清除主面板以在闪亮的 r studio 中显示其他反应输出

Question

I have a dataTableOutput in my main panel. Then I have an action button "Go". Once I click "Go" I want rHandsOutput to appear in the main panel but not beneath dataTableOutput. How can I remove dataTableOutput in the main panel and display rHandsOutput. In my current code both tables appearing together. Once I click "Go", the second table comes under the first table where I want to appear only second table (rHandsOutput) removing 1st table from the main panel.

Please help me!1

Answer 1

You can use a combination of insertUI and removeUI to make UI components dynamic. For example:

library(shiny)

ui <- fluidPage(


sidebarLayout(
  
  sidebarPanel(
    
    actionButton(inputId = "go", label = "Go")
    
  ),
  
mainPanel(
  
  fluidRow(
    tags$div(id = "firstOutput", 
           dataTableOutput("myDataTable"))
    ),
  
  fluidRow(
    tags$div(id = "placeholder") # the dynamic UI will be inserted relative to this placeholder
    )
))

)


server <- function(input, output) {
  
  output$myDataTable <- renderDataTable(iris)
    
  observeEvent(input$go, {
    
    removeUI("div:has(>#firstOutput)")
    
    insertUI(
      selector = "#placeholder",
      where = "afterEnd", # inserts UI after the end of the placeholder element
      ui = fluidRow(
        actionButton(inputId = "newButton", label = "A new button")))
    
    })
  
}

shinyApp(ui = ui, server = server)

Answer 2

You can use showElement() and hideElement() from shinyjs :

observeEvent(input$go, {
  shinyjs::hideElement(“firsttable”)
  shinyjs::showElement(“rHandsOutput”)
})

Assuming the ID of the first table is “firsttable” and the ID of the second table is “rHandsOutput”, and the ID of the “Go” button is “go”.

Answer 3

Generate the ui dynamically.

Use uiOutput("someidentifier") in the ui.r and then fill it with your datatable with the following in server.r

output$someidentifier <- 
  renderUI({
    dataTableOutput("datatableidentifier")
  })

output$datatableidentifier <- renderDataTable(iris)

uiOutput takes the place (in ui.r ) of whatever ui element you want to add dynamically. The necessary code for that ui then moves to renderUI in server.r .