName = 'menuTwo', icon = icon('users'), 
             collapsible = 
               menuSubItem('Sub-Item Three', tabName = 'subItemThree'),
             menuSubItem('Sub-Item Four', tabName = 'subItemFour')
    )
  )

)
# Body #############################
body <- dashboardBody(

  tabItems(
    tabItem(tabName = 'subItemOne',
            h2('Selected Sub-Item One')
    ),
    tabItem(tabName = 'subItemTwo',
            h2('Selected Sub-Item Two')
    ),
    tabItem(tabName = 'subItemThree',
            h2('Selected Sub-Item Three')
    ),
    tabItem(tabName = 'subItemFour',
            h2('Selected Sub-Item Four')
    )
  )
)
# UI #############################
ui <- dashboardPage(
  dashboardHeader(title = 'Test', titleWidth = 290),
  sidebar,
  body
)
# Server #############################
server <- function(input, output){

}

shinyApp(ui, server)