用于延迟ID的shinyjs - setBookmarkExclude

Question

我试图将ShinyJS延迟排除在反应性书签上下文中。我看到URL中的延迟ID是自动生成的，并且总是不同的: delay-ad190e10123bd97f960fed7a8a9e6fde=3000。

我试图通过正则表达式排除延迟，但我不认为正则表达式正在被解析：

setBookmarkExclude(
    c("delay-[[:alnum:]]"))

我想要一种方法来设置延迟的ID，这样每次都是相同的，或者对setBookmarkExclude进行正则化以排除随机生成的延迟ID。

Answer 1

请参阅以下示例：

library(shiny)
library(shinyjs)

ui <- function(request) {
    fluidPage(
        useShinyjs(),
        br(),
        bookmarkButton(id="bookmarkBtn"),
        hr(),
        textOutput("ExcludedIDsOut"),
        hr(),
        sliderInput(inputId="slider", label="My value will be bookmarked", min=0, max=10, value=5),
        textOutput("out_1"),
        textOutput("out_2"),
        textOutput("out_3")
    )
}

server <- function(input, output, session) {
    
    observeEvent(input$bookmarkBtn, {
        session$doBookmark()
    })
    
    ExcludedIDs <- reactiveVal(value = NULL)
    
    observe({
        toExclude <- "bookmarkBtn"
        
        delayExclude <- grep("delay", names(input), value = TRUE)
        if(length(delayExclude) > 0){
            toExclude <- c(toExclude, delayExclude)
        }
        
        setBookmarkExclude(toExclude)
        ExcludedIDs(toExclude)
    })
    
    output$ExcludedIDsOut <- renderText({ 
        paste("ExcludedIDs:", paste(ExcludedIDs(), collapse = ", "))
    })
    
    delay(1000, {
        output$out_1 <- renderText({ 
            "My"
        })
    })
    
    delay(2000, {
        output$out_2 <- renderText({ 
            "delayed"
        })
    })
    
    delay(3000, {
        output$out_3 <- renderText({ 
            "output"
        })
    })
}

enableBookmarking(store = "url") # store = "server"
shinyApp(ui, server)

更新：白名单方法

library(shiny)
library(shinyjs)

ui <- function(request) {
  fluidPage(
    useShinyjs(),
    br(),
    bookmarkButton(id="bookmarkBtn"),
    hr(),
    textOutput("ExcludedIDsOut"),
    hr(),
    sliderInput(inputId="slider", label="My value will be bookmarked", min=0, max=10, value=5),
    textOutput("out_1"),
    textOutput("out_2"),
    textOutput("out_3")
  )
}

server <- function(input, output, session) {
  
  bookmarkingWhitelist <- c("slider")
  
  observeEvent(input$bookmarkBtn, {
    session$doBookmark()
  })
  
  ExcludedIDs <- reactive({
    toExclude <- setdiff(names(input), bookmarkingWhitelist)
    setBookmarkExclude(toExclude)
    toExclude
  })
  
  output$ExcludedIDsOut <- renderText({ 
    paste("ExcludedIDs:", paste(ExcludedIDs(), collapse = ", "))
  })
  
  delay(1000, {
    output$out_1 <- renderText({ 
      "My"
    })
  })
  
  delay(2000, {
    output$out_2 <- renderText({ 
      "delayed"
    })
  })
  
  delay(3000, {
    output$out_3 <- renderText({ 
      "output"
    })
  })
}

enableBookmarking(store = "url") # store = "server"
shinyApp(ui, server)

这里是一个相关的GitHub问题，注意session$getBookmarkExclude()作为跟踪排除的输入的替代方法。