你可以创建一个假人
tabItem
这就是
hidden
并选择bu默认值。这会给人一种错觉
选项卡项
已选中。隐藏
选项卡项
您可以使用的选项
隐藏的
功能来自
shinyjs
包裹
以下是修改后的
ui
代码:
ui <- dashboardPage(
dashboardHeader(),
dashboardSidebar(
sidebarMenu(
shinyjs::useShinyjs(),
id = "tabs",
menuItem("Charts", icon = icon("bar-chart-o"),
shinyjs::hidden(menuSubItem("dummy", tabName = "dummy")),
menuSubItem("Sub-item 1", tabName = "subitem1"),
menuSubItem("Sub-item 2", tabName = "subitem2"),
menuSubItem("Sub-item 3", tabName = "subitem3")
))),
dashboardBody(
tabItems(tabItem("dummy"),
tabItem("subitem1", uiOutput("brand_selector")),
tabItem("subitem2", 4),
tabItem("subitem3", 7))
))
编辑1:
根据bu Joe给出的答案中的评论和参考
here
您可以按以下方式进行操作:
candyData <- read.table(
text = "
Brand Candy value
Nestle 100Grand Choc1
Netle Butterfinger Choc2
Nestle Crunch Choc2
Hershey's KitKat Choc4
Hershey's Reeses Choc3
Hershey's Mounds Choc2
Mars Snickers Choc5
Nestle 100Grand Choc3
Nestle Crunch Choc4
Hershey's KitKat Choc5
Hershey's Reeses Choc2
Hershey's Mounds Choc1
Mars Twix Choc3
Mars Vaid Choc2",
header = TRUE,
stringsAsFactors = FALSE)
library(shiny)
library(shinydashboard)
ui <- dashboardPage(
dashboardHeader(),
dashboardSidebar(
sidebarMenu(
shinyjs::useShinyjs(),
id = "tabs",
menuItem("Charts", icon = icon("bar-chart-o"),
shinyjs::hidden(menuSubItem("dummy", tabName = "dummy")),
menuSubItem("Sub-item 1", tabName = "subitem1"),
menuSubItem("Sub-item 2", tabName = "subitem2"),
menuSubItem("Sub-item 3", tabName = "subitem3")
))),
dashboardBody(
tabItems(tabItem("dummy"),
tabItem("subitem1", uiOutput("brand_selector")),
tabItem("subitem2", uiOutput("brand_selector1")),
tabItem("subitem3", uiOutput("brand_selector2")))
))
server <- function(input, output,session) {
observeEvent(input$Select1,{
updateSelectInput(session,'Select2',
choices=unique(candyData$Candy[candyData$Brand==input$Select1]))
})
observeEvent(input$Select2,{
updateSelectInput(session,'Select3',
choices=unique(candyData$value[candyData$Brand==input$Select1 &
candyData$Candy==input$Select2]))
})
output$brand_selector1 <- output$brand_selector2 <- output$brand_selector <- renderUI({
box(title = "Data", status = "primary", solidHeader = T, width = 12,
fluidPage(
fluidRow(
column(2,offset = 0, style='padding:1px;',
selectInput("Select1","select1",unique(candyData$Brand))),
column(2,offset = 0,
style='padding:1px;',selectInput("Select2","select2",choices = NULL)),
column(2, offset = 0,
style='padding:1px;',selectInput("Select3","select3",choices=NULL ))
)))
})}
shinyApp(ui = ui, server = server)
编辑2:
这里有一种稍微不同的方法,不使用
renderUI
和使用
shinyModule
:
candyData <- read.table(
text = "
Brand Candy value
Nestle 100Grand Choc1
Netle Butterfinger Choc2
Nestle Crunch Choc2
Hershey's KitKat Choc4
Hershey's Reeses Choc3
Hershey's Mounds Choc2
Mars Snickers Choc5
Nestle 100Grand Choc3
Nestle Crunch Choc4
Hershey's KitKat Choc5
Hershey's Reeses Choc2
Hershey's Mounds Choc1
Mars Twix Choc3
Mars Vaid Choc2",
header = TRUE,
stringsAsFactors = FALSE)
library(shiny)
library(shinydashboard)
submenuUI <- function(id) {
ns <- NS(id)
tagList(
box(title = "Data", status = "primary", solidHeader = T, width = 12,
fluidPage(
fluidRow(
column(2,offset = 0, style='padding:1px;',
selectInput(ns("Select1"),"select1",unique(candyData$Brand))),
column(2,offset = 0,
style='padding:1px;',selectInput(ns("Select2"),"select2",choices = NULL)),
column(2, offset = 0,
style='padding:1px;',selectInput(ns("Select3"),"select3",choices=NULL ))
)))
)
}
# submenu <- function(input,output,session){}
submenuServ <- function(input, output, session){
observeEvent(input$Select1,{
updateSelectInput(session,'Select2',
choices=unique(candyData$Candy[candyData$Brand==input$Select1]))
})
observeEvent(input$Select2,{
updateSelectInput(session,'Select3',
choices=unique(candyData$value[candyData$Brand==input$Select1 &
candyData$Candy==input$Select2]))
})
}
ui <- dashboardPage(
dashboardHeader(),
dashboardSidebar(
sidebarMenu(
shinyjs::useShinyjs(),
id = "tabs",
menuItem("Charts", icon = icon("bar-chart-o"),
shinyjs::hidden(menuSubItem("dummy", tabName = "dummy")),
menuSubItem("Sub-item 1", tabName = "subitem1"),
menuSubItem("Sub-item 2", tabName = "subitem2"),
menuSubItem("Sub-item 3", tabName = "subitem3")
))),
dashboardBody(
tabItems(tabItem("dummy"),
tabItem("subitem1", submenuUI('submenu1')),
tabItem("subitem2", submenuUI('submenu2')),
tabItem("subitem3", submenuUI('submenu3'))
)
))
server <- function(input, output,session) {
callModule(submenuServ,"submenu1")
callModule(submenuServ,"submenu2")
callModule(submenuServ,"submenu3")
}
shinyApp(ui = ui, server = server)
希望有帮助!